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NAME/ PAY#: COURSE: XR012 STENOSCOP 2 6000/9000
Series
REGION/COUNTRY: INSTRUCTOR(S):
SERVICE MANAGER: COURSE DATE:
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A
B
C
E
D
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NUMEROS
POS COMPOSANTS TYPE MODELE (USA)
A FRAME CONTROL CONSOLE 828 490 ZF0XCST2
B X R HEAD 828 520 ZH0HTST2
C COLLIMATOR for IMAGER 16 cm (6) 828 751 G 015 Z0A16ST2
22 cm (9) 828 752 G 015 Z0A22ST2
D CASSETTE HOLDER for IMAGER 16 cm (6)
24 x 30 cm 830 534 G 015
9,5 x 9,5 830 535 G 015 Z0L16ST2
CASSETTE HOLDER for IMAGER 22 cm (9)
24 x 30 cm 830 536 G 015
9,5 x 9,5 830 537 G 015 Z0L22ST2
E IMAGER 16 cm (6) 860 926 P 015 ZI016ST2
22 cm (9) 860 926 P 025 ZI022ST2
16cm (6) CDRH 860 926 P 035 ZI016ST2
22cm (9) CDRH 860 926 P 045 ZI022ST2
F MONITORS CART
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3A3 DIAPHRAGMES 2 828 978 G025
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32 CONNECTION THE SUPPLY
The mobile is factory wired for :228V/50Hz single phase networks (Europe)
OR 208V/60Hz single phase networks (U.S.A.)
A frequency adaptation on site requires adaptations in the mobile but also in the imager, memory and monitor
For the mobile, proceed as specified hereunder.
321 NETWORK ADAPTATION OF THE MOBILE
3211 9TR1 TRANSFORMER
The network adaptation is made at the transformer 9TR1 (diagram 110)
Connect wires marked A and B, and jumpers marked C and D as shown in the hereunder chart according to the
mains voltage and frequency.
RESEAU MAINS SUPPLYFil marqu FREQ
240V 228 V 220 V 208 V 200 V *120V
*108 V
*100V
Marqued wire
BORNES 9TR1 9TR1 TERMINALSAdaptation 50Hz 6 6 6 6 6 6 6 6
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Locking rood
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322 SUPPLY CABLE
For the mobile units wired for 208V(USA), the supply cable is delivered from the factory with its plug.
For the mobile units wired for 228V (Europe), the supply cable is delivered without a plug.
According to local regulations, connect a plug (min 16A single phase + earth) as follows :
blue wire : 228V
brown wire : 228V
yellow/green wire : earth
33 INTERCONNECTION
Connect the cable coming from the mobile unit to the plug 9PL1 situated on the back of the monitor holder.
Screw the fixing device in a clockwise direction.
Connect the supplementary equipotentiality cable to the earth terminal bar (CEI only).
Connected the network supply cable to the socket provided at the installation.
34 EQUIPMENT INSTALLATION
Put the apparatus under tension with the switch at the back of the monitor cart.
341 UNBLOCKING THE COLUMN
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M d l 1
Module 2
Module 3
Module 4
Module 5Module 6
Module 7
Module 8
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B
A
C
F
E G
ILLUSTRATION 11
Position de transport
Driving position
Classification
Appareil de type B ayant un degrapproprideprotection contre les chocs lectriques, en cequi concerne notamment
. Les courants de fuites admissibles (
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5. CHARACTERISTICS
5.1 MECHANICAL SPECIFICATIONS
5.1.1 Certification and identification labels
(see illustration 11)
A Tube housing assembly
B Image intensifier
C Xray control
D Cassette holder.
E F G Classification, certification, caution : illustration 11
5.1.2 Mobile Unit
Length : 249 cm (98) with full extension of Carm holder.
transit position
Width : 80.4 cm (31.7).
Height : 176 cm (69.4) with 16 cm (6) II (transit position)
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5.1.3 XRay tube head and collimator
The Xray tube HD 281 is in a STENIX housing of the following dimensions:
Width : 16.5 cm (6.5).
Height : 42.5 cm (16.7) with 22 cm skin guard
52.5 cm (20.7) with 32 cm skin guard (USA and CANADA)
Length : 39.8 cm (15.7).
The tube has a double focus, 0.5 x 0.5 mm and 1.8 x 1.8 mm and a stationary anode.
The 0.5 mm focus is selected to provide the best possible resolution in fluoroscopy.
