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IB SYSTEM

0051

X-ray Image Intensifier

Technical Manual Release 8 March 2006 (Rev. 7)

TECHNICAL MANUAL Revision history

Revision history Rev.

Date

Page/s

0

09.02.00

-

1

12.01.01

All

Modification description Document approval. Modification procedures for system adjustment in field. New monitor Nikal NF. Variac module installation instruction. General improvement of text and pictures. (Ref. RDM 5038, RDM 5041)

2

3

04.09.01

08.10.03

i, ii, iii, 20, 23, 47, 73, 93, 95, 97, 99, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112

I.I. 9”-12”-16” wiring and components plate unification. Toshiba I.I. 16” new model.

All

New procedure for adjusting the HV power supply. Change in adjustment/checks procedures. Spare Parts list update.

(Ref. RDM 5101, RDM 5218)

(Ref. RDM 5283, RDM 5432)

4

09.12.03

5

15.03.04

i, ii, iii, 10, 12, 13, New Philips I.I. 12" STD. 15, 16, 25, 28, 33, 34, New CCD camera N23. 35, 47, 48, 51, 52, (Ref. RDM 5686, RDM 5715) 54, 56, 57, from 59 to 63, from 65 to 124 All

New Power Supply board A1. New CCD camera N23 DRF (Dynamic Recursive Filter). (Ref. RDM 5763, RDM 5780)

6

06.04.04

from 10 to 13

Notify body change for CE mark. (Ref. RDM 5781)

7

08.03.06

All

New CCD camera N33 I.I. for APOLLO Remote Controlled Table Schematics and Drawings update Spare Parts update. (Ref. RDM 5893, RDM 5935, RDM 5972, RDM 6021)

(Rev. 7)

IB SYSTEM

TECHNICAL MANUAL Revision history

THIS PAGE IS INTENTIONALLY LEFT BLANK

IB SYSTEM

(Rev. 7)

TECHNICAL MANUAL Contents

Contents 1.

INTRODUCTION 1.1

2.

3.

Icons appearing in the manual ............................................................... 2

SAFETY ASPECTS

Risks associated with the installation, maintenance and use of the equipment .............................................................................. 4

2.2

Electromagnetic compatibility................................................................. 6

2.3

Electromagnetic environment ................................................................. 7

2.4

Environmental hazards and Disposal ..................................................... 8

2.5

Symbols used ......................................................................................... 9

IDENTIFICATION OF THE EQUIPMENT

Main label ........................................................................................... 11 Monitor label (standard version only) ................................................... 12 Image intensifier tube labels ................................................................ 13 CCU label (standard versions only)....................................................... 14 Variac module label (conventional generator versions only) ................... 14

TECHNICAL CHARACTERISTICS 4.1

15

Standard versions................................................................................. 15 4.1.1 4.1.2 4.1.3 4.1.4 4.1.5 4.1.6 4.1.7

4.2

10

Identification labels .............................................................................. 11 3.1.1 3.1.2 3.1.3 3.1.4 3.1.5

General characteristics ........................................................................ 15 Electrical characteristics...................................................................... 16 Image intensifier.................................................................................. 16 N23 TV chain ...................................................................................... 17 N33 TV chain ...................................................................................... 18 N23 TV chain Monitor.......................................................................... 19 N33 TV chain Monitor.......................................................................... 20

Digital Acquisition System versions ...................................................... 21 4.2.1 4.2.2 4.2.3

5.

3

2.1

3.1

4.

1

General characteristics ........................................................................ 21 Electrical characteristics...................................................................... 21 Image intensifier.................................................................................. 22

4.3

Environmental conditions (valid for all models)..................................... 23

4.4

Applicable standards ............................................................................ 24

ASSEMBLY 5.1

25

Installing the component plate.............................................................. 25 5.1.1 5.1.2

Remote-controlled tables ..................................................................... 25 Tilting tables ....................................................................................... 25

5.2

Assembling the I.I. on the radiological table.......................................... 26

5.3

Assembling the monitor ........................................................................ 27

(Rev. 7)

i

IB SYSTEM

TECHNICAL MANUAL Contents

6.

CONNECTING THE COMPONENT PLATE 6.1

Connection of the Power supply board A1 ............................................. 28 6.1.1 6.1.2

6.2

7.2

Connection to generators..................................................................... 38 Connection of VARIAC Module with I.I. system and with conventional generators........................................................................................... 40

Connecting the tables ........................................................................... 42 7.2.1 7.2.2 7.2.3 7.2.4 7.2.5

7.3

38

Connection of generators ...................................................................... 38 7.1.1 7.1.2

Connection with APOLLO remote controlled table................................. 42 Connection with MERCURY 332 remote controlled table ...................... 43 Connection with SYMPHONY remote controlled table ........................... 44 Connection with VISION tilting table.................................................... 45 Assembling and wiring the keypad for over-table serial changers (SAG 4 - SAG 6) on VIROMATIC ........................................................... 46

Connection with digital acquisition system (DIVA-D)............................. 48

FUNCTIONAL CHECKS

49

8.1

Description of the controls .................................................................... 49

8.2

Functional checks................................................................................. 51

8.3

Checking the image quality ................................................................... 52 8.3.1 8.3.2 8.3.3 8.3.4 8.3.5

9.

Interconnection table........................................................................... 36

CONNECTION OF ACCESSORIES 7.1

8.

Interconnection table........................................................................... 33

Connection of the interface board A2 for N33 TV chain ......................... 34 6.3.1

7.

Checking the output voltages............................................................... 29 Power supply board A1 interconnection ............................................... 30

Connection of the interface board A2 for N23 TV chain ......................... 32 6.2.1

6.3

28

Jumpers X10 and X11 setting on Power Supply board A1 .................... 52 Spatial resolution ................................................................................ 53 Grey scale (Leeds Test Object GS2) ...................................................... 54 Loss of contrast and noise (Leeds Test Object N3)................................. 55 Detail/contrast ratio (Leeds Test Object TO.10) .................................... 56

ADJUSTMENT

58

Camera adjustment ...................................................................................... 58 9.1.1 9.1.2 9.1.3 9.1.4 9.1.5

IB SYSTEM

Focal distance ..................................................................................... 60 Orientation and centering.................................................................... 61 Diaphragm and automatic kV adjustment............................................ 62 Adjusting the focus ............................................................................. 64 Cleanliness of the optics and output window and blemishes................. 65

ii

(Rev. 7)

TECHNICAL MANUAL Contents

9.2

Adjusting the CCU ................................................................................ 66 9.2.1 9.2.2 9.2.3 9.2.4 9.2.5 9.2.6

Uniformity (Shading or vignetting)........................................................ 68 Electronic circle (only for N23 TV chain) ............................................... 70 Automatic kV adjustment measurement circle...................................... 71 Black level........................................................................................... 72 White level........................................................................................... 73 Checking the auto black function......................................................... 75

10. MAGNETIC FIELD CORRECTION COIL POWER SUPPLY

76

11. ADJUSTING THE HV POWER SUPPLY OF THE I.I.

77

11.1 Adjustment for Toshiba 9” and 12” I.I. .................................................. 77 11.2 Adjustment for Philips 12” I.I................................................................ 79 11.3 Adjustment for Toshiba 16” I.I. ............................................................. 80

12. MAINTENANCE AND CLEANING

82

12.1 Scheduled maintenance........................................................................ 82 12.2 Special maintenance............................................................................. 83 12.3 Cleaning ............................................................................................... 84

13. SCHEMATICS AND DRAWINGS

85

14. SPARE PARTS

125

This publication can only be reproduced, transmitted, transcribed, or translated into any human or computer language with the written consent of VILLA SISTEMI MEDICALI S.p.a. This manual is the English translation of the Italian original manual version. (Rev. 7)

iii

IB SYSTEM

TECHNICAL MANUAL

THIS PAGE IS INTENTIONALLY LEFT BLANK

IB SYSTEM

(Rev. 7)

TECHNICAL MANUAL Introduction

1.

INTRODUCTION

G G

NOTE: The present manual is updated for the product it is sold with in order to grant an adequate reference in performing diagnostics and repair operation normally carried out by the service engineer. The manual may not reflect changes to the product not impacting service operations.

NOTE: The operating instructions are contained in the manuals of the equipment associated with the IB SYSTEM, because the IB SYSTEM itself does not incorporate any commands that can be used by the operator. A brief overview of the available commands is given in paragraph 8.1.

The Image Intensifier + TV Chain (i.e. IB SYSTEM) is an apparatus for conducting radiological examinations by fluoroscopy (or radioscopy). Fluoroscopy is a special radiological technique which provides a real-time view of the organs being examined, typically on a television monitor. Fluoroscopy utilises very low currents (from 0.1 to 5 mA) with prolonged exposure times (up to a few minutes). As a consequence, with fluoroscopy there is an image visible on the monitor for the entire duration of the X-ray exposure, thereby making it possible to view dynamic phenomena such as heart beats or catheter insertions. Through a feedback circuit based on the brightness of the image acquired by the camera, the system generates a control signal which, when connected to the generator, permits automatic adjustment of the kV as a function of the radio-opacity of the organ in question. This function can be disabled by means of a special control (situated on the radiological table console), to allow for manual kV adjustment in special cases. In a slightly different configuration, the Image Intensifier can also be used for digital examination procedures (also known as fluorography), in which the image acquired by the camera is transmitted to a computer for processing and storage. This technique makes it is possible to perform digital subtraction angiography, a method used for vascular examinations with contrast medium. Unlike fluoroscopy, the doses used are comparable to (though lower than) those of conventional radiography, that is to say the radiation is emitted in the form of brief high-current flashes. What’s more, the image resolution is much better because a 1024x1024 pixel matrix is used, rather than the 512x512 (or 576x576) of standard radioscopy.

(Rev. 7)

1

IB SYSTEM

TECHNICAL MANUAL Introduction

The equipment must be used according to the procedures set out in this manual, and must never be used for any purposes other than those specified in the manual. The equipment must be operated by qualified personnel with the necessary knowledge of radiation safety procedures. The user is responsible for compliance with the statutory regulations concerning the installation and operation of radiological systems. The manufacturer shall not be held responsible for any breakage, injuries or malfunctions resulting from improper use of the equipment, or from failure to perform the prescribed maintenance. The IB SYSTEM is a medical electrical device, and as such may only be used under the direct supervision of a doctor or highly qualified technician, with the necessary knowledge of radiation safety procedures. This manual is intended to provide authorised technicians with the instructions for correctly installing and servicing the equipment.

1.1

Icons appearing in the manual

G

THIS ICON INDICATE A NOTE; please read thoroughly the items marked by this picture.

THIS ICON INDICATE A WARNING; the items marked by this icon refer to the safety aspects of the patient and/or of the operator.

IB SYSTEM

2

(Rev. 7)

TECHNICAL MANUAL Safety aspects

2.

SAFETY ASPECTS The I.I. (Image Intensifier) essentially consists of a glass vacuum tube (similar to the tube of a television set) protected against mechanical damage by a metal enclosure designated the envelope. The larger-diameter face is designated as the entrance window and is protected by a thin (0.5 mm) aluminium sheet. The entrance window is protected for transport with a plastic plate secured by 4 nylon screws. This plate should be removed only when the unit is installed on the radiological table, as instructed in paragraph 5.2. The smaller-diameter face at the rear is designated the output surface. At the centre of the output surface is the output window, a round glass area 25-30mm in diameter and yellow/green in colour. The camera is installed on the output window. If the camera needs to be removed for maintenance, proceed as described in paragraph 9.1 taking care not to soil or damage the output window. On the side of the I.I. there is a square enclosure which houses the HV (high voltage) power supply. This power supply receives a 24Vdc input and generates the working voltages for the I.I. which are in the order of 30kV.

G

(Rev. 7)

NOTE: Installation of the IB SYSTEM an a VSM radiological remote or tilting table has been designed in such a way to grant maximum protection against X-ray radiation. Manuals of the radiological tables indicate areas of exposure and typical doses delivered in those areas during operation.

3

IB SYSTEM

TECHNICAL MANUAL Safety aspects

2.1

Risks associated with the installation, maintenance and use of the equipment

WARNING: When handling the I.I., always be aware of the following risks: • Implosion risks: if dropped or subjected to excessive stress, the I.I. tube may break, ejecting potentially toxic gases, dust and pieces of glass. The entrance window and the output window are particularly vulnerable areas which must therefore be handled with great care. • High voltages: the HV power supply board includes voltages as high as 30kV (30,000 Volts). Do not touch any part of the power supply with bare hands or with metal objects to avoid the risk of electrical shock. Note that these voltages persist for a few dozen seconds after the power supply has been disconnected. There are no power on indicators on the I.I. or on the HV power supply board. Therefore, before attempting any operations on the I.I., always make sure that the power cable has been physically disconnected. The above considerations also apply to the monitor. In this case, the delicate part is the tube. Some parts with dangerous voltages are accessible through the rear cover plate, which must be removed for connecting the cables. • X Rays: certain maintenance operations require the performance of an X-ray exposure. Although the I.I. envelope is sufficiently shielded with lead, the service technician must in any case take every precaution to minimise his exposure to radiation.

A malfunction of the automatic kV control circuit, with excessive or insufficient kV output for the organ being examined, will result in a displayed image that is either too bright or too dark. This type of fault is readily detectable by the operator. VILLA SISTEMI MEDICALI has designed and constructed the equipment to comply with all the safety requirements; the company also supplies all the necessary information for the correct use of the equipment, and the hazard warnings pertaining to X-ray generators. Villa Sistemi Medicali shall not be held responsible for: • use of the IB SYSTEM apparatus for purposes other than the intended purposes described in this manual • damage to the equipment, operator or patient resulting from incorrect installation or failure to service the equipment as instructed in the accompanying manuals, or resulting from improper use of the equipment • damage resulting from mechanical and/or electrical modifications made either during installation or subsequently, and which differ from the settings described in the service manual.

IB SYSTEM

4

(Rev. 7)

TECHNICAL MANUAL Safety aspects

The equipment must be serviced exclusively by personnel authorised by Villa Sistemi Medicali. Only authorised personnel may remove the covers and/or access energised electrical components. The equipment is not suitable for use in the presence of vapours, anaesthetic mixtures flammable in air, oxygen, or nitrous oxide. Do not spill water or other fluids inside the equipment to avoid causing short circuits and corrosion. Before cleaning the equipment, always disconnect it from the electricity mains. The equipment must be installed well away from sources of heat. In particular, before normal operation, check that the monitor is not positioned near heat sources and that the ventilation openings are not obstructed by foreign objects, as this may result in a harmful increase of the internal temperature. During normal operation, position the monitor so as to avoid accidental knocks against surrounding equipment and/or accessories. When performing radiological examinations, no persons other than the patient and the operator should be present in the room; make use of the radiation protection facilities present in the radiographic room.

(Rev. 7)

5

IB SYSTEM

TECHNICAL MANUAL Safety aspects

2.2

Electromagnetic compatibility Although the equipment has been designed to meet EN60601-1-2, it must be installed at a certain minimum distance from transformer rooms, S.C.R. uninterruptible power supplies and amateur radio or cellular telephone transceivers. Any professional instruments or devices positioned near the equipment must conform to the Electromagnetic Compatibility regulations. Non conforming instruments known to have poor immunity to electromagnetic fields must be installed at least 3 m away from the IB SYSTEM and must be powered through a dedicated electricity line. The IB SYSTEM must be kept turned off when high frequency surgical devices or similar devices are in use.

IB SYSTEM

6

(Rev. 7)

TECHNICAL MANUAL Safety aspects

2.3

Electromagnetic environment The equipment is suitable for use in the following electromagnetic environments: Electromagnetic emissions

Compliance

EMC environment requirements

Class A

IB SYSTEM can be connected to a line other than for domestic appliance.

Group I

IB SYSTEM generates radio frequency energy only internally. R.F. energy generated does not cause interference with electrical appliances used in its vicinity

Harmonic emission EN 61000-3-2

Compliant

IB SYSTEM can be connected to a line other than for domestic appliance.

Voltage spikes/flicker emission EN 61000-3-3

Compliant

IB SYSTEM can be connected to a line other than for domestic appliance.

Susceptibility EN 60601-1-2 (EN 61000-4-2 /3 /4 /5 /6 /8 /11)

Compliant

IB SYSTEM can be connected to a line other than for domestic appliance.

Radiated and conducted emissions CISPR 11

Recommended distances from electromagnetic emission sources:

(Rev. 7)

Power of the R.F. source

Distance (m)

10mW

0.3

100mW

1

1W

3

10W

8

100W

30

7

IB SYSTEM

TECHNICAL MANUAL Safety aspects

2.4

Environmental hazards and Disposal The equipment contains materials which, at the end of its life cycle, must be disposed of at the collection centres designated by the Local Health Units. In particular, the equipment contains the following materials and/or components: • control and power supply unit: iron, copper, fibreglass, electrolyte, non biodegradable plastic material, rubber • monitor: iron, copper, fibreglass, glass, non biodegradable plastic material • image intensifier and camera: iron, lead, aluminium, copper, non biodegradable plastic material, fibreglass, glass, phosphorus compounds

WARNING: IMPLOSION HAZARD If dropped or subjected to excessive stress, the I.I. tube and the monitor tube may break, expelling potentially toxic gases, dust and pieces of glass. The entrance window and the output window are particularly vulnerable areas and must therefore be handled with the utmost care.

IB SYSTEM

8

(Rev. 7)

TECHNICAL MANUAL Safety aspects

2.5

Symbols used Symbol

Description Equipment with Type B applied parts The equipment contains materials which, at the end of its life cycle, must be disposed of at the collection centres designated by the Local Health Units

∼ N L

Alternating current Neutral conductor connection node Live conductor connection node Protective ground Functional ground OFF ; equipment disconnected from the electricity mains



ON ; equipment connected to the electricity mains Refer the enclosed documentation

Warning: dangerous voltage Conformity to the CE 93/42 Directive Select large I.I. field Select medium I.I. field Select small I.I. field Select manual kV operating mode Vertical image inversion Horizontal image inversion

(Rev. 7)

9

IB SYSTEM

TECHNICAL MANUAL Identification of the equipment

3.

IDENTIFICATION OF THE EQUIPMENT The IB SYSTEM is available different models. The standard versions can have 9”, 12” standard I.I.s or 9”, 12” high resolution I.I.s and can be coupled with conventional or HF generators. The Digital Acquisition System versions can have 9”, 12” or 16” high resolution I.I.s and must be coupled with HF generators. The equipment consists of the following components: • image intensifier • CCD camera with last image hold (except for digital versions) • 17”/21” monitor (except for digital versions) • component plate complete with I.I. power supply, generator interface, TV CCU control unit for standard versions • component plate complete with I.I. power supply and Digital Acquisition System interface support, for Digital Acquisition System versions.

IB SYSTEM

10

(Rev. 7)

TECHNICAL MANUAL Identification of the equipment

3.1

Identification labels

3.1.1

Main label Is affixed to the component plate and fully identifies the equipment.

Component plate with CCU N23

Component plate with CCU N33

Component plate for Digital System

(Rev. 7)

11

IB SYSTEM

TECHNICAL MANUAL Identification of the equipment

3.1.2

Monitor label (standard version only) Are affixed to the rear panel of the monitor. Both the manufacturer label and the Villa Sistemi Medicali label are present. The latter identifies the monitor as a part of the IB SYSTEM. The code and serial numbers on this label therefore coincide with those on the main label.

Code: NFYYXXXXX Line : 220-240V ∼ 80W Serial Number: XX.XXX

Made in Italy Type: B&W Monitor DF1 50/60Hz Date: MM/YY

NICAL SPA via Soffredini, 43 20126 MILANO - ITALY

Complies with FDA radiation performance standard, 21 CFR. SUBCHAPTER J.

FDA NUMBER: 9010197 -00 Serial Number: XX.XXX

Manufacturer label

IB SYSTEM

Villa Sistemi Medicali label

12

(Rev. 7)

TECHNICAL MANUAL Identification of the equipment

3.1.3

Image intensifier tube labels Are affixed to the side panel of the I.I.. Both the manufacturer label, and the Villa Sistemi Medicali labels are present. The latter identifies the I.I. tube as part of the IB SYSTEM. The code and serial number on this label therefore match those on the main label.

Manufacturer label

Villa Sistemi Medicali label

Manufacturer label

Villa Sistemi Medicali label

(Rev. 7)

13

IB SYSTEM

TECHNICAL MANUAL Identification of the equipment

3.1.4

CCU label (standard versions only) This is the original manufacturer label affixed to the CCU (Camera Control Unit).

Code: N23XXXXX Line : 24V DC 20W Serial Number: XX.XXX

Made in Italy Type: N23 CCD MANUFACTURER: NICAL SPA Date: MM/YY

NICAL SPA via Soffredini, 43 20126 MILANO - ITALY

3.1.5

0123

Variac module label (conventional generator versions only) Is affixed to the variac board installed on conventional generator models.

IB SYSTEM

14

(Rev. 7)

TECHNICAL MANUAL Technical characteristics

4.

TECHNICAL CHARACTERISTICS

4.1

Standard versions

4.1.1

General characteristics

Description

Data

Manufacturer

Villa Sistemi Medicali S.p.a. Via della Azalee, 3 20090 – Buccinasco – MI – Italia

Installation

under-table (remote-controlled tables) over-table (tilting tables)

Table compatibility

Apollo, Mercury, Symphony, Vision, Viromatic

Generator typical configuration (*)

High frequency generators: Genius HF-A / G 100 RF/A Genius conventional generators

Available commands

• • • •

Position of controls

• on remote console (Apollo, Mercury, Symphony) • on serial changer keyboard (Vision) • on dedicated keypad on board the serial changer (Viromatic)

Monitor controls

• brightness • contrast

select manual/automatic kV adjustment up/down image inversion left/right image inversion select I.I. field (zoom)

(*) Other generator models may be compatible, but it is left to the installer to assess compatibility on the bases of the information contained in this manual and in the radiological table manual.

(Rev. 7)

15

IB SYSTEM

TECHNICAL MANUAL Technical characteristics

4.1.2

Electrical characteristics

Description

Data

Power supply

220/230/240Vac ±10% mono-phase

Frequency

50/60Hz

Current

0.5A

Power

120VA

Isolation class

Class I with type B applied parts (IEC 601-1)

Type of installation

Permanent installation

4.1.3

Image intensifier

Description

9" Format

Model

Toshiba E5764SD

Toshiba E5765SD

Philips 9896 010 50601

Nominal input diameter

9” (23cm)

12” (30cm)

12” (31cm)

Yes

Yes

Yes

3

3

3

20mm

25mm

25mm

Caesium iodide (CsI), high resolution

Caesium iodide (CsI), high resolution

Caesium iodide (CsI)

P20

P20

P20

Resolution (at centre) lp/cm

48/56/66

44/50/56

40/48/56

Contrast ratio on large area (10%)

25:1

24:1

33:1

Contrast ratio on detail (10mm)

16:1

14:1

14:1

Detective Quantum Efficiency (DQE)

65%

65%

65%

Conversion factor cd·m-2/mR·s-1

240

250

300

Weight

19kg

29kg

32kg

Zoom Number of fields Output image diameter Input phosphor

Output phosphor

IB SYSTEM

16

12" Format

(Rev. 7)

TECHNICAL MANUAL Technical characteristics

4.1.4

N23 TV chain

Description

Data

Model

Nical N23 50 NH 0A (625 lines 50Hz) Nical N23 50 NH 3A (625 lines 100Hz)

Type of camera

Solid state CCD ½” low persistence

Acquisition matrix

582x752 pixel, 10 bit

Scanning system

CCIR 625 lines 50Hz

Aspect ratio

4:3

Bandwidth

20MHz ± 3dB

Electronic circle

Internal generator

Antivignetting circuit

I.I. brightness distortion compensation: up/down, left/right, vertical/horizontal parabola

Video gain

Automatic control

Automatic kV/mA adjustment

Standard

Last image hold

Standard

Recursive digital filter for image Variable weighting k=2, 4, 8, 16 noise reduction DRF (Dynamic Recursive Filter) function

Dynamic filter for noise reduction which optimises image quality both statically and for moving images. Activated by default.

Image inversion

Vertical and horizontal

Automatic kV/mA adjustment

Support for automatic generator (high frequency or conventional) brightness adjustment (ABC). The function can be disabled by the operator.

(Rev. 7)

17

IB SYSTEM

TECHNICAL MANUAL Technical characteristics

4.1.5

N33 TV chain

Description

Data

Model

Nical N23

Type of camera

Solid state CCD ½” high resolution

Acquisition matrix

1024x1024 pixel, 12 bit

Scanning system

Progressive scanning

Aspect ratio

1:1

Bandwidth

40MHz ± 3dB

Electronic circle

Internal generator

Antivignetting circuit

I.I. brightness distortion compensation: up/down, left/right, vertical/horizontal parabola

Video gain

Automatic control

Automatic kV/mA adjustment

Standard

Last image hold

Standard

Recursive digital filter for image Variable weighting k=2, 4, 8, 16 noise reduction DRF (Dynamic Recursive Filter) function

Dynamic filter for noise reduction which optimises image quality both statically and for moving images. Activated by default.

Image inversion

Vertical and horizontal

Automatic kV/mA adjustment

Support for automatic generator (high frequency or conventional) brightness adjustment (ABC). The function can be disabled by the operator.

IB SYSTEM

18

(Rev. 7)

TECHNICAL MANUAL Technical characteristics

4.1.6

N23 TV chain Monitor

Description

Data

Model

Nical Nical Nical Nical

Dimensions

17” (414mm) 21” (511mm)

Scanning

625 lines, 50Hz standard 625 lines, 100Hz optional

Bandwidth

40MHz for 50Hz version 40MHz for 100Hz version

Vertical/horizontal linearity error

< 1.5%

Brightness and contrast adjustment

Remote controlled table: - with keys on the monitor front panel - controlled through keys on the table console - automatic adjustment of the brightness, depending on the ambient light. Tilting table: - with keys on the monitor front panel - automatic adjustment of the brightness, depending on the ambient light.

Dimensions

17”: 405x359x350mm (LxHxP) 21”: 489x418x380mm (LxHxP)

Weight

17”: 17,5kg (excluding trolley) 21”: 21,8kg (excluding trolley)

Monitor trolley

height: adjustable 900-1300 mm adjustable monitor angle transport wheels with parking brake

(Rev. 7)

NF17 NF17 NF21 NF21

19

F6 F2 F6 F2

AAB AAB AAB AAB

(625 (625 (625 (625

lines lines lines lines

50Hz) 100Hz) 50Hz) 100Hz)

IB SYSTEM

TECHNICAL MANUAL Technical characteristics

4.1.7

N33 TV chain Monitor

Description

Data

Model

Nical NF17 F2 BAA Nical NF21 F2 BAA

Dimensions

17” (414mm) 21” (511mm)

Scanning

Progressive

Bandwidth

40MHz

Vertical/horizontal linearity error

< 1.5%

Brightness and contrast adjustment

Remote controlled table: - with keys on the monitor front panel - controlled through keys on the table console - automatic adjustment of the brightness, depending on the ambient light. Tilting table: - with keys on the monitor front panel - automatic adjustment of the brightness, depending on the ambient light.