The 1.8 mm focus provides good radiographic resolution
The red point on the Xray tube head shows the localization of the focus.
Leakage technique factor : 110 kVp 1 mA.
Filtration : HVL = 2.65 mm Al minimum at 71 KV
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5.1.8 CArm rotation about the horizontal axis
Rotation viewed from control console side : 290oclock wise.
120ocounterclock wise
Manual lock.
5.1.9 Orbital rotation of CArm
Image Intensifier 16 cm (6) and Stenoscop L EMotion: 115o(25obeyond vertical); manual lock.
Image Intensifier 22 cm (9)Motion : 105o(15obeyond vertical); manual lock
5.1.10 Dimensions and weight of the TV monitor
45.7 cm (18) width x 36.8 cm (14.5) high x 35.6 cm (14) depth screen diagonal 48 cm (19)
20 kg (44 lbs)
5.1.11 Radiographic cassette holder and grid
4 types are available, for all combinations
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5.1.12 Environmental specification :
complete unit, all options included
Operating temperature : 10oC to 40oC non condensing
Operating temperature variation : up to 10oC/HR permissible.
Storage temperature : 10oC to 70oC non condensing
Transportation temperature : 10oC to 70oC non condensing
Pressure : in operation : 700 to 1060 mB
Storage and transportation : 500 to 1060 mB
5.1.13 Heat dissipation:
maximum heat dissipation into the surrounding air.
For unit with two TV monitors and a video imager.
Standby : 475W
In fluoroscopy : (110 kV 4.5 mA) 1250W In radiography : 5800 W
5.1.14 Transport on inclines
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5.2 ELECTRICAL SPECIFICATIONS
5.2.1 Generalities.
The power supply requirements are 100, 108, 120, 200, 208, 220, 228, 240V (switched at installation).
Tolerance +/10%, 50/60 Hz single phase.
MAXIMUM LINE IMPEDANCE
100 108 120 200 208 220 228 240 Volts
0.14 0.16 0.20 0.33 0.36 0.40 0.44 0.48 Ohms
Automatic line voltage compensation.
Typical line current for different conditions of use are as follows (tolerances are in the range of +/ 20%).
Currents listed below are for the basic generator unit equipped with two TV monitors, one memory and a
video imager.
Line current
A) For 208 V, 50 or 60 Hz with a line resistance of 0.36 Ohm (6% line regulation) 20 Atype TT fuses (slow blow)
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C) For 100V and 108V 25 A fuses Type TT (slow blow)
The earth leakage current, is in accordance with standard IEC 60127, (class 1, type B).
In the US, earth leakage current complies with 60 NFPA requirements.
Limits of utilization see 5.4.2
Note : Fuses of a rating higher than recommanded above may be required in some countries.
The unit is furnished with a power cable of adequate length.The replacement of this cable by a longer cable may produce a non compliance
with standard and increase the earth leakage current.
The use of an extension cable is not recommended : if one must be provisionally
used, the section of wires be 2.5 mm2minimum and an earth ground wire is
mandatory.
The specified impedance line correspond to the end of the extension cable (female
plug).
Protection fuses
All protection fuses are only accessible by service engineer. See Service manual.
CAUTION
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5.2.2 Image intensifier
The power supply is a high stability solid state model.
Single field dual field
Specification 6 Normal 9 Magn 6
Typical conversion factor cd(m)2
mRs150 180
Typical contrast ratio 20/1 21/1 22/1
Input field diameter 15 cm 22 cm 16 cm
Typical central resolution 44 lp/cm 44 lp/cm
51 lp/cm
Builtin grid 90L/inch 90 L/inch
8:1 10:1
Radiation safety fully shielded
Anode voltage 30 kV
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5.2.4 TV monitor
Horizontal scan 525/625 lines (60/50 Hz)
Vertical scan 100/120Hz (50/60Hz)
Interlace 2:1 (50.8 cm)
Image tube 19diagonal
Brightness and contrast controls on rear panel of monitor
Caution :
The video outputsof the unit or options must not be considered as output signals.
It is strictly prohibited to use them for any purposes other that those designed by the manufacturer.
5.2.5 DSM Memory
DSM Processor equipped with storage capacity of 8 (volatile) images or 600 images accordingto option.
Power supply (internally provided).