Dimensions

17”: 405x359x350mm (LxHxP) 21”: 489x418x380mm (LxHxP)

Weight

17”: 17,5kg (excluding trolley) 21”: 21,8kg (excluding trolley)

Monitor trolley

height: adjustable 900-1300 mm adjustable monitor angle transport wheels with parking brake

IB SYSTEM

20

(Rev. 7)

TECHNICAL MANUAL Technical characteristics

4.2

Digital Acquisition System versions

4.2.1

General characteristics

Description

Data

Manufacturer

Villa Sistemi Medicali S.p.a. Via della Azalee, 3 20090 – Buccinasco – MI – Italia

Installation

under-table (remote controlled tables) table-top (tilting tables)

Table compatibility

Apollo, Mercury, Symphony, Vision

Generator compatibility

Genius HF-A and G100RF-A high rrequency generators

Image acquisition system compatibility

Support for interfacing with digital radiographic image acquisition system

Camera compatibility

Supports interfacing with CCD camera for Digital Acquisition System

4.2.2

Electrical characteristics

Description

Data

Power supply

220/230/240Vac ±10% mono-phase

Frequency

50/60Hz

Current

0.15A

Power

30VA

Isolation class

Class I with type B applied parts (IEC 601-1)

Type of installation

Permanent installation

(Rev. 7)

21

IB SYSTEM

TECHNICAL MANUAL Technical characteristics

4.2.3

Image intensifier

Description

9” Format

12” Format

16” Format

Toshiba E5830SD

Toshiba E5796SD

Toshiba E5876SD

9” (23cm)

12” (30cm)

16” (40cm)

Yes

Yes

Yes

3

3

4

25mm

25mm

30mm

Caesium iodide (CsI), high resolution

Caesium iodide (CsI), high resolution

Caesium iodide (CsI), high resolution

P20

P20

P20

Toshiba 52/56/68

46/50/56

Toshiba 40/46/50/60

Contrast ratio on large area (10%)

30:1

30:1

Toshiba 30:1

Contrast ratio on detail (10mm)

Toshiba 22:1

18:1

Toshiba 20:1

Detective Quantum Efficiency (DQE)

65%

65%

Toshiba 65%

Conversion factor cd·m-2/mR·s-1

250

300

400

Weight

20kg

28kg

41kg

Model Nominal input diameter Zoom Number of fields Output image diameter Input phosphor

Output phosphor Resolution (at centre)lp/cm

IB SYSTEM

22

(Rev. 7)

TECHNICAL MANUAL Technical characteristics

4.3

Environmental conditions (valid for all models)

Description

Data

Operating temperature

From +10°C a +35°C

Storage temperature

From –15°C a +45°C

Relative humidity for operation and storage

From 10% to 80% RH non-condensing

Atmospheric pressure for operation and storage

From 630hPa a 1060hPa

Protection class IEC 529

IP X0

(Rev. 7)

23

IB SYSTEM

TECHNICAL MANUAL Technical characteristics

4.4

Applicable standards • •

EN 1441 EN 60601-1

•

EN 60601-1-2 Medical electrical equipment: general requirements for safety 2: Collateral standard: Electromagnetic compatibility EN 60601-1-3 Medical electrical equipment. Part 1: general requirements for safety. 3: Collateral standard: General requirements for radiation protection in diagnostic X-ray equipment

•

IB SYSTEM

Medical devices - Risk analysis Medical electrical equipment: general requirements for safety (including Amendments A1+A11+A12, A2, A13)

•

DIN/EN 60065 Safety Requirements for Mains Operated Electronic and Related Apparatus for Household and Similar General Use

•

EN 61262-1

Medical electrical equipment – Characteristics of Electro-Optical X-ray Image Intensifiers. Part 1: Determination of the Entrance Field Size

•

EN 61262-2

Medical electrical equipment – Characteristics of Electro-Optical X-ray Image Intensifiers. Part 2: Determination of the Conversion Factor

•

EN 61262-3

Medical electrical equipment – Characteristics of Electro-Optical X-ray Image Intensifiers. Part 3: Determination of the Brightness Distribution and Brightness Non-uniformity

•

EN 61262-4

Medical electrical equipment – Characteristics of Electro-Optical X-ray Image Intensifiers. Part 4: Determination of the Image Distortion

•

EN 61262-5

Medical electrical equipment – Characteristics of Electro-Optical X-ray Image Intensifiers. Part 5: Determination of the Detective Quantum Efficiency

•

EN 61262-6

Medical electrical equipment – Characteristics of Electro-Optical X-ray Image Intensifiers. Part 6: Determination of the Contrast Ratio and the Veiling Glare Index

•

EN 61262-7

Medical electrical equipment – Characteristics of Electro-Optical X-ray Image Intensifiers. Part 7: Determination of the Modulation Transfer Function.

•

21 CFR

Code of Federal regulation USA (I.I. and monitors)

24

(Rev. 7)

TECHNICAL MANUAL Assembly

5.

ASSEMBLY

5.1

Installing the component plate

5.1.1

Remote-controlled tables The component plate is installed inside the remote-controlled table cabinet. Fix the plate to the left guide of the cabinet using the two M8 screws. The plate must be mounted with the component side toward the inside of the cabinet.

5.1.2

Tilting tables Fix the special cover on the component plate using the four M4 screws. The plate can be positioned on top of the generator cabinet or on the floor next to it. Alternatively, it can be wall mounted using the two eyebolts. When positioning the plate, make sure that the ventilation holes are not obstructed. In case the unit will be installed with a conventional generator, the plate will be 2: one for the management of the TV chain and the Monitor, the second for the command of the kV and automatic mA (Variac module).

(Rev. 7)

25

IB SYSTEM

TECHNICAL MANUAL Assembly

5.2

Assembling the I.I. on the radiological table The I.I. is supplied with the camera already assembled and with the cables already connected. The orientation of the I.I. is different for assembly on remote-controlled (under-table assembly) or tilting (table-top assembly) tables. 1. Remove the plastic guard from the entrance window 2. Secure the fixing plate to the I.I. input flange using ALL the screws. Be careful with the length of the screws, because excessively long screws may damage the I.I. 3. Install the I.I. on the radiological table, orienting it as follows: • remote controlled table (Apollo): orient the tube and HV power supply toward the BACK END of the table • remote controlled table (Mercury and Symphony): orient the tube and HV power supply toward the FOOT END of the table • tilting table (Vision and Viromatic): orient the tube and HV power supply toward the BACK END of the table If the image is vertically or horizontally (mirror) inverted, the orientation can be modified as follows: • Apollo, Mercury, Symphony and Vision: set the inversion value in the corresponding software fields. Consult the service manual of the radiological table for details • Viromatic: modify the keypad connections by moving the wire from contact 4 to contact 2 on buttons S2 (horizontal) and/or S3 (vertical). See also drawing #14 of chapter 13 (code 39169015). 4. Position the connecting cables, running them inside the table to reach the component board 5. Plug connector X2 (9 pin D-connector) into connector X2 of the table-generator interface A2 6. Plug connector X3 (5 pin connector) into connector X3 on power supply board A1 7. Connect the ground cable to the ground bolt.

IB SYSTEM

26

(Rev. 7)

TECHNICAL MANUAL Assembly

5.3

Assembling the monitor 1. Carefully remove the monitor from its packing 2. Assemble the monitor on the trolley and fix it with the 4 M5 screws 3. Remove the cover plate from the rear panel of the monitor 4. Remove the cable fixing bracket 5. Secure the tube with the special cable clamp 6. Connect the coaxial cable to one of the two BNC sockets 7. Connect the 75 ohm BNC termination plug to the other BNC 8. Connect the power supply cable 9. Connect the remote control cable (remote-controlled version only) 10. Reassemble the cover plate 11. Connect the ground cable to one of the two screws on the cover plate

G

NOTE: In the case the I.I. is used on tilting tables Viromatic or Vision, the remote control cable has not to be connected inside the monitor.

12. Position the connecting cables, running the corrugated tube up to the component board 13. Connect the BNC cable to connector X5 on the TV CCU controller A3 14. Connect the live and neutral conductors of the power supply cable to terminal block X1 of power supply board A1. Connect the ground conductor to the main ground bolt 15. Connect the conductors of the remote control cable to terminal block X4 of table-generator interface board A2

G

Colour

Terminal on board A2

Green

X4.1

Yellow

X4.2

Brown

X4.3

Black (screen)

X4.4

NOTE: When N33 TV chain is present the brightness and contrast remote control for in room monitor connection must be realised directly to table general terminal board (X0).

For further details, refer to the annexed electrical diagrams.

(Rev. 7)

27

IB SYSTEM

TECHNICAL MANUAL Assembly

6.

CONNECTING THE COMPONENT PLATE

6.1

Connection of the Power supply board A1

Figure 6-1: Power supply board A1

G

NOTE: The jumpers X12, X13, X14, X15, X16, X17, X18 are set in position 1-2 (TH) when a Thomson or Toshiba I.I. is installed in the system. The jumpers X12, X13, X14, X15, X16, X17, X18 are set in position 2-3 (PH) when a Philips I.I. is installed in the system. The jumpers X12, X13, X14, X15, X16, X17, X18 are factory adjusted.

The power supply for the IB SYSTEM is generally taken from the radiological table and must be brought to terminal block X0 as follows: Terminal

Connection

X0.1

Live

X0.2

Neutral

X0.3

Functional ground

The protective ground must be connected from the ground bolt on the component plate to the main ground node on the remote controlled or tilting table.

IB SYSTEM

28

(Rev. 7)

TECHNICAL MANUAL Assembly

Ground terminal X0.3 is a functional ground node, not a safety ground, and must be connected to the ground bolt on the plate or, in the case of a three-core power supply cable, directly to the ground conductor of the cable. In the case of direct supply from the electricity mains, it is essential to protect the equipment with a 250Vac, 4A automatic circuit breaker. Switch S1 on circuit board A1 is for utility functions only, and should always be in the “ON” position during normal operation. The protective ground connection must be made on the ground bolt situated on the component board and identified by the

symbol.

Connect the bolt to the ground bar of the radiological table using a yellow/green conductor with a minimum cross section of 4 mm2.

WARNING: The equipment is factory set to operate with a mains voltage of 230Vac. Before suppling the system check the mains voltage. If it is different from the voltage set, it can be adapted by changing the connection of transformer T1 on the component plate:

6.1.1

Mains voltage

T1 primary

T1 secondary

220 Vac

220

26

230 Vac

230

26

240 Vac

230

24

Checking the output voltages To check the power supply voltage to the I.I. and the CCU, disconnect the terminals X3 and X6 and measure the voltage without load. On both X3, pin 4 (positive) and pin 5 (negative), and X6, pin 1 (positive) and pin 2 (negative), the voltage read must be 24Vdc ± 0.2V for N23 TV chain and 26Vdc± 0.2V for N33 TV chain. If necessary, adjust these voltages by acting on trimmer R8 for the output voltage of connector X3 (I.I. power supply) and on trimmer R10 for the output voltage of connector X6 (CCU power supply).

(Rev. 7)

29

IB SYSTEM

TECHNICAL MANUAL Assembly

6.1.2

Power supply board A1 interconnection The connections to the A1 board are carried out through the following terminal blocks: Connect to

Characteristics

X0.1

Power supply input: Live

Radiological table

230Vac 0.5A

X0.2

Power supply input: Neutral

Radiological table

230Vac 0.5A

X0.3

Power supply input: Ground

Ground bolt

X1.1

Monitor power supply output: Live

Monitor

230Vac 0.5A max

X1.2

Monitor power supply output: Neutral

Monitor

230Vac 0.5A max

X2.1

Auxiliary power supply output: Live Not used

230Vac 0.5A max

X2.2

Auxiliary power supply output: Neutral

Not used

230Vac 0.5A max

X3.1

Select Zoom 1 to I.I. (see Note)

I.I.

Active at 24Vdc

X3.2

Select Zoom 2 to I.I. (see Note)

I.I.

Active at 24Vdc

X3.3

Select Zoom 3 to I.I. (see Note)

I.I.

Active at 24Vdc

X3.4

I.I. power supply (+24Vdc)

I.I.

24Vdc 0.5A max

X3.5

I.I. power supply (0Vdc)

I.I.

0V

X4.1

Select Zoom 1 from table (see Note)

Radiological table

Active at 24Vdc or 0Vdc

X4.2

Select Zoom 2 from table (see Note)

Radiological table

Active at 24Vdc or 0Vdc

X4.3

Select Zoom 3 from table (see Note)

Radiological table

Active at 24Vdc or 0Vdc

X4.4

Common zoom I.I. (+24Vdc or 0Vdc) (see Note)

Radiological table

24Vdc or 0Vdc

X5.1

I.I. field analogic signal for Digital Digital Acquisition Voltages on 1 kOhm Acquisition System System load: no zoom: 0Vdc Zoom 1: 3.6Vdc Zoom 2: 6.5Vdc Zoom 3: 11.4Vdc

X5.2

I.I. field analogic signal for Digital Acquisition System (0Vdc)

Digital Acquisition Common 0Vdc System

N23

Description

X6.1

CCU power supply (+24Vdc)

Board A2, X1.1

24Vdc max 0.8A

X6.2

CCU power supply (0Vdc)

Board A2, X1.2

0V

N33

Contact

X6.1

CCU power supply (+26Vdc)

Board A2, X3.1

26Vdc max 0.8A

X6.2

CCU power supply (0Vdc)

Board A2, X3.2

0V

IB SYSTEM

30

(Rev. 7)

TECHNICAL MANUAL Assembly

Contact

Description

Connect to

Characteristics

X7.1

Power supply to magnetic field compensation coil board

Coil board

26Vac 0.2A max

X7.2

Power supply to magnetic field compensation coil board

Coil board

26Vac 0.2A max

X8.1

Transformer primary power supply

T1, 230V

230V 0.5A

X8.2

Transformer primary power supply

T1, 0V

230V 0.5A

X9.1

Transformer secondary power supply Transformer secondary power supply

T1, 0V

26V 2A

T1, 26V

26V 2A

X9.2

G

NOTE: The functioning principle of the I.I. zoom signals is the following: If none of ZOOM 1, ZOOM 2, ZOOM 3 signal is active (at +24Vdc or 0Vdc in according with the Image Intensifier in use), the bigger field is set in the I.I.. If ZOOM 1 is active, the first zoom is active, and so on (e.g. for a 12" I.I., signal ZOOM 1 selects the 9" field and signal ZOOM 2 selects the 6" field). Signal ZOOM 3 is used only for the 4 field I.I.'s. The following table shown the possible setting of the outputs on the connector X4.1, X4.2, X4.3 in according with the settings of the X12, X13, X14, X15, X16, X17, X18 jumpers on the power supply board A1.

(Rev. 7)

Jumper

Position 1-2 (Thomson/Toshiba)

Position 2-3 (Philips)

X12

ON

--

X13

ON

--

X14

ON

--

X15

ON

--

X16

ON

--

X17

ON

--

X18

ON

--

X12

--

ON

X13

--

ON

X14

--

ON

X15

--

ON

X16

--

ON

X17

--

ON

X18

--

ON

31

PCB A1 Connector X4

X4.1 = Active at 24Vdc X4.2 = Active at 24Vdc X4.3 = Active at 24Vdc X4.4 = 24Vdc

X4.1 = Active at 0Vdc X4.2 = Active at 0Vdc X4.3 = Active at 0Vdc X4.4 = 0Vdc

IB SYSTEM

TECHNICAL MANUAL Assembly

6.2

Connection of the interface board A2 for N23 TV chain

Figure 6-2: Table-generator interface board - A2 The interface board A2 is used to connect the IB SYSTEM to the accessories (table and generator) that are part of the radiological system. The commands of the TV chain (CCU) are managed through this board and some functions can be set through jumpers. The functions controlled by the different jumpers are listed in the following table: Jumper

Pos.