Processing in 12 bits
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5.3 MAXIMUM DEVIATION DATADEVIATION DATA OF THIS PARAGRAPH ARE PROVIDED FOR COMPLIANCE TO SOME
STANDARDS
Factor Range Deviation Measurements Basis
Rad kVp 4055 kV +/20% Direct kVp measurement is not
55110 kVp +/10% possible. See 5.3.2
Rad mAs 0.16 to 160 mAs +/(10% + 0.2 mAs) mAs meter. See 5.3.2
Fluoro kVp 40 50 kV +/ 20% Direct measurement of kV is not
55110 kVp +/10% possible. See 5.3.2
Fluoro mA 0.16 mA+
/(10% + 0.2 mA) mA meter. See 5.3.2
Fluoro time 4 min.30 +/15 s Stop watch.
In the radiographic mode, all mA values are typical.
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Product of exposure time x current (mAs) : The product of exposure time x current is measured by means of
an mAs meter connected in the secondary circuit of the HV transformer.
A correction must be done to take the high voltage capacitor charge into account (See
service manual).
Fluoro time : the time of a continuous fluoro exposure, between timer reset, until the buzzer switches on.
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5.4 GENERAL RATINGS
5.4.1 Radiographic mAs meter
0.16 0.2 0.25 0.32 0.4 0.5 0.63 0.8 1 1.3 1.6 2 2.5 3.2 4 5 6.3 8
10 13 16 20 25 32 40 50 63 80 100 130 160 mAs.
5.4.2 Radiographic kVp and mA
A. At full power (line voltage as in 5.2.1 )
Nominal power 3 kW (100 kV 30 mA 0,1s)
40 to 110 kVp in steps of 1 kVp.
mA linked to kVp in six steps as follows:
40 to 49 kVp : 60 mA
50 to 59 kVp : 55 mA
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C. Reference current time products (mAs)
4 mAs 70 kV 41 mA 0.0975s
3.2 mAs 100 kV 30 mA 0.1067s
3.2 mAs 110 kV 30 mA 0.1067s
N.B. the loading is determined as the result of the mAs product integration.
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7.0
6.0
5.0
4.0
3.0
2.0
1.0
3.853.9
2.7
2.3
1.4
mA
COURBES kV mAkV mA CURVES
ILLUSTRATION 12
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Limits of utilization with a 100V mains
If the Stenoscop is configured for a 100 Volts power line, the mains circuit breaker may open during
radiography if technique factors above the following are preset :
110 kV 80 mAs
88 kV 100 mAs
70 kV 125 mAs
50 kV 160 mAs
If technique factors higher than above are required, the unit must be connected to a supply voltage of
120V (at reduced radiographic power) or 200220240V, at nominal power.
5.4.3 Fluoroscopy kVp
Manual : 40 to 110 kVp in steps of 1 kVp.
Automatic : Continuously variable between 40 and 110 kVp.
kVp linked to mA according to the curves shown on illustration 12 controlled by the amplitude of the
video level from the TV camera.
The video signal is measured in a circular window having a factoryadjusted diameter.
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Automatic: The mA values are connected to the kVp values according to the curve in illustration 12.
The selection HIGH QUALITYor NORMAL DOSEhas a twofold purpose; it selects the I.I.
entrance dose and switches over the parameters from curve 1 to curve 2.
In the HIGH QUALITYmode, the mA are limited in the same way as in MANUALmode.
When in automatic or manual modes, the technique factors are restricted as shown on the curve 4, if the
temperature limit is reached at.
5.4.5 Fluoroscopic Timer
The fluoro timer is a 05 minute electronic timer with an audible termination signal and reset key.
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0
8
16
24
32
40
48
56
0 1 2 3 4 5 6 7 8 9 10
K Joules
COURBES DECHAUFFEMENT ET DE REFROIDISSEMENT DE LANODE
HEATING AND COOLING CURVES
ILLUSTRATION 13
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5.5 GENERATOR RATING AND DUTY CYCLEillustrations 13 and 14
500W maximum in fluoroscopy, up to maximum tubehead temperature interlock, 150W until bellows
compensation safety.
3.600 mAs per hour at 110 kV maximum allowable rating with 30 sec rest between rad exposures.
Depending on ambient temperature, tubehead position, and sterile drapes, thermal interlock may occur
at this rating.
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ILLUSTRATION 4 ILLUSTRATION 5
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1.3 TV MONITORS AND MOBILE CART
(See Caution2.2)
illustrations 4 and 5
The TV monitors are mounted on the mobile cart.