X7

X16

X7

x8

X7

x4

X7

x0

X7

DRF

X7 X8

IB SYSTEM

Description Recursive filter with weighting 16 Recursive filter with weighting 8 Recursive filter with weighting 4 Recursive filter with weighting 0 Dynamic Recursive Filter

Agc_off Disable the automatic gain control All Spare functions

32

Default setting

Note

OFF OFF OFF

If none of these jumpers is closed, the filter is enabled with weighting 2

OFF OFF

OFF OFF

OFF: Dynamic Recursive filter ON: Standard Recursive filter DO NOT CLOSE NOT ACTIVE

(Rev. 7)

TECHNICAL MANUAL Assembly

6.2.1

Interconnection table The connections of the A2 board are carried out through the following terminal blocks:

Contact

Description

Connect to

X1.1 X1.2

Power supply (+24Vdc) Power supply (0Vdc)

Board A1, X6.1 Board A1, X6.2

X2.1

Common 0Vdc (see Note)

Generator Generator

X2.2 X2.3 X2.4

Automatic kV analogue OUT (see Note) Fluoro call OUT (see Note) Auto/man kV selection OUT (see Note)

Characteristics 24Vdc max 0.8A 0V

0-12Vdc. Setpoint at 6.5Vdc Active at 0Vdc Active at 0Vdc for manual kV

Generator Generator

X3.1

Man/auto kV select IN

Radiological table

Active at 0Vdc for manual kV

X3.2 X3.3 X3.4 X3.5 X3.6 X3.7 X3.8

Common 0Vdc Fluoro request IN

Radiological Radiological Radiological Radiological Radiological Radiological Radiological

Active at Active at Active at Trimmer Trimmer

X4.1 X4.2 X4.3

Monitor controls common (see Note) Monitor brightness OUT (see Note) Monitor contrast OUT (see Note) Monitor screen control cable (see Note)

Monitor Monitor Monitor

Variac board interface signals

Variac board

See electrical diagram

CCU

See electrical diagram

X4.4 X5.1…6

Horizontal inversion IN Vertical inversion IN Brightness IN Contrast IN Screen

X6.1…25 CCU interface signals

G

(Rev. 7)

table table table table table table table

0Vdc 0Vdc 0Vdc 470k 4k7

Monitor

NOTE: Connections on connectors X2 and X4 must be made using shielded cable.

33

IB SYSTEM

TECHNICAL MANUAL Assembly

6.3

Connection of the interface board A2 for N33 TV chain

Figure 6-3: Table-generator interface board - A2 The interface board A2 is used to connect the IB SYSTEM to the accessories (table and generator) that are part of the radiological system. The commands of the TV chain (CCU) are managed through this board and some functions can be set through jumpers and dip-switches. The functions controlled by the different jumpers and dip-switches are listed in the following table: Default setting

Jumper

Pos.

Description

X5

A

Analogic V ref. for fluoro kV/mA to generator with positive signal

ON

X5

B

Analogic V ref. for fluoro kV/mA to generator with negative signal

OFF

IB SYSTEM

34

Note For Genius and G100 generators set “Reverse analog input”

(Rev. 7)

TECHNICAL MANUAL Assembly

Default setting

Dip-sw

Pos.

S1

1

“Neutral Density” filter enable (Optional)

ON

S1

2

Automatic white level

ON

S1

3

OFF

S1

4

Video signal area control for fluoro kV auto adjustment (R.O.I.) Recursive filter x0

S1

5

Recursive filter x4

OFF

S1

6

Recursive filter x8

OFF

S1

7

Recursive filter x16

OFF

S1

8

Dynamic recursive filter (D.R.F.)

OFF

(Rev. 7)

Description

35

OFF

Note Standard configuration: “N.D.” not present or disable Standard configuration: Auto white level enable Standard configuration: large area Standard configuration: recursive filter x2 Standard configuration: recursive filter x2 Standard configuration: recursive filter x2 Standard configuration: recursive filter x2 Standard configuration: dynamic recursive filter enable

IB SYSTEM

TECHNICAL MANUAL Assembly

6.3.1

Interconnection table The connections of the A2 board are carried out through the following terminal blocks:

Contact X1.1 … 25

Description

Connect to

Characteristics

CCU N33 signal connection

CCU TV chain – X1 connector

Flat cable

Generator (with shielded cable)

0-12Vdc. Set-point at 6.5Vdc

X2.2

OUT V ref. for fluoro auto kV with positive or negative signal depending by jumper X5 position (see paragraph 6.3) Common 0Vdc

X2.3

Fluoroscopy call OUT

Generator (with shielded cable) Generator

X2.4

X-ray ON IN

Generator

X2.5

Fluoroscopy request IN

Radiological table

X2.6 X2.7 X2.8 X2.9 X2.10

Clockwise camera rotation IN Anti-clockwise camera rotation IN Vertical inversion IN Horizontal inversion IN D.R.F. enable IN

Radiological table Radiological table A2 board – X4.7

X2.11

Recursive filter x0 IN

Radiological table

X2.12

Recursive filter x4 IN

A2 board – X4.7

X2.13

Recursive filter x8 IN

Radiological table

X2.14

Recursive filter x16 IN

Radiological table

X2.15

Video signal area control selection for fluoro kV auto adjustment (R.O.I.) IN

Radiological table

X2.1

IB SYSTEM

36

Active with continuous and pulsed fluoro Active with pulsed fluoro Active with continuous and pulsed fluoro Optional Optional

D.R.F. function must be disabled in pulsed fluoro Remotable function present on Apollo table only x4 recursive filter must be selected with pulsed fluoro because D.R.F. is disabled Remotable function present on Apollo table only Remotable function present on Apollo table only Remotable function present on Apollo table only

(Rev. 7)

TECHNICAL MANUAL Assembly

Contact

Description

Connect to A1 board – X6.1 A1 board – X6.2 CCU N33 – X3 (+) CCU N33 – X3 (-)

X3.1 X3.2 X3.3 X3.4

26Vdc Power Supply IN Ovdc Power Supply IN 26Vdc Power Supply OUT

X4.1

Freeze channel A IN

X4.2

Freeze channel B IN

X4.3

X4.6

“Neutral density” filter enable IN Automatic white level IN Pulsed fluoro exposure request OUT Pulsed fluoro request IN

Generator

X4.7

0V signal OUT in pulsed fluoro

A2 board – X2.10

X4.8

Synch 25Hz IN

CCU N23 – V3

X4.9 X4.10

0V 0V

X6.1 X6.2 X6.3 X6.4 X6.5 X6.6 X6.7 X6.8 X6.9

A.D.D. 1 A.D.D. 0 A.D.D. 2 A.D.D. 4 M.V.R. A.D.D. 3 A.D.D. 5 Not used 0V

X4.4 X4.5

(Rev. 7)

0Vdc Power Supply OUT

Characteristics A2 board Power supply A2 board Power supply CCU N33 Power Supply CCU N33 Power Supply Present only on N33 CCU with digital memory Opzionale Opzionali

Generator Active input with pulsed fluoro selected Active during pulsed fluoro and present up to 400ms after exposure stop Synch signal for pulse start

Present only on N33 CCU with digital memory

37

IB SYSTEM

TECHNICAL MANUAL Connection of accessories

7.

CONNECTION OF ACCESSORIES

7.1

Connection of generators The IB SYSTEM can be connected to High Frequency (HF) generators controlled by microprocessor or to conventional generators, which require the VARIAC module.

7.1.1

Connection to generators The IB SYSTEM is compatible with the Genius HF, Genius HF-A, G100RF and G100RF-A high frequency generator family. The pulsed fluoro modality, available on TV chain N33, is allowed with generator Genius HF-A and G100RF-A. The connection with these generators is shown in the following tables: A2 board for N23 TV chain

Description

GENIUS generator

X2.1

Analogic driving ABC

GTB 402

X2.2

O Vdc

GTB 401

X2.3

Fluoro call

GTB 429

X2.4

kV/mA automatic or manual selection

GTB 454

X4.5

Pulsed fluoro exposure request OUT

GTB 432

X4.6

Pulsed fluoro request IN

GTB 312 (§)

(§) Polarize to 0V the connector GTB 313. A2 board for N33 TV chain

Description

GENIUS generator

X2.1

Analogic driving ABC

GTB 402

X2.2

O Vdc

GTB 401

X2.3

Fluoro call

GTB 429

X2.4

X-ray ON in pulsed fluoro

GTB 330

X4.5

Pulsed fluoro exposure request OUT

GTB 432

X4.6

Pulsed fluoro request IN

GTB 312 (§)

(§) Polarize to 0V the connector GTB 313.

For further information, please refer to the GENIUS generator Service Manual. For G100 generators make reference to the "System Integration Guide" delivered with the generators.

IB SYSTEM

38

(Rev. 7)

TECHNICAL MANUAL Connection of accessories

The compatibility with other generators must be checked. Please bear in mind that, for the ABC function, the IB SYSTEM can drive generators that have either an analog input (0 ÷ 12Vdc scale) or a digital input (kV+, kV-). For the analog input, the driving is provided through connector X2, pin 1 (0V) and pin 2 (V ref.), of board A2; for the digital input instead the driving is provided through connector X5, pin 5 (kV-, common), pin 6 (kV-, open contact), pin 2 (kV+, common), pin 3 (kV+, open contact) of board A2.

(Rev. 7)

39

IB SYSTEM

TECHNICAL MANUAL Connection of accessories

7.1.2

Connection of VARIAC Module with I.I. system and with conventional generators If the equipment needs to be interfaced with a conventional generator, a special variac module is required to provide the generator with the automatic kV control voltage. The components of the variac module are housed in an enclosure which has the same dimensions as the component plate. The positioning of this module will depend on the type of accessories used in the radiological system. The connections to be made on the variac module are the following: Terminal X7.1 X7.2 X7.3 X7.4 X7.5

Description

Connect to

Common 0Vdc Man/auto kV select IN Fluoro call IN Common kV +/Variac motor Variac motor limit switch Variac motor Variac motor limit switch

A2 A2 A2 A2 A2 A2

X8.N X8.L X8.terra X8.4…X8.12

X7.6 X7.7 X7.8

X2.1 X2.4 X2.3 X5.1 + X5.4 X5.2 X5.3

Characteristics Active at 0Vdc Active at 0Vdc 0Vdc 24Vdc 24Vdc

A2 X5.5

24Vdc

A2 X5.6

24Vdc

Power supply: Neutral Power supply: Live Protective ground

Radiological table Radiological table Radiological table

230Vac 0.5A 230Vac 0.5A

Power supply kV and mA

Generator

230Vac (refer to the generator schematics)

In order to check the correctness of the connections, carry out the following functional test: 1. After completing the connections as shown above, check the voltage at terminals X8.7 e X8.6. If the measured voltage is higher than 230V, set the primary of transformer T2 to 380V. If the measured voltage is lower than 230V, the primary of transformer T2 must be set to the terminals 0-230V.

G IB SYSTEM

NOTE: For safety reasons, the factory setting of transformer T2 is 380V. This will avoid possible damages to the components in case of wrong setting.

40

(Rev. 7)

TECHNICAL MANUAL Connection of accessories

2. Enable the kV/mA automatic adjustment. Check that increasing the kV value also the mA value will increase. If the system behaves in the opposite way (increasing the kV value, the mA value decreases), reverse the connection on the primary of transformer T2 (the wire connected to terminal “0V” will be connected to the terminal “230V” or “380V”; the wire connected to the terminal “230V” or “380V” will be connected to the terminal “0V”) 3. Set the kV to the minimum value and check that the mA will not exceed the value 0.5mA. If not, modify the connection on the secondary of transformer T2 until obtaining the desired value of mA (increasing the voltage connection, the mA will decrease).

(Rev. 7)

41

IB SYSTEM

TECHNICAL MANUAL Connection of accessories

7.2

Connecting the tables The examination table is interfaced with the IB SYSTEM through functional signals. The following chapters provide the typical connections with the equipment manufactured by Villa Sistemi Medicali S.p.a.

7.2.1

Connection with APOLLO remote controlled table Connector on board A1

Description

Terminal block on Apollo

X0.1

Power supply Live

X0.S3

X0.2

Power supply. Neutral

X0.N

X0.3

Protection Ground

X4.1

Zoom 3

X0.29

X4.2

Zoom 2

X0.30

X4.3

Zoom 1

X0.31

X4.4

Common Toshiba/Thomson I.I.: 24Vdc Philips I.I.: 0Vdc

X0.32

Connector on board A2

Description

X0.ground

Terminal block on Apollo

X3.1

Selection kV/mA man./aut.

X0.49

X3.2

Common 0V

X0.20

X3.3

Fluoro call

X0.37

X3.4

Horizontal image invertion

X0.26

X3.5

Vertical image invertion

X0.27

Only for CCU N33

(*)

IB SYSTEM

X2.11

Recursive filter x0

X2.15

R.O.I.

X2.12

Recursive filter x4

X0.55 (*)

X2.13

Recursive filter x8

X0.56 (*)

X0.54 (*)

Depending by selection of cell 246, X0.54 output can drive R.O.I. or recursive filter. In the first case X0.55 and X0.56 are disabled, in the second case are enabled.

42

(Rev. 7)

TECHNICAL MANUAL Connection of accessories

7.2.2

Connection with MERCURY 332 remote controlled table Connector on board A1

Description

X0.1

Power supply Live

X0.T3

X0.2

Power supply. Neutral

X0.N

X0.3

Protection Ground

X4.1

Zoom 3

X0.21

X4.2

Zoom 2

X0.20

X4.3

Zoom 1

X0.22

X4.4

Common Toshiba/Thomson I.I.: 24Vdc Philips I.I.: 0Vdc

X0.19

Connector on board A2

(Rev. 7)

Terminal block on Mercury 332

Description

X0.ground

Terminal block on Mercury 332

X3.1

Selection kV/mA man./aut.