1 XRay emission control lamp.
2 DSM image processor.
3 Hand held infrared remote control secured on the unit (on a magnetic slide).
4 Infrared detector.
5 Alphanumeric keyboard (DSM controls).
6 VTR (option).
7 Video imager (option).
8 Video imager (paper) (option).
9 ON/OFFpower switch (on the rear side of the mobile cart).
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CHAPTER 1 X-RAY TUBE HD281
SECTION 1
DESCRIPTION
11 General
The HD281 x-ray tube is fitted with xray tube head for Stenoscop II.
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13 Dimensions
Reference axis
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SECTION 2
CURVES CHARTS
21 Electron emission curves
Focal spot :0.5 Voltage
Ano
de
inpu
tintens
ity
mAV
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22 Single load rating
Focal spot : 0.5 Voltage
Exposure time
Watts
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23 Modulation transfer function
These curves show typical performances.
To get minimum values (according to IEC Standard 336/1982), multiply the frequency by
0.9 (width) or 0.85 (length).
Standard magnification : 2
Focal spot : 0.5
.2
.4
.8
1
.6
F.T.M.
Width
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To get minimum values (according to IEC standard 336/1982), multiply the frequency by
0.95 (width and length).Standard magnification : 1.3
Focal spot : 1.8
21
.2
.4
.8
1
0
.6
53 4
F.T.M.
Spatial frequency (lp/mm)
Width
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24 Anode Heating and cooling curves
k joules
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ILLUSTRATION 1
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Please note the original version of this manual was written in French.
1. DESCRIPTION
1.1 MECHANICAL STRUCTURE
see illustration 1
1 Xray head assembly
Comprises the Xray tube, the high frequency Xray generator, a motorized collimator and a patientguard of clear plastic.
2 Carm orbital movement brake.
3 Carm slide handles.
4 Carm rotation brake
5 Horizontal movement brake.
6 Wigwag movement brake
Note: THIS APLLIES TO ALL BRAKES.
To brake, push the brake handles forward ( toward the CArm); to release, draw the brake handles
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Position A
13 Rear wheels locking footswitch : see illustration 2
Position A. Rear wheel brakes locked.
Position B. Rear wheels moving freely.
Position C. Rear wheels locked for lateral movement.
Also turn steering handle (8) 90o.
14 Interconnecting cable between mobile unit and monitor cart, wound on its support. The plug fits on a
hook under the cable support.
15 Rad Fluoroscopy handswitch.
ILLUSTRATION 2
ILLUSTRATION 3
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Stenoscop
A
D
B
1
2
3 315
44 4
5
6
7
8
9
10
14
2
22
23
24
21
20
ILLUSTRATION 3
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1.2 CONTROL CONSOLE
illustration 3 back of manual
The controls are ordered logically as follows :
A) Fluoro and Rad controls (these controls are repeated on both sides of the unit) and
C ARMUP/DOWN motion.
Footswitch and handswitch located on the right hand side of the unit can also be used.
B) Image system (collimator, camera, TV monitors).C) Modes of operation and Xray parameter selection
D) Fluoro timer and Xray elapsed time totalizator
For detailed description of the controls, see following pages
1.2.1 FLUORO AND RAD CONTROLS
illustration 3
(1) Xray exposure control .
Fluoroscopy is initiated by pressing this key when a fluoro mode has been selected.
A di hi i i iti t d b i thi k h th di hi d h b
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1.2.2 MONITOR AND COLLIMATOR
illustration 3
Note on collimator operation.
In the radiographic mode, the Xray field is limited by a round aperture of either 9.5or 30 cm, dependingon local regulations.
In the fluoroscopic mode, the XRay field is limited by a round aperture of a size corresponding to the fieldof the image intensifier.
Two pairs of rotatable and separately adjustable shutters, one of them semitransparent, are provided.These shutters are active both in fluoro and in radiography.
WARNING!
With 16cm image field :
Switching from Fluoro to Rad does not change the position of the collimator shutters but the
keys collimator open(22 and 23) start blinking to warn the user.
Touching these commands will open the collimator immediately to the full cassette size and thekeys light up permanently.
With 22cm image field :
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1.2.3 MODES OF OPERATION AND XRAY PARAMETER SELECTION
illustration 3Modes of operation
9 Standard radiography
10 Singlepulse fluoroscopy .
Only one XRay pulse is generated, the duration of which is controlled by the acquisition timeand image processing of the memory.
11 High quality FLUOROSCOPY.
This operating mode can be used simultaneously with modes 10, 12 or 13 for passing fromNORMAL DOSEfluoroscopy to HIGH QUALITY fluoroscopy.This operating mode is active when the push button is lit up.
12 Pulsed fluoroscopy.
13 Standard fluoroscopy.
18 Fluoro manual
Key lit : manual kV/mA selection
Key unlit : automatic kV/mA selection.
When going from automatic to manual fluoro mode, the last kV and mA values in automaticmode are carried over to manual mode.
Xray parameter selection
17 mA or mAs selection : (keys and )
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ILLUSTRATION 4 ILLUSTRATION 5
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1.3 TV MONITORS AND MOBILE CART
(See Caution2.2)
illustrations 4 and 5
The TV monitors are mounted on the mobile cart.
1 XRay emission control lamp.
2 DSM image processor.
3 Hand held infrared remote control secured on the unit (on a magnetic slide).
4 Infrared detector.
5 Alphanumeric keyboard (DSM controls).
6 VTR (option).
7 Video imager (option).
8 Video imager (paper) (option).
9 ON/OFFpower switch (on the rear side of the mobile cart).
TELECOMMANDE DSM
ILLUSTRATION 9
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MODULE 1
TELECOMMANDE DSM
1 2 3
4 5 6
7 8 9
10 11 12
13 14 15
16 17 18
ILLUSTRATION 9
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ILLUSTRATION 4 ILLUSTRATION 5
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1.3 TV MONITORS AND MOBILE CART
(See Caution2.2)
illustrations 4 and 5
The TV monitors are mounted on the mobile cart.
1 XRay emission control lamp.
2 DSM image processor.
3 Hand held infrared remote control secured on the unit (on a magnetic slide).
4 Infrared detector.
5 Alphanumeric keyboard (DSM controls).
6 VTR (option).
7 Video imager (option).
8 Video imager (paper) (option).
9 ON/OFFpower switch (on the rear side of the mobile cart).
ILLUSTRATION 7
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ILLUSTRATION 7
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2. OPERATING INSTRUCTIONS
2.1 TRANSPORT POSITIONSee illustration 7
When moving the unit to or from a room, place the unit in the following position :
Xray axis vertical, with the Image Intensifier up.
Center wigwag movement
Retract the Carm fully toward the console
Bring the Carm to the lowest position (this movement must be accomplished before turning thepower off).
Lock all movements
Turn power off (before disconnecting cables)
Disconnect cables and wind them on their supports
Set rear wheels locking footswich in the free position (pedal horizontal).
WARNING !
This unit weighs approximately 500 lbs.
Care must be used when transporting from one area of use to another. Failure to follow these precautions
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THE MONITOR CARTS OF STENOSCOPS OF THE 6000 AND 9000 SERIES
ARE NOT INTERCHANGEABLE WITH THOSE OF THE STENOSCOP LE.
IN CASE OF INTERCHANGE OF MOBILE CARTS (POSSIBLE IF TWODIFFERENT UNITS WERE ON THE SAME SITE), NO DAMAGE WILL
OCCUR, BUT IT WILL BE IMPOSSIBLE TO SWITCH THE UNIT ON.
Plug mains supply cable no10 (illustration 5) from monitor cart into suitable mains outlet.
Press the power ONswitch on the TV monitor cart (item 9 illustration 5).
The green READY indicator light comes on showing that power is on (item 4 illustration 3).
REMARKS : PREHEATING TIME
When the unit is powered ON, a delay of about 1 minute is required by the memory to execute its boot
sequence.
During this delay, XRay emission is not possible.
The monitors also require a delay of about 1 minute in order to display a workable image.
The video imager preheating delay is about 1 minute during which time making a hard copy is not possible.
A buzzer is actuated at the end of this delay.
WARNING
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Stenoscop
A
D
B
1
2
3 3
15
44 4
5
6
7
8
9
10
14
2
22
23
24
21
20
ILLUSTRATION 3
TELECOMMANDE DSM
ILLUSTRATION 9
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MODULE 1
1 2 3
4 5 6
7 8 9
10 11 12
13 14 15
16 17 18
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2.3 FLUOROSCOPIC MODES OF OPERATION
2.3.1 FLUOROSCOPY WITH AUTOMATIC BRIGHTNESS CONTROL
See illustration 3end of manual
Personnel should wear protective lead aprons and gloves, and should remain, as much aspossible, behind suitably positioned mobile lead protective screens during the examination.