X0.42

X3.2

Common 0V

X0.29

X3.3

Fluoro call

X0.6

X3.4

Horizontal image invertion

X0.24

X3.5

Vertical image invertion

X0.25

X3.6

Brightness adjust. for room monitor

X0.27

X3.7

Contrast adjust. For room monitor

X0.28

X3.8

Shield for room monitor cable

X0.31

43

IB SYSTEM

TECHNICAL MANUAL Connection of accessories

7.2.3

Connection with SYMPHONY remote controlled table Connector on board A1

Description

X0.1

Power supply Live

X0.S3

X0.2

Power supply. Neutral

X0.N

X0.3

Protection Ground

X4.1

Zoom 3

X0.29

X4.2

Zoom 2

X0.30

X4.3

Zoom 1

X0.31

X4.4

Common Toshiba/Thomson I.I.: 24Vdc Philips I.I.: 0Vdc

X0.28

Connector on board A2

IB SYSTEM

Terminal block on Symphony

Description

X0.ground

Terminal block on Symphony

X3.1

Selection kV/mA man./aut.

X0.50

X3.2

Common 0V

X0.38

X3.3

Fluoro call

X0.18

X3.4

Horizontal image invertion

X0.33

X3.5

Vertical image invertion

X0.34

X3.6

Brightness adjust. for room monitor

X0.36

X3.7

Contrast adjust. For room monitor

X0.37

X3.8

Shield for room monitor cable

X0.40

44

(Rev. 7)

TECHNICAL MANUAL Connection of accessories

7.2.4

Connection with VISION tilting table Connector on board A1

Description

X0.1

Power supply Live

X0.T

X0.2

Power supply Neutral

X0.N

X0.3

Protective Ground

X4.1

Zoom 3

X0.14

X4.2

Zoom 2

X0.15

X4.3

Zoom 1

X0.16

X4.4

Common Toshiba/Thomson I.I.: 24Vdc Philips I.I.: 0Vdc

X0.17

Connector on board A2

(Rev. 7)

Terminal block on Vision

Description

X0.ground

Terminal block on Vision

X3.1

Selection kV/mA man./aut.

X0.10

X3.2

Common 0V

X0.3

X3.3

Fluoro call

X0.4

X3.4

Horizontal image invertion

X0.19

X3.5

Vertical image invertion

X0.18

45

IB SYSTEM

TECHNICAL MANUAL Connection of accessories

7.2.5

Assembling and wiring the keypad for over-table serial changers (SAG 4 - SAG 6) on VIROMATIC The keypad is though to be installed on serial changers manufactured by Villa Sistemi Medicali (SAG 4 – SAG 6). In case of need, check its compatibility with other models of serial changers. 1. Fix the keypad on the head side of the serial changer using the two M4 screws, as shown in the drawing below:

Over-table serial changer

Patient head side Keypad Figure 7-1: Position of the keypad on over-table serial changers

2. Run the corrugated tube along the side of the serial changer and down to the equipment base 3. Fix the male connectors PRT20 and PRT21 to the bar at the foot of the table 4. The cable departing from connector PRT 20 must be brought to the component board, making the following connections (see also the annexed schematic): • connector X4 (4 pin connector) on circuit board A1 (power supply). I.I. field select • connector X7 (2 pin connector) on circuit board A1 (power supply). 24Vdc signal lamps power supply • terminal block X3 (terminals 1, 2, 4, 5) on table-generator interface board A2. Inversions and man/auto kV selection

IB SYSTEM

46

(Rev. 7)

TECHNICAL MANUAL Connection of accessories

5. The cable departing from connector PRT21 must be brought directly to generator. In the case of connection to a conventional generator, this cable is not used. The three conductors are connected directly to the 10kOhm potentiometer on the manual kV adjustment keypad. The conductors are identified as follows: PRT21 pin

Color

Function

1 2 3 4

Red Black White Green

Trimmer endpoint Shielding braid Trimmer endpoint Trimmer slider

The potentiometer is used only if the equipment is connected to a high frequency generator (Genius HF) and it's used for the manual adjustment of the kV. For the connection between the trimmer and the generator, refer to the manual of the generator.

(Rev. 7)

47

IB SYSTEM

TECHNICAL MANUAL Connection of accessories

7.3

Connection with digital acquisition system (DIVA-D) If the installation includes a digital acquisition system (DIVA-D), on the component plate the digital interface board (POD) will be installed in place of the table-generator interface board A2. The general interconnections of the system are provided by the DIVA-D Service Manual. The only direct connection between the component plate and the POD board is the following: Connector on board A1

IB SYSTEM

Description

Terminal on POD board

X5.1

V ref. for I.I. field

30

X5.2

0 Vdc

31

48

(Rev. 7)

TECHNICAL MANUAL Functional checks

8.

FUNCTIONAL CHECKS WARNING: THE FOLLOWING OPERATIONS REQUIRE EMISSION OF AN X-RAY BEAM. ALTHOUGH THE I.I. ENVELOPE IS SUFFICIENTLY SCREENED WITH LEAD, THE SERVICE TECHNICIAN MUST NONETHELESS TAKE EVERY PRECAUTION TO MINIMISE HIS EXPOSURE TO X RAYS.

8.1

Description of the controls The controls for operating the IB SYSTEM are not situated on the IB SYSTEM itself, but rather in different positions depending on the type of table. The controls are situated on the control console in the case of remote controlled tables, and on the serial changer in the case of tilting tables. Further details on the positions of the controls can therefore be found in the documentation supplied with the radiological table. All the controls are identified by means of standard symbols, in accordance with the IEC regulations. The following table summarises the function and position of each control, together with the corresponding symbol.

(Rev. 7)

49

IB SYSTEM

TECHNICAL MANUAL Functional checks

Symbol

IB SYSTEM

Description

Position of the control on the radiological table Remote controlled

Tilting Vision

Tilting Viromatic

Select large I.I. field (zoom 1)

On remote controlled table console

On serial changer control console

Dedicated keypad on serial changer

Select medium I.I. field (zoom 2)

On remote controlled table console

On serial changer control console

Dedicated keypad on serial changer

Select small I.I. field (zoom 3)

On remote controlled table console

On serial changer control console

Dedicated keypad on serial changer

Select manual kV operating mode. When the function is enabled, the kV must be adjusted using the generator and/or table controls. When the function is disabled, the kV are automatically adjusted as a function of the density of the organ in question.

On remote controlled table console

On serial changer control console

Dedicated keypad on serial changer

Vertical image inversion (up/down)

On remote controlled table console

On serial changer control console

Dedicated keypad on serial changer

Horizontal image inversion (left/right)

On remote controlled table console

On serial changer control console

Dedicated keypad on serial changer

Monitor brightness adjustment

On remote controlled table console, via +/keys and on the monitor front panel by means of keys

On the monitor front panel by means of keys

On the monitor front panel by means of keys

Monitor contrast adjustment

On remote controlled table console, via +/keys and on the monitor front panel by means of keys

On the monitor front panel by means of keys

On the monitor front panel by means of keys

50

(Rev. 7)

TECHNICAL MANUAL Functional checks

8.2

Functional checks After completing the installation, check the correct operation of: • last image hold (if necessary, check the connections) • vertical and horizontal inversion (if necessary, check the connections) • remote monitor brightness and contrast adjustment (if necessary, check the connections) • I.I. zoom (if necessary, check the connections) • image orientation (if necessary, proceed as described in paragraph 9.1.2) • recursive filter (if necessary, proceed as described in paragraph 6.2) • automatic kV adjustment (if necessary, proceed as described in paragraph 9.1.3). In automatic mode, the kV value should reach a steady state without oscillations within a couple of seconds. If this is not the case, adjust the generator parameters as described in the corresponding service manual.

G

(Rev. 7)

NOTE: For TV chain N33 only, is possible to get a test pattern to check the image quality on the monitor. To do that, set dip-switches S1.4 and S1.7 (A2 board) ON.

51

IB SYSTEM

TECHNICAL MANUAL Functional checks

8.3

Checking the image quality TV chains N23 and N33 DRF comes with Dynamic Recursive Filter. This feature, activated by default, can be disabled acting on board A2 (tablegenerator interface). It is advised to let this feature enabled because it enhances image quality both statically and during motion. Before checking image quality make sure that this feature is enabled and, if necessary increase the filtering action as described at paragraph 6.2 and paragraph 6.3.

G

8.3.1

NOTE: Filter weight (X0, X4, X8, X16) is more influent when standard recursive filter is activated; for Dynamic Recursive Filter the default setting is generally sufficient and acting on X0, X4, X8 or X16 does not affect significantly the filter action.

Jumpers X10 and X11 setting on Power Supply board A1 The two jumpers X10 and X11 on power supply board A1 connect the zero volt nodes of the I.I. and CCU power supplies, respectively, to ground. If the image on the monitor appears banded or noisy, remove/insert the jumpers to obtain a condition that minimizes noise.

IB SYSTEM

52

(Rev. 7)

TECHNICAL MANUAL Functional checks

8.3.2

Spatial resolution 1. Place a fluoroscopy spatial resolution phantom (range from 1 to 5 lp/mm) at the centre of the I.I.. The phantom must be rotated through 30-45° relative to the orthogonal axes. The most commonly used phantoms are: • Huttner type 18 (contained in Leeds University Test Object Set) • Nuclear Associates model 07-535 • Wellhofer model ETR1 2. Make an X-ray exposure regulating kV and mA in such a way to optimize spatial resolution (i.e. focus of the system). 3. Adjust the monitor contrast to the maximal value (fully clockwise) 4. Adjust the monitor brightness so that the view of the phantom is as detailed as possible. 5. Select the different I.I. zooms (N, M1, M2) and compare them with the minimum limits given in the following table. Under optimal calibration conditions, the spatial resolution for each I.I. format and for each zoom level must be greater than or equal to the values given in table: I.I. 9”

I.I. 12”

Full field (N)

1.6

1.4

Zoom M1

2.0

1.6

Zoom M2

2.24

2.0

The acceptable limits are expressed in line pairs per millimetre (lp/mm). The limits are given only for the standard I.I. versions.

(Rev. 7)

53

IB SYSTEM

TECHNICAL MANUAL Functional checks

8.3.3

Grey scale (Leeds Test Object GS2)

Figure 8-1: Leeds Test Object GS2 phantom 1. Position the Leeds Test Object “GS2” phantom at the centre of the I.I.. The phantom must be aligned with the reference axes 2. Insert a 1.5mm thick copper plate 3. Perform X-ray exposure with automatic regulation of radiological parameters. 4. For optimal calibration of the system, after adjusting the monitor brightness and contrast the following conditions must be met: • white circle visible inside the upper square • black circle visible inside the lower square • grey scale completely visible (10 levels of grey).

G

IB SYSTEM

NOTE: Typically I.I. systems are factory calibrated to deliver a dose in front of the I.I. entrance surface of 45µR/s.

54

(Rev. 7)

TECHNICAL MANUAL Functional checks

8.3.4

Loss of contrast and noise (Leeds Test Object N3)

12 11

1

10

18

17

9

19

16

8

2

13

15

7

3

14

4 5

6

TO.N3 Figure 8-2: Leeds Test Object N3 phantom 1. Position Leeds Test Object “N3” phantom at the centre of the I.I.. The phantom must be aligned with the orthogonal axes and oriented so that the reference notch is at the top right 2. Insert a 1.5mm thick copper plate 3. Perform X-ray exposure with automatic regulation of radiological parameters. 4. Adjust the monitor contrast and brightness to display the greatest possible level of detail. In optimal conditions, at least 12 details must be visible.

G

(Rev. 7)

NOTE: Typically I.I. systems are factory calibrated to deliver a dose in front of the I.I. entrance surface of 45µR/s.

55

IB SYSTEM

TECHNICAL MANUAL Functional checks

8.3.5

Detail/contrast ratio (Leeds Test Object TO.10) 1. Position the Leeds Test Object “TO.10” phantom at the centre of the I.I.. The phantom must be aligned with the reference axes and oriented so that the reference notch is on the upper right. 6

7

8

5

4

3 2

9

1 D E

9 8 7 6 5 4 3 2 1

9

F

G H J

9 8 7 6 5 4 3 2 1

B

C

1 A

K L M

8

2

3

7

4

6 5

TO.10

Figure 8-3: Leeds Test Object TO.10 phantom 2. Insert a 1.5mm copper plate 3. Perform X-ray exposure with automatic regulation of radiological parameters. 4. Adjust the monitor contrast and brightness to display the greatest possible level of detail 5. Note the number of details which are visible (from 1 to 9) for each group of objects (from A to M), as shown in the figure. Each visible object corresponds to a percentage contrast level as set out in the following table: Group A, B, C D, E, F G, H, J K, L, M

IB SYSTEM

1 0.16 0.23 0.50 0.93

2 0.123 0.16 0.35 0.66

3 0.086 0.123 0.23 0.50

Detail number 4 5 6 0.066 0.045 0.032 0.086 0.066 0.045 0.16 0.123 0.086 0.35 0.23 0.16

56

7 0.023 0.032 0.066 0.123

8 0.016 0.023 0.045 0.086

9 0.012 0.016 0.032 0.066

(Rev. 7)

TECHNICAL MANUAL Functional checks

In optimal conditions, the minimum number of visible details is the following: Group Minimum number of object

A 7

B 7

C 6

D 6

E 5

F 5

G 5

H 5

J 4

K 3

L 2

M 1

Per impianti con catena TV N33 ed IB HR il rapporto dettaglio/contrasto sarà migliore.

G

(Rev. 7)

NOTE: Typically I.I. systems are factory calibrated to deliver a dose in front of the I.I. entrance surface of 45µR/s.

57

IB SYSTEM

TECHNICAL MANUAL Functional checks

9.

ADJUSTMENT

G

NOTE: The adjustments described below are factory settings made during the equipment testing phase, and do NOT normally need to be changed at the time of installation. The following operations should be performed in the field only when absolutely necessary, for example in the event of malfunction, replacement of components, or maintenance.