Select fluoro mode (illustration 3 key 13). The key lights up.
Check that the manual fluoro selector is released. (illustration 3 key 18 is off).
Fluoroscopy can be initiated in 3 different ways :
press the fluoroscopy footswitchpress XRay control keys on the control console (illustration 3 key no1)press XRay handswitch.
An orange coloured lamp secured on the monitor cart comes on during XRay emission.
kV and mA are adjusted automatically for consistent image quality.
Releasing the control key interrupts the fluoro sequence. The last image remains on the TV screen.
mA and kV are permanently displayed on the operator console.
The last mA and kV parameters remain displayed when fluoroscopy is interrupted and are retained.
If required, collimate the image by pressing the opaque and semitransparent shutters control(illustration 3 keys 22 and 23), .
ILLUSTRATION 9ILLUSTRATION 10
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2.3.2 FLUOROSCOPY WITH MANUAL kV/mA CONTROL
See illustration 3
Select the fluoro mode of operation (illustration 3 key 13); the key lights up.
Press MANUAL (illustration 3 key 18); the key lights up
Reset fluoro timer (illustration 3 key 6) to zero.
Select kV (illustration 3 key 15). kV is displayed on the console.
Select mA illustration 3 (key 17). mA is displayed on the console.
Start fluoroscopy with key no1, with footswitch or with handswitch and adjust kV and mA to
obtain the best image. Follow the procedure outlined in the previous paragraph for the rest of the operation.
To return to the automatic brightness control mode, again press the manual selector key.
In manual mode, the cameras automatic gain control does not operate.
The manual mode may thus not be appropriate to view very large objects with heavy Xrayattenuation.
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2.4 RAD
BEFORE USING THE STENOSCOP IN THE RADIOGRAPHIC MODE OF
OPERATION, THE OPERATOR SHOULD VERIFY :
1. That the cassette holder be correctly attached.
2. That there is a film present in the cassette, appropriate to the intended use.
3. That the cassette be appropriate to the intended use and inserted into the
cassette holder before the exposure.
See illustration 3
Fix the cassette holder to the face plate of the image intensifier (with or without grid).
See illustration 8.
Introduce a cassette with film in the cassette holder.
Select the RAD mode of operation illustration 3 key 9.
The mAS display lights up.
Select kV (illustration 3 key 15).
Select mAs (illustration 3 key 17).
Open the collimator shutters completely by pressing the flashing keys (illustration 3 keys 22
WARNING
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ILLUSTRATION 3
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A
D
B
1
2
3 3
15
44 4
5
6
7
8
9
10
14
2
22
23
24
21
20
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Group 1
TELECOMMANDE DSM
ILLUSTRATION 9
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MODULE 1
1 2 3
4 5 6
7 8 9
10 11 12
13 14 15
16 17 18
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Doubler
Doubler
H. V.Transformer
FromConverterModule 4
6A1
MA / MASMEASURING CKT
Measured mA (FL)
Measured mA G(Rad)
6A11000 / 1
Divider KvMeasuring
Ckt
Measurto 3A
LS SS
Rad (+)
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Op 55, G32,G33
3A3PRX
3A19SEXP
Arc Det Op46Monostable G32,
G30 ,CounterG31
OSC G79
Integrator Op 97
3A19PRI
3A19OX 3A19
(Shuts downConverter
after 4
arcs)
Indicates
shutdown
Compare
Op114Op102Op122
CompareAdder
3A19DemxOp132
C137
Op1806A1
MeasuredKv
3A9 Selected Kv/20
3A19Clock
FL Timer
CR4
a5 3A19TROU CLQ
INT4 CLQ
KV* = ( KV 1 ) 1.120 20
Op114Select KV/20
KV Error
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PRX PRX
PR1
DEMX
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G112, 116,118 Logic
G118, 113, 117, 115 Logic
G119, 120 Logic
3A12 DEMX
SEXP
PRI
3A12 TROU CLQ
G216, G113,Q189, Q178
3A26 +12V & SX
To Q181, Q259, Q303, Q238
Xray Button BPCL
FS
Rad
(3A12) 120 Kv
(3A12) INT4 CLQ
(3A26) Stop MAS
Sec Bellows
G121A
Q
Q_
Clock
G128555 Clock Timer
BistableFlipFlopG114, G117G115, G155
SEXP 3A12, 3A5, 3A3
PRE 3A26
SYXSC 3A26
Closed if
memory
interface
is not used.