WARNING: CERTAIN MAINTENANCE OPERATIONS REQUIRE THE EMISSION OF AN X-RAY BEAM. ALTHOUGH THE I.I. ENCLOSURE IS SUFFICIENTLY SCREENED WITH LEAD, THE SERVICE TECHNICIAN MUST IN ANY CASE TAKE EVERY PRECAUTION TO MINIMISE HIS EXPOSURE TO RADIATION.

9.1

Camera adjustment

a

G

NOTE: The “a” distance is in function of I.I. model used and it is adjusted in factory during final test. If the camera must be replaced, recorder the “a” distance and apply on the new one. If spacer are present between camera and I.I. re-use that for the new camera.

WARNING: Removing the camera exposes the I.I. output window and the camera lens. Be careful not to touch the output window or the lens with your fingers or with any type of object.

IB SYSTEM

58

(Rev. 7)

TECHNICAL MANUAL Functional checks

1. Carefully clean the entire contact area between the camera flange and the I.I. output surface 2. Carefully clean the camera fixing flange 3. Carefully and very delicately clean the I.I. output window 4. Remove the protective cap from the camera lens and carefully and very delicately clean it 5. Assemble the camera by inserting the three M4 screws, without locking them down. Place a metal washer and a nylon washer between the screw heads and the camera flange, as shown in the figure: Camera body

Metal washer

Screw head

Nylon washer II body

Figure 9-1: Fixing of the camera 6. Make sure that there is NO electrical continuity between the camera body and the body of the I.I.. If this is not the case, disassemble the camera and clean the contact surfaces between the camera and the I.I. 7. Connect the camera cable X2 (9 pin D-connector) and lock down the clamping screws 8. Connect the I.I. cable X3 (5 pins) 9. Connect the ground cable under one of the fixing screws of the steel ring.

(Rev. 7)

59

IB SYSTEM

TECHNICAL MANUAL Functional checks

G

9.1.1

NOTE: Before making the following adjustments, make sure that the camera electronic circle is disabled: •

N23 TV chain: Jumper J2 on circuit board N23_ANB1 OFF, pins 1-2 of CCU - see paragraph 9.2

•

N33 TV chain: set dip-switches S1.4 and S1.5 ON.

Focal distance 1. Using a felt tip pen, mark the two orthogonal axes with a cross at the centre of the monitor screen. Also mark the intersection of these axes with a circle 255mm in diameter

F

E D C Figure 9-2: Camera, side view 2. Back off the ring “C” and the dowel “D”. 3. Disable the Vertical Inversion and Horizontal Inversion commands and disable the zoom 4. Perform X-ray exposure. Nominal parameters: 45kV, 1.0mA 5. Adjust the monitor brightness and contrast so that the circle is clearly visible 6. Holding the camera body “F” firmly in place, turn the ring “E” so that a circle 255±5 mm in diameter appears on the screen of the 17” monitor. Turn the ring in a clockwise direction to enlarge the image, and vice versa. To help make these adjustment, use the reference lines drawn on the monitor. Pay attention to the parallax errors when making these adjustments. 7. Stop the X-ray exposure and lock down the dowel “D” and the ring “C”. IB SYSTEM

60

(Rev. 7)

TECHNICAL MANUAL Functional checks

9.1.2

Orientation and centering 1. If the camera must be replaced, fix the new one in such a way the cable output will be in the same position of the old one. 2. Position a phantom with centring grid, for example Wellhofer model ETR 1, at the centre of the radiological table 3. Disable the Vertical Inversion, Horizontal Inversion and zoom commands 4. Slightly back off the locking ring “C” (Figure 9-2) 5. Perform X-ray exposure. Nominal parameters: 45kV, 1.0mA 6. Adjust the monitor brightness and contrast so that the phantom is clearly visible 7. Looking at the monitor, rotate the camera so that the image is aligned with the reference cross marked on the monitor 8. Stop the X-ray exposure 9. Lock down the ring “C” firmly, but without using any tools 10. Lightly back off the three camera fixing screws 11. Perform X-ray exposure. Parameters: 45kV, 1.0mA 12. Looking at the monitor, move the camera so that the image is centered on the reference cross marked on the monitor. Pay attention to the parallax errors during these adjustments 13. Stop the X-ray exposure 14. Lock down the three screws.

(Rev. 7)

61

IB SYSTEM

TECHNICAL MANUAL Functional checks

9.1.3

Diaphragm and automatic kV adjustment The diaphragm adjustment is closely correlated with the kV value that will be delivered by the generator (when operating in automatic kV mode). The greater the aperture, the more light reaches the camera, and hence the higher will be the feedback signal which regulates the kV stability point. Essentially, all other things being equal, when the aperture opening is increased, the generator will settle on a lower kV value. The equipment is factory calibrated to reach a steady state with an I.I. input dose rate of 45µR/s, which is the value commonly recommended by the quality protocols for radioscopy examinations.

DIAFRAMMA DIAPHRAGM “B”

FUOCO FOCUS “A”

DIAFRAMMA DIAPHRAGM “B”

N23 camera, top view

FUOCO FOCUS “A”

N33 camera, top view Figure 9-3

To check the adjustment, proceed as follows: 1. Place a 1 mm copper plate between the X-ray tube and the I.I. 2. Select the automatic kV adjustment mode. This means that the input dose rate to the I.I. is 45µR/s. If the steady state value is significantly different, it will be necessary to adjust the aperture 3. Connect a digital voltmeter between X2.1 and X2.2 of A2 board. Full scale 20Vdc 4. Turn the adjuster screw of diaphragm “B” (Figure 9-3) on the camera, until the voltmeter reading is 6.5 Vdc ±0.2V. This voltage corresponds to the condition of “kV steady state”. In these conditions, the two LED's on the CCU must both be off

IB SYSTEM

62

(Rev. 7)

TECHNICAL MANUAL Functional checks

5. In order to stabilise the kV for different dose rate values, adjust the kV, mA and filtration values accordingly. Note that higher dose rates produce more detailed images, but expose the patient to higher doses of radiation. It is recommended to not exceed 60µR/s. The video signal output by the camera must have a peak value of 0.6V (measured on the camera output with an oscilloscope). See the trace in Figure 9-4 below. 0,1 V/div 10 µs/div

Figure 9-4: Waveform at the camera output for adjusting the aperture

G

(Rev. 7)

NOTE: It is possible to modify the kV automatic regulation window. The factory calibration is set to cause the automatic correction for values ± 2 kV. To change this setting act on trimmer P4 for N23 camera or trimmer R106 for N33 camera. Please be aware that changing this setting moves the balancing regulation, so it will be necessary to adjust also the setting of trimmer P11 for N23 camera or R79 for N33 camera. Changing this setting can have adverse effects like: • image instability due to high gain feedback on kV (if the window is too narrow) • different brightness of the same image after automatic regulation (if the window is too wide).

63

IB SYSTEM

TECHNICAL MANUAL Functional checks

9.1.4

Adjusting the focus 1. Place a fluoroscopy spatial resolution phantom (range from 1 to 5 lp/mm) at the centre of the I.I.. The phantom must be rotated through 30-45° relative to the orthogonal axes. The more commonly used phantoms are: • Huttner typ 18 (contained in the Leeds University Test Object set) • Nuclear Associates model 07-535 • Wellhofer model ETR1 2. Select the maximum I.I. zoom 3. Made an X-ray exposure regulating kV and mA in such a way to optimize spatial resolution (i.e. focus of the system) 4. Adjust the monitor contrast to the maximal value; adjust the monitor brightness so that the view of the phantom is as detailed as possible 5. Turn the focus adjuster screw “A” on the camera to display the greatest possible number of lines on the phantom

DIAFRAMMA DIAPHRAGM “B”

FUOCO FOCUS “A”

DIAFRAMMA DIAPHRAGM “B”

N23 camera, top view

FUOCO FOCUS “A”

N33 camera, top view Figure 9-5

Alternative method 1. Place at the centre of the I.I. the “MS 1” phantom of the Leeds University “SFS Standard Fluoroscopy Set” 2. Select the maximum I.I. zoom 3. Made an X-ray exposure regulating kV and mA in such a way to optimize spatial resolution (i.e. focus of the system) 4. Adjust the monitor contrast to its maximal value 5. Adjust the monitor brightness so that the image of the monitor is only just visible 6. Turn the focus adjuster screw “A” on the camera until the image on the monitor is as bright as possible. At the end of the procedure, halt the X-ray exposure. IB SYSTEM

64

(Rev. 7)

TECHNICAL MANUAL Functional checks

9.1.5

Cleanliness of the optics and output window and blemishes 1. Disable the Vertical Invert, Horizontal Invert and zoom commands 2. Adjust the contrast of the monitor to its maximum value 3. Set kV/mA in manual mode; made X-ray exposure (Nominal parameters: 40kV, 0.5mA) and adjust kV value up to obtain a low brightness image 4. Check for any spotting, halation or dust on the image. If any spots are observed, try rotating the camera: • if the spot on the monitor rotates when the camera is rotated, the spot is on the I.I. output window • if the spot on the monitor stays in the same place when the camera is rotated, the spot is on the camera optics. Carefully and delicately clean the soiled component as described in paragraph 12.3 and then reassemble the camera.

(Rev. 7)

65

IB SYSTEM

TECHNICAL MANUAL Functional checks

9.2

Adjusting the CCU To access the adjustments, remove the top cover of the CCU.

kVROSSO RED

kV+ VERDE GREEN P7

P9

P10

J4

SW3

P5

P6

P8

1

1

R163 R156

P11 SW4 1 J2

J6 1

P4 P3

P2

1

SW2 1

R157

P1

R94 J5 1

N23_ANB1

X5

X1

X5 X6

X5 X2

X 6: Power supply and Interface X 5: 100 Hz Digital Video out

X 1: 50Hz Analogue Video out X 2: Camera input X 5: 50Hz Digital Video out

Figure 9-6: N 23 CCU N23_ANB1 circuit board adjustments Trimmer P1 Circle vertical shift Trimmer P2 Circle horizontal shift Trimmer P3 Electronic circle symmetry Trimmer P4 AUTO kV WINDOW for automatic kV control Trimmer P5 AUTO CIRCLE diameter (Automatic kV measurement circle) Trimmer P6 Circle diameter Trimmer P7 Vertical ramp uniformity Trimmer P8 Vertical parabola uniformity Trimmer P9 Horizontal parabola uniformity Trimmer P10 Horizontal ramp uniformity Trimmer P11 AUTO kV LEVEL for automatic kV set-point value Trimmer Trimmer Trimmer Trimmer

R157 R163 R156 R94

IB SYSTEM

Black level White level Automatic black level control Grey scale correction

66

Jumper J2

Jumper J4 Jumper J6 Jumper SW3 Jumper SW2 Jumper SW4

G

Electronic circle ON (3-4) / AUTO kV CIRCLE ON (2-3) / OFF (1-2) Uniformity correction ON (2-3) / OFF (1-2) Grey scale correction (GAMMA) value 0.4 (1-2) / value 1 (2-3) AUTO WHITE LEVEL ON (1-2) / OFF (2-3) AUTO BLACK LEVEL ON (1-2) / OFF (2-3) Select output X1 Analogue video (2-3) Synchronisation 25Hz (1-2)

NOTE: Figure 9-6 also shows the default jumper settings.

(Rev. 4)

TECHNICAL MANUAL Functional checks

ROSSO RED

R106

J4 1 R48

R47

R52

R61

R79

kV- kV+ VERDE GREEN

R84 R100 R101

J6 J5 J7 J8

1 1

1 1

NDR_ADV0

N30_PWR20

V4

X6 (V3)

X4

X5

X2

X1

X3

V 4: Output video (optional from Scan Converter) X 6 (V 3): 25Hz Output for pulsed fluoro sync X 4: Video Output channel B X 5: Video Output channel A X 1: Signal cable connector

X 2: Camera cable connector X 3: 24V Power supply connector

Figure 9-7: N33 CCU N30_PWR20 circuit board adjustments Trimmer R101 Black level Trimmer R100 Automatic black level control Trimmer R84 Automatic white level control Trimmer R79 Set-point for auto kV adjustment Trimmer R106 AUTO kV WINDOW for automatic kV control Trimmer R61 Vertical ramp uniformity Trimmer R52 Vertical parabola uniformity Trimmer R47 Horizontal ramp uniformity Trimmer R48 Horizontal parabola uniformity

(Rev. 7)

Jumper J6 Jumper J5 Jumper J4

AUTO BLACK LEVEL – ON (1-2) AUTO WHITE LEVEL – ON (1-2) Correzione uniformità – ON (2-3) Jumper J7/J8 Auto kV modality: - both 1-2 = Digital adjustment - both 2-3 = Analogic adjustment

G

67

NOTE: Figure 9-7 also shows the default jumper settings.

IB SYSTEM

TECHNICAL MANUAL Functional checks

9.2.1

G

Uniformity (Shading or vignetting)

NOTE: Trimmers and jumpers reference indicated as ( ) are relevant to N33 TV chain.

1. Disable the Vertical Invert, Horizontal Invert and zoom commands 2. Insert a 1 mm thick copper plate 3. Close jumper J4 (J4) in positions 2-3 4. Connect an analogue oscilloscope between ground and digital video output X5 (X5) 5. X-ray exposure. Typical parameters: 65kV, 1.0mA 6. Set the oscilloscope for 0.1 V/div, 2ms: •

adjust P7 (R61) to compensate the vertical ramp

•

adjust P8 (R52) to compensate the vertical parabola

7. Set the oscilloscope for 0.1V/div, 5µs: •

adjust P9 (R48) to compensate the horizontal parabola

•

adjust P10 (R47) to compensate the horizontal ramp.

The purpose of the adjustments is to obtain a waveform that is as linear as possible. Refer to the waveforms below: 0,1 V/div 5 µs/div and 2ms/div

Figure 9-8: Correct adjustment of Shading

IB SYSTEM

68

(Rev. 7)

TECHNICAL MANUAL Functional checks

0,1 V/div 5 µs/div and 2ms/div

Figure 9-9: Incorrect adjustment of parabola non uniformity

0,1 V/div 5 µs/div and 2ms/div

Figure 9-10: Incorrect adjustment of the ramp non uniformity If an oscilloscope is not available, proceed as follows: 1. Adjust the monitor contrast to its maximum value 2. Adjust the monitor brightness to approximately its mid-point setting 3. Adjust the trimmers so that the image is as uniform as possible.