S76A
Q238Q235
MSI XR 0354
Rad
Clock
Q303
Q256
Q300
Q259
G122D
G122AQ281Q278
TR313
TR269
TR291
To converter4CR7 (Preset C3 & C4)
TR248
To converter 4CR4 (Select all capacitors in (Rad)
To converter 4CR6 Main SCR
To converter 4CR1 Main SCR
OX
Signal through memory Interface
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120kV
PRE SYX SC
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PRI
GR RAD
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Sample & HoldA71 , 82
RX(From TVcamera) KV/20 Aut
(To 3A7)
Integrator A73
A74B
A121Comparators
R67Threshold
Ref. R65
Counters G143, 144
158, 159, 160, 161
(3A12) PRX CP
(50 Hz)
Decoders G184,
185, 186, 187
GainR66
+V
+ V
DisplaysDS 15 (.01)DS 16 (.1)DS 17 (1.0)DS 18 (10.0)
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Logic Ckts& Latch
G70
UpdownControls
G48, 31
Latch G69F L
1KHzOJC G148(3A19)
OX 4 bit comparatorsG108, 126
SC
Latch G97RadSC
Clock
Clock
UpdownCountersG138, 125
Auto= closedSm49
Sm31, 32Kv(Updown)
To 3A9
WR
G90
A / D
300 KHzTo G150
AnalogKV/2
from 3A5& TV Camera
3Hz & 30 HzOSC &
2Sec delay
(3A9) 40110KvLimits
SC(3A9)
A>B A>B
(3A5)
Hold Kv
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PL1 PL1 +5V
+5V
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45A
+5V Sm26
Sm33
Sm35
Pulsed FL
HLC
ER
Rad Gr SC
G150
Reset
Clock
Inhibit
300 kHz from G90
161310
2
4
7
3
8 15
14
+5V
+
+12V
+12V
G137 A to F
+12V
GR
3A3, 3
ER
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G21G20Lim.110
G18G19Lim.40
FC110
3A7
Logic CktsFC40
Comparators
3A9 CONSIGNE kV / mA
G68DAC
EPROM
Dis.kV
G67
REFERENCE VOLT.kV/20
G138G172
G22
BCD to DECIMAL DECODER
U
D
C
BCD to 7 Segm. DECODER
REFERENCE VOLT.mA Rad
2A1MODULE
G
888
kV
3A12kV/mA
3A26
+5vSm35
Logic CktsG122, Q141
To Module 8TVCamera aperture
3A26 FILG94
DAC
EPROM COUNTER
REFERENCE VOLT.
mA FL
G120 G136G137
EPROM
2A1MODULE
S140B
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KV/MA TapesQ108, 110
AdderA152
A284Amp
A138Integrator
(Reduced Power)
RP
Integ. GainQ83, Q217
3A12Measured MA(Rad)
3A9KV/MAfrom G22
S133B
0= .16 to 5mAs1= 5 to 160 mAs
3A9
3A9mAs Ret
A180Compare
G188,
184,187
AmpA214
3A19Stop mAs
Fil.Ret
Q287A 85%KV
& PRE
Pre heatQ216 (Rad)
Safety Delay (Rad)
Q193, 194, 197,G184 187
Pre
RP
3A3 Powerreduction(Closed)
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SYX SC
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G155180 HzOSC
Q206
SelectorLogic
G182,183Q124
Pre amp & AmpQ176, 129,162, 122
Rad
FLIntegrator
A234,Q265Q266
CompareA237 Fil Ref
(A214)
RMS
Low PassFilter A282& Multiplier
A278
n2 FL/RadSelectorQ213 A & B
LimitersQ125, 128Q123, 121
Current
Sense
DriversQ21, 20,
15, 11
VoltageSource
5TR1, 5CR3,C3 & C4
To Xrayhead
Fil. Trans.