(Rev. 7)

69

IB SYSTEM

TECHNICAL MANUAL Functional checks

9.2.2

G G

Electronic circle (only for N23 TV chain)

NOTE: Circle dimension is obtained in digital way for N33 TV chain. Consequently no adjustment is required.

NOTE: To help make these adjustments, use the reference marks on the monitor. Pay attention to the parallax errors during these adjustments.

1. On board N23_ANB1 fit jumper J2 in position 1-2 (removal of the electronic circle from the monitor) 2. Position on the tabletop a phantom for fluoroscopy spatial resolution (range from 1 5 pl/mm) and activate the X-ray emission 3. Check for proper focusing of the image. If necessary, act on screw “A” to optimize the focusing

FUOCO FOCUS “A”

Figure 9-11: N23 Camera top view 4. On board N23_ANB1 fit jumper J2 in position 3-4; the electronic circle will reappear on the monitor screen 5. Acting on trimmer P6 (board N23_ANB1), adjust the amplitude of the electronic circle in order to inscribe it 1mm within the obtained image 6. Check the position of the circle by activating the image inversions. If it is uncentered with respect to the monitor screen, act on trimmers G2 and/or N14 of board SV85, in order to modify vertical and/or horizontal position of the image respectively.

IB SYSTEM

70

(Rev. 7)

TECHNICAL MANUAL Functional checks

9.2.3

G

Automatic kV adjustment measurement circle

NOTE: R.O.I. dimensions are obtained in digital way for N33 TV chain. Dimensions selection is described on paragraph 6.3. To display the R.O.I. dimensions selected, set dip-switches S1.4 and S1.6 (A2 board) ON.

1. On board N23_ANB1 fit jumper J2 in positions 2-3. The automatic kV measurement circle will appear on the monitor. If the circle does not appear, adjust the brightness and contrast of the monitor 2. Adjust P5 so that the circle on the monitor has a diameter of 140 mm on 17” monitor and 170 mm on 21” monitor 3. Re-fit jumper J2 in positions 3-4.

(Rev. 7)

71

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TECHNICAL MANUAL Functional checks

9.2.4

Black level

WARNING: This is a factory setting. Only change this adjustment when absolutely necessary.

G

NOTE: Trimmers and jumpers reference indicated as ( ) are relevant to N33 TV chain.

1. Connect an oscilloscope on the analogue video output X1 (X5) on the CCU. Set the oscilloscope for 10 mV/div, 5 µs/div 2. Remove jumper SW3 (J5) 3. Without X-ray, adjust R157 (R101) until an average oscilloscope reading of 30mV is obtained. Refer to the waveform in Figure 9-12 4. Replace jumper SW3 (J5). 10 mV/div 5 µs/div

Figure 9-12: Waveform for adjusting the black level

IB SYSTEM

72

(Rev. 7)

TECHNICAL MANUAL Functional checks

9.2.5

White level

WARNING: This is a factory setting. Only change this adjustment when absolutely necessary.

G

NOTE: Trimmers and jumpers reference indicated as ( ) are relevant to N33 TV chain.

1. Insert copper disk for thickness of 1 mm 2. Connect an oscilloscope on the analogue video output X1 (X5) on the CCU. Set the oscilloscope for 0.1V/div, 5µs 3. Remove jumper SW2 (J6) 4. X-ray exposure. Nominal parameters: 70kV, 1.2mA. These parameters correspond to an input dose rate of approximately 45µR/s 5. Remove jumper SW3 (J5). The waveform shown on the oscilloscope will be as shown in Figure 9-13. Note the peak value of the signal 0,1 V/div 5 µs/div

Figure 9-13: Waveform displayed when jumpers SW3 (J5) and SW2 (J6) are opened 6. Close jumper SW3 (J5)

(Rev. 7)

73

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TECHNICAL MANUAL Functional checks

7. Adjust R163 (R84) so that the level of the waveform is the same as it was with the jumper open 8. Visually check that the two waveforms coincide by opening and closing the jumper 9. Replace jumpers SW2 (J6) and SW3 (J5) 10. Turn R156 (R100) fully counter-clockwise 11. X-ray exposure. Parameters: 80kV, 1.2mA 12. Turn R156 (R100) in a clockwise direction until the image stabilises without flickering 13. If the waveform is similar to that shown in Figure 9-14, continue turning R156 (R100) in a clockwise direction until it appears as shown in Figure 9-13. 0,1 V/div 5 µs/div

Figure 9-14: Incorrect adjustment of trimmer R74

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74

(Rev. 7)

TECHNICAL MANUAL Functional checks

9.2.6

Checking the auto black function 1. Place a copper disk and a lead disk of thickness 0.5 mm side by side at the centre of the I.I. 2. X-ray exposure. Parameters: 70kV, 1.2mA 3. On the monitor, check that the lead disk is shown completely black and that the copper disk is grey. If this is not the case, adjust the monitor brightness and contrast controls, and if necessary correct the kV and/or mA values of the generator 4. Halt the X-ray exposure and remove the lead disk 5. Repeat the exposure with the values set previously 6. Check that the copper disk now appears completely black. If this is not the case, make the adjustments described in paragraph 9.2.4 and 9.2.5.

(Rev. 7)

75

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TECHNICAL MANUAL Magnetic field correction coil power supply

10.

MAGNETIC FIELD CORRECTION COIL POWER SUPPLY This adjustment is applicable only to the 16" I.I. for digital applications. Circuit board 58161072 (magnetic field correction board) supplies the power to the geometric distortion correction coil on 16” I.I.s. The circuit board receives an input voltage between 20 and 30Vac and supplies a stabilised output voltage between 0.65 and 2.65 Vdc. The power supply is designed to operate with a load of 3 Ohms and a maximum continuous current of 1A. The positive terminal is on X2.1.

G

NOTE: The adjustment must be made with the radiological table in the most commonly used position, because the ground’s magnetic field causes the distortion to change considerably as a function of the tilting angle of the table.

1. Connect the two conductors from the I.I. on terminal block X2 2. Place a geometry evaluation phantom in front of the I.I. (for example model Wellhofer ETR1) 3. Initiate X-ray exposure and adjust trimmer R2 so as to minimise distortion of the image. If necessary, try inverting the polarity of X2.

IB SYSTEM

76

(Rev. 7)

TECHNICAL MANUAL Adjusting the HV power supply

11.

ADJUSTING THE HV POWER SUPPLY OF THE I.I. WARNING: This is a factory setting. Only change this adjustment when replacing the HV power supply on an existing I.I.

WARNING: IMPORTANT PRECAUTIONS The HV power supply board includes HIGH VOLTAGES which can reach 30kV (30.000 Volt). Do not touch any part of the power supply with bare hands or metal objects to avoid the risk of electrical shock. Note that these voltages persist for a few dozen seconds after the power supply has been disconnected. There are no power-on indicators on the I.I. or on the HV power supply board. Therefore, before operating on the I.I. always make sure that the power cable has been physically disconnected.

11.1

Adjustment for Toshiba 9” and 12” I.I. The trimmers only need to be adjusted if the HV power supply is replaced. In this case, adjust the trimmers to reinstate the voltage values of the old HV power supply (also indicated on the I.I. Inspection sheet attached to the present manual). The calibration sequence is: 1. Verify and eventually tune voltage G3 (image size) and G1 (uniformity of focus and brightness). 2. Tune voltage G2 (focus at the centre). The adjustments must be repeated for the three fields N, M1, M2. The pulse switch to adjust, the adjustment ranges and the test points are the following: Pulse switch

Description

Minimum

Maximum

Ratio

Test point

G1

Voltage G1 (Vdc)

35

350

100 V/V

TP4

G2

Voltage G2 (Vdc)

100

2000

1000 V/V

TP3

G3

Voltage G3 (kVdc)

2

20

10 kV/V

TP2

All the measurements must be made using a multimeter on the Vdc setting with input impedance no lower than 10MΩ.

(Rev. 7)

77

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TECHNICAL MANUAL Adjusting the HV power supply

The storage procedure of the tuned values for any voltage is: 1. Once voltage is correctly tuned, turn ON dip switch 1 of the configuration switch. 2. After a few seconds, turn OFF dip switch 1 of the configuration switch.

The pulse switch, test points and configuration switch are illustrated in Figure 11-1.

Figure 11-1: 9”/12” I.I. High Voltage power supply

IB SYSTEM

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(Rev. 7)

TECHNICAL MANUAL Adjusting the HV power supply

11.2

Adjustment for Philips 12” I.I. The only adjustment to the power supply that is necessary is the electrical focus of the image intensifier: 1. Select the required format (N, M1, M2); one of the LEDs (H2 to H6 Figure 11-2) will then light up. 2. Adjust the potentiometer (R3 to R14) next to the illuminated LED until the image is optimally focused. Each format can be focused independently of the others.

Figure 11-2: Interface panel layout Figure 11-2 legend: • connector X1: is the input for control signals and the low voltage supply • connector X2: is the output to the high voltage generator for the reference voltages and low voltage • jumper X3: select the type of high voltage generator being used. The setting should be: 1 – 3 closed 3 – 5 open 2 – 4 closed 4 – 6 open

(Rev. 7)

79

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TECHNICAL MANUAL Adjusting the HV power supply

11.3

G

Adjustment for Toshiba 16” I.I. The trimmers only need to be adjusted if the HV power supply is replaced. In this case, adjust the trimmers to reinstate the voltage values of the old HV power supply (also indicated on the I.I. Inspection sheet attached to the present manual). NOTE: G4 and G3 voltages may not be read by a common DVM because the voltage values are very high (more than 1000V). If only a common DVM is available do not attempt to calibrate these voltages: just leave the preset values which are usually OK.

The calibration sequence is: 1. Verify and eventually tune voltage G4 and G3 (if possible – see NOTE) and G1 2. Tune voltage G2 (focus at the centre) The adjustments must be repeated for the four fields N, M1, M2, M3. The trimmer to adjust, and the adjustment ranges are the following: Trimmer

Description

Minimum

Maximum

RV 4

Voltage G4 in N (Vdc)

4000

6000

RV 5

Voltage G4 in M1 (Vdc)

7000

10000

RV 6

Voltage G4 in M2 (Vdc)

13000

16000

RV 7

Voltage G4 in M3 (Vdc)

24000

27000

RV 8

Voltage G3 in N (Vdc)

500

1200

RV 9

Voltage G3 in M1 (Vdc)

500

1200

RV 10

Voltage G3 in M2 (Vdc)

500

1200

RV 11

Voltage G3 in M3 (Vdc)

1000

2500

RV 12

Voltage G2 in N (Vdc)

100

500

RV 13

Voltage G2 in M1 (Vdc)

100

500

RV 14

Voltage G2 in M2 (Vdc)

100

500

RV 15

Voltage G2 in M3 (Vdc)

100

500

RV 16

Voltage G1 in N e M1 (Vdc)

50

300

RV 17

Voltage G1 in M2 e M3 (Vdc)

50

300

Output voltage can be measured directly between output connectors and ground.

IB SYSTEM

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(Rev. 7)

TECHNICAL MANUAL Adjusting the HV power supply

All the measurements for G1, G2 must be made using a multimeter on the Vdc setting with input impedance no lower than 10MΩ. For G3 and G4 see the NOTE above. The trimmers and the output connectors are illustrated in Figure 11-3.

Figure 11-3: 16” I.I. High Voltage power supply

(Rev. 7)

81

IB SYSTEM

TECHNICAL MANUAL Maintenance and cleaning

12.

MAINTENANCE AND CLEANING WARNING: CERTAIN MAINTENANCE OPERATIONS REQUIRE THE EMISSION OF AN X-RAY BEAM. ALTHOUGH THE I.I. ENVELOPE IS SUFFICIENTLY SHIELDED WITH LEAD, THE SERVICE TECHNICIAN MUST IN ANY CASE TAKE EVERY PRECAUTION TO MINIMISE HIS EXPOSURE TO RADIATION.

12.1

Scheduled maintenance To ensure correct operation of the equipment over time, it is necessary to perform the following scheduled maintenance actions: Type of operation

Frequency

Reference

Check the automatic kV adjustment (*)

6 months

§ 9.1.3

Check the image quality

6 months

§ 8.3

Check the cleanliness of the I.I. and camera

6 months

§ 9.1.5

Check the presence and condition of the labels

1 year

§ 3.1

Check condition of electrical connections

1 year

Electrical diagrams

Check condition of mechanical fixing

1 year

Visual

(*) Due to the normal drift of the I.I. conversion factor, as time goes by there is a gradual increase in the kV set-point value. It is possible to compensate (within limits) for this drift by adjusting the aperture.

IB SYSTEM

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(Rev. 7)

TECHNICAL MANUAL Maintenance and cleaning

12.2

Special maintenance

Checking the output voltages

X

X

6.2

Connection of the interface board A2 for N23 TV chain

X

X

9.1.1

Focal distance

X

X

9.1.2

Orientation and centering

X

X

9.1.3

Diaphragm and automatic kV adjustment

9.1.4

Adjusting the focus

X

X

9.1.5

Cleanliness of the optics and output window and blemishes

X

X

9.2.1

Uniformity (Shading or vignetting)

X

X

X

9.2.2

Electronic circle

X

X

X

9.2.3

Automatic kV adjustment measurement circle

X

X

9.2.4

Black level

2)

2)

9.2.5

White level

2)

2)

9.2.6

Checking the auto black function

X

X

10

Magnetic field correction coil power supply

11

Adjusting the HV power supply of the I.I.

12.3

Cleaning

X

X

X X

Magn. field correction board

6.1.1

HV Power supply

X

Complete I.I.

X

CCU

Connection of the Power supply board A1

Camera

Power supply board

6.1

Paragraph and description of the adjustment to be made

Interface board

Installation

When special maintenance and/or component replacement operations are carried out, it is necessary to make the adjustments detailed in the following table:

X

X

X

1)

1)

X

X

X

1)

X

1)

X X

X

Notes: 1) only for 16” I.I. for Digital Acquisition System 2) these are factory settings and do not normally need to be changed. It is recommended to simply verify the settings

(Rev. 7)

83

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TECHNICAL MANUAL Maintenance and cleaning

12.3

Cleaning

WARNING: The cleaning operations described below must be performed exclusively by technical personnel authorised by Villa Sistemi Medicali.

WARNING: • before proceeding to clean the equipment, it is essential to disconnect it from the power supply • take the utmost care to avoid spilling water or other liquids into the equipment which may cause corrosion or short circuits • Clean the painted surfaces using only a moist cloth and neutral detergent, taking care to wipe them afterward with a dry cloth. Do not use solvents (alcohol, petrol, trichloroethylene) or corrosive or abrasive products.

The equipment does not have any parts which come into contact with the patient or the operator, therefore routine cleaning by the operator is not necessary. During examinations with contrast medium, the liquid may leak onto the entrance surface of the I.I.. This condition is readily detected because very evident spotting appears on the image. If this occurs, clean the entrance window with a moist cloth and neutral detergent. The operation must be carried out with great care because the entrance window is coated with a very thin (0.5 mm) aluminium sheet. If the camera or the I.I. are replaced, it is necessary to clean the I.I. output window and/or the camera optics. It is recommended to clean these components using compressed air sprays, soft brushes and disposable lens cleaning tissues. If necessary it is possible to use (lint free) paper tissues moistened with distilled water.

IB SYSTEM

84

(Rev. 7)

TECHNICAL MANUAL Schematics and drawings

13.

SCHEMATICS AND DRAWINGS 1. Component plate layout for standard I.I. (CCU 625 lines / 50 Hz) 2. Component plate layout for standard I.I. (CCU 625 lines / 100 Hz) 3. Component plate schematic for standard I.I. 4. A1 – Power supply board layout 5. A1 – Power supply board schematic 6. A2 – Table-generator interface board layout 7. A2 – Table-generator interface board schematic 8. VARIAC module assy layout 9. VARIAC module assy schematic 10. SAG4 / SAG6 SFD keyboard drawings 11. Component plate layout for HR I.I. (for Digital Acquisition System) 12. Component plate schematic for HR I.I. (for Digital Acquisition System) 13. Magnetic field correction board layout (only for 16" I.I.) 14. Magnetic field correction board schematic (only for 16" I.I.).

(Rev. 7)

85

IB SYSTEM

TECHNICAL MANUAL Schematics and drawings

THIS PAGE IS INTENTIONALLY LEFT BLANK

IB SYSTEM

86

(Rev. 7)

TECHNICAL MANUAL Schematics and drawings

(Rev. 7)

87

Component plate layout for standard I.I. (CCU 625 lines - 50Hz)

1

Code 72161050 - Rev. 2

Page 1 of 1

IB SYSTEM

TECHNICAL MANUAL Schematics and drawings

(Rev. 7)

89

Component plate layout for standard I.I. (CCU 625 lines - 100Hz)

2

Code 72161060 - Rev. 2

Page 1 of 1

IB SYSTEM

TECHNICAL MANUAL Schematics and drawings

(Rev. 7)

91

Component plate layout for standard I.I. (CCU 1kx1k N33)

3

Code 72161170 - Rev. 2

Page 1 of 1

IB SYSTEM

TECHNICAL MANUAL Schematics and drawings

(Rev. 7)

93

Component plate schematic for standard I.I. (CCU 625 lines - 50/100Hz)

4

Code 39169018 - Rev. 2

Page 1 of 1

IB SYSTEM

TECHNICAL MANUAL Schematics and drawings

(Rev. 7)

95

Component plate schematic for standard I.I. (CCU 1kx1k N33)

5

Code 39169032 - Rev. 1

Page 1 of 1

IB SYSTEM

TECHNICAL MANUAL Schematics and drawings

(Rev. 7)

97

A1 – Power supply board layout

6

Code 58161120 - Rev. 1

Page 1 of 1

IB SYSTEM

TECHNICAL MANUAL Schematics and drawings

Jumpers setting: The two jumpers X10 and X11 on power supply board A1 connect the zero volt nodes of the I.I. and CCU power supplies, respectively, to ground. Normally, both these jumpers should be closed. However, if the image on the monitor appears banded or noisy, open the jumpers to obtain a condition that minimises noise.

(Rev. 7)

99

A1 – Power supply board schematic

7

Code 39169027 - Rev. 0

Page 1 of 1

IB SYSTEM

TECHNICAL MANUAL Schematics and drawings

(Rev. 7)

A2 – Table-generator interface board layout for CCU N23

8

Code 58161010 – Rev. 1

Page 1 of 1

101

IB SYSTEM

TECHNICAL MANUAL Schematics and drawings

(Rev. 7)

103

A2 – Table-generator interface board schematic for CCU N23

9

Code 39169010 – Rev. 1

Page 1 of 1

IB SYSTEM

TECHNICAL MANUAL Schematics and drawings

(Rev. 7)

A2 – Table-generator interface board layout for CCU N33

10

Code 58161122 – Rev. 0

Page 1 of 1

105

IB SYSTEM

TECHNICAL MANUAL Schematics and drawings

(Rev. 7)

107

A2 – Table-generator interface board schematic for CCU N33

11

Code 39169030 – Rev. 1

Page 1 of 2

IB SYSTEM

TECHNICAL MANUAL Schematics and drawings

(Rev. 7)

109

A2 – Table-generator interface board schematic for CCU N33

11

Code 39169030 – Rev. 1

Page 2 of 2

IB SYSTEM

TECHNICAL MANUAL Schematics and drawings

(Rev. 7)

111

VARIAC module assy layout

12

Code 72161040 – Rev. 1

Page 1 of 1

IB SYSTEM

TECHNICAL MANUAL Schematics and drawings

(Rev. 7)

113

VARIAC module assy schematic

13

Code 39169016 – Rev. 0

Page 1 of 1

IB SYSTEM

TECHNICAL MANUAL Schematics and drawings

(Rev. 7)

115

SAG4 / SAG6 SFD keyboard drawings

14

Code 39169015 – Rev. 0

Page 1 of 1

IB SYSTEM

TECHNICAL MANUAL Schematics and drawings

(Rev. 7)

117

Component plate layout for HR I.I. (for Digital Acquisition System)

15

Code 72161055 – Rev. 2

Page 1 of 1

IB SYSTEM

TECHNICAL MANUAL Schematics and drawings

(Rev. 7)

119

Component plate schematic for HR I.I. (for Digital Acquisition System)

16

Code 39169017 – Rev. 3

Page 1 of 1

IB SYSTEM

TECHNICAL MANUAL Schematics and drawings

(Rev. 7)

Magnetic field correction brd layout (only for 16" I.I.)

17

Code 58161072 – Rev. 0

Page 1 of 1

121

IB SYSTEM

TECHNICAL MANUAL Schematics and drawings

(Rev. 7)

Magnetic field correction brd schematic (only for 16" I.I.)

18

Code 39169021 – Rev. 0

Page 1 of 1

123

IB SYSTEM

TECHNICAL MANUAL Spare parts

14.

SPARE PARTS 1 – Component plate for CCU N23 2 – Component plate for CCU N33 3 – Component plate for Digital System 4 – Variac module 5 – Options 6 – I.I.'s, TV camera and monitors 7 – Toshiba / Thomson cables and I.I. electronics 8 – Philips cables and I.I. electronics

(Rev. 7)

125

IB SYSTEM

TECHNICAL MANUAL Spare parts

1 – Component plate for CCU N23

IB SYSTEM

Ref.

VSM code

Description

1

5816112000

Power supply board A1

2

5816101000

Table – Generator interface board A2

3

4492819100

Component plate Transformer T1

4

4695426300

CCU N23 50Hz 625 lines

4695426400

CCU N23 100Hz 625 lines

5

2300990500

A1 board fuse F1 (1.25A T)

6

2300990600

A1 board fuse F2, F3 (0.5A T)

7

2300990700

A1 board fuse F4 (0.2A T)

8

2300990800

A1 board fuse F5 (2A T)

126

Note

(Rev. 7)

TECHNICAL MANUAL Spare parts

(Rev. 7)

127

IB SYSTEM

TECHNICAL MANUAL Spare parts

2 – Component plate for CCU N33

IB SYSTEM

Ref.

VSM code

Description

1

5816112000

Power supply board A1

2

5816112200

Table – Generator interface board A2

3

4492819100

Component plate Transformer T1

4

4695427800

CCU N33 1kx1k

5

2300990500

A1 board fuse F1 (1.25A T)

6

2300990600

A1 board fuse F2, F3 (0.5A T)

7

2300990700

A1 board fuse F4 (0.2A T)

8

2300990800

A1 board fuse F5 (2A T)

128

Note

(Rev. 7)

TECHNICAL MANUAL Spare parts

(Rev. 7)

129

IB SYSTEM

TECHNICAL MANUAL Spare parts

3 – Component plate for Digital System Ref.

VSM code

Description

1

5816112000

Power supply board A1

2

4492819100

Component plate Transformer T1

3

IB SYSTEM

Note

POD Interface board

4

2300990500

A1 board fuse F1 (1.25A T)

5

2300990600

A1 board fuse F2, F3 (0.5A T)

6

2300990700

A1 board fuse F4 (0.2A T)

7

2300990800

A1 board fuse F5 (2A T)

130

(Rev. 7)

TECHNICAL MANUAL Spare parts

(Rev. 7)

131

IB SYSTEM

TECHNICAL MANUAL Spare parts

4 – Variac module

IB SYSTEM

Ref.

VSM code

Description

1

7216104000

Variac module assy

2

6616104300

Variac assy

3

4492818800

Variac module transformer T2

4

4492818900

Variac module transformer T3

5

4165121100

Variac module rectifier V1

6

4291516800

Variac module relais K4, K5, K6

7

4291516900

Variac module contactor K1

8

2300975500

Variac module fuse F1 (3A T)

9

2300975500

Variac module fuse F2 (3A T)

10

2300974600

Variac module fuse F3 (0.3A F)

11

2300973600

Variac module fuse F4 (2A T)

12

2300974700

Variac module fuse F5 (0.4A F)

13

2300975500

Variac module fuse F6 (3A T)

14

2300973100

Variac module fuse F7 (0.5A F)

15

4565139600

Variac module fuse holder

132

Note

(Rev. 7)

TECHNICAL MANUAL Spare parts

(Rev. 7)

133

IB SYSTEM

TECHNICAL MANUAL Spare parts

5 – Options

IB SYSTEM

Ref.

VSM code

Description

1

5816107200

16” I.I. Magnetic field correction board

2

6216102300

Cable for magnetic field correction board

3

7216110000

Keyboard assy for SAG4/SAG6 SFD

4

6216110100

Push button assy

5

2374862900

Lamp

6

4192005400

Potentiometer

134

Note

(Rev. 7)

TECHNICAL MANUAL Spare parts

(Rev. 7)

135

IB SYSTEM

TECHNICAL MANUAL Spare parts

6 - I.I.'s, TV camera and monitors Ref.

VSM code

Description

1

4695426200

CCD camera N23

4695427700

CCD camera N33

6695491600

Toshiba I.I. tube 9” STD

6695493500

Toshiba I.I. tube 9” STD for Apollo

6695491700

Toshiba I.I. tube 12” STD

6695493700

Toshiba I.I. tube 12” STD for Apollo

4695492900

Philips I.I. tube 12" STD

6695491800

Toshiba I.I. tube 9” HX

6695493600

Toshiba I.I. tube 9” HX for Apollo

6695491900

Toshiba I.I. tube 12” HX

6695493800

Toshiba I.I. tube 12” HX for Apollo

4695492000

Toshiba I.I. tube 16” HX

4695493900

Toshiba I.I. tube 16” HX for Apollo

4695424100

Monitor NF 17” 50Hz

4695424200

Monitor NF 17” 100Hz

4695425700

Monitor NF 21” 50Hz

4695425800

Monitor NF 21” 100Hz

2

3

G

IB SYSTEM

Note

NOTE: To order Spare Part for monitors, please provide information about type of board required, model and serial number of the specific monitor.

136

(Rev. 7)

TECHNICAL MANUAL Spare parts

1

2

3

(Rev. 7)

137

IB SYSTEM

TECHNICAL MANUAL Spare parts

7 – Toshiba / Thomson cables and I.I.'s electronics

IB SYSTEM

Ref.

VSM code

Description

1

7216102500

Cable assy for I.I. 9”-12” STD and N23 camera

2

7216101500

Cable assy for I.I. 9”-12”-16” HR and N23 camera

3

7216112800

Cable assy for I.I. 9”-12”-16” HR and N33 camera / DIVA-D Digital System

4

7216109200

Monitor NF cable assy for Mercury / Symphony / Vision / Viromatic

7216112200

Monitor NF cable assy for Apollo

5

4591835200

75 ohm terminator

6

6216102800

Connection cable for I.I. Thomson 9”-12” STD/HR

7

6216102900

Connection cable for I.I. Toshiba 9”-12” STD/HR

8

6216109600

Connection cable for I.I. Toshiba 16” HR

--

6695495000

HV power supply type VP33457 for I.I. 9”-12”

--

4695492700

HV power supply type VP33444 for I.I. 16”

138

Note

(Rev. 7)

TECHNICAL MANUAL Spare parts

1

2

3

4

5 6

7

8

(Rev. 7)

139

IB SYSTEM

TECHNICAL MANUAL Spare parts

8 – Philips cables and I.I.'s electronics

IB SYSTEM

Ref.

VSM code

Description

1

7216102500

Cable assy for I.I. 9”-12” STD

2

4695493000

HV power supply for I.I. 9”-12”

3

4695493200

Voltage converter board 24V to ±15V for I.I. 9”-12”

4

4695493100

HV power supply interface board for I.I. 9”-12”

5

7216109200

Monitor cable assy

6

4591835200

75 ohm terminator

7

6216109700

Connection cable for I.I. Philips

140

Note

(Rev. 7)

TECHNICAL MANUAL Spare parts

1 2 3

4

5

6

7

(Rev. 7)

141

IB SYSTEM

TECHNICAL MANUAL

THIS PAGE IS INTENTIONALLY LEFT BLANK

IB SYSTEM

142

(Rev. 7)

Cod. 6916000203_Rev.7

VILLA SISTEMI MEDICALI S.p.a. Via Delle Azalee, 3 20090 Buccinasco (MI) - ITALY Tel. (+39) 02 48859.1 Fax (+39) 02 4881844

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