5A1
n
C3
+V
VoltageSource5TR15CR3
+
C4
Q20
RadRad
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Rad
2Hz OSCG35(3A5) PRXCP
Timer Display
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G6950HzOSC
CountersG38, 37
LogicCktsG36
457(3A19)
Stop ConvtSCRSR217
PRX
G35
Sm14
426LED FLASH
LogicCkts
G74,75DS175Buzzer
RAD
G39
PRX
Sm26
Sm 7
BPCL(3A19)
TimerReset
Module G2A1
XrayExposure
3A12
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PRX
457
PRX
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Q218Q211
Q249Q241
7M3
7M2
Opaque
Collimators
SemitransparentCollimators
7M5Q189Q190
Circular Coll9TubeonlyRad
G180, 163181, 179,
164, 166, 158Logic Ckts
G168, 157,169,
160, 159,
164, 156Logic Ckts
FC Sc1
Rad
FC GR1
(Close)Sm15
Sm16 (Open)
7M1 CollimatorRotation
Sm11 (CCW)
Sm12 (CW)
12V
+12V
(Close)Sm14
(Open)Sm13
FC GR2
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Maximum opening limit switches are not actuated, FC SC1 (Fluoro) FCGR1 (Rad) console settings are com-
patible with operating mode selected (Fluoro or Rad).
DelayLogic Ckts
(3A7)Auto
(3A7)ER
Q145
Module 8 TV Camera
Auto Gain Control (CAG)
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DelayLogic CktsG161, 162,170, 171
(3A7)ER
(3A5)Sexp
(3A7)F110
R239C235
Syx Sc(3A19)
Q148
Q512G166
S133D
G166
S133C
Video Blank
Beam (Max)
+24v
Q149Zoom (Mag mode)
Zoom Z1
Q132
S133A
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F110
Syx Sc
Syx Sc
REV 1
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Mod D (2A3) 3A5
Sm22Sm23
Sm5Sm9
3A7Mod G (2A1)
Logic CktsG16, Q17
Q25, Q30
DriversQ28
Q33
K34
K44
1A1 Board
Trans5TR1
K6
Power
K34, K44PolarityReverse
1M1Up/Down
Drive Motor
REV 1
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REV 1
Q195
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Q
Q
G140DQ55
G140EQ57
G106
+24V
+24VQ194G140F
Q195G140A
Sm10
Sm9
H Sweep24
23V Sweep
To Module 8TV Camera
G163BQ151
G163C
Q156
Sm8
Sm7
12V
12V
Monitor 1
9A1
K7
K5
REV 1
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REV 1
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REV 1
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REV 1
TP2
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VRI +18V24V.
R1
AGC DelayMNI
R9
AGC (On/Off)
To Camera Video Amp
GI
VR2
+24V 15V
+10V
DS3
G3
G3
NOR R2
MAG R3MAI G3
CR3To image tube
15V
TP2
TP7
TP9
TP8
TP3TP4
REV 1
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Power Supply (PL1)
REV 1
TP1 ImV=InA TP4
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Q1,2,3 & 4Q5, 6, 7MA11,2
MX11,2,3
NewviconTargetSignal
R1Black Level
Adjust.
Q8
S4Black
Window
Hclamp
To Sync & Mask PL3RX(Auto Brightness)
R2 Max Gain
MA3, 4Q9, 10, 11, 12 Q17, 18, 19
TP11
CompBlanking
CompSync
Q16
Q20
CompositeVideoto Memory DSM& Monitors
250 mVB/W
R7
Video BlkLevel (Setup)
REV 1
PreAmp and Video Board (PL2)
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REV 1
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REV 1
MA11 MA21, 2MX21, 2, 3
Vsweep(Defl)
VD
R5 Vcent NOR
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R2 Vcent Rev
R1V size
Q6 ,Q7 Cathode(Newvicon)
VD
Q5 TRIHD
R6H size R7 H Lin
R9
H centNOR
K1
R8 H centRev
H sweep(Defl)
,
HD
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+24V
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IRIS SIGFrom3A9
Std FL
HLC
P1
P2
B3
X
B2B1
+
B1+
B2
M+
IRIS
63 mm(Max open)
Servo
Position
+V
MSI XR 0374
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(Sync separator)
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U4 U3U2 U1Q1 Q2
H
V
(Sync)
Q3,4,5
Q6
C17
VideoIn
Q1 0Q7, 8
Diff. Amp Follower
Q11
Q9R29 Gain
Blk LevelClamp
Remotecontrast
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OSCPLLU101, U102
HSync
R110
+V PhaseDelay
+V
R113H hold
Q101 Pre Amp T101Q104 Output Amp
T102 & RegU105, U104,
U106
+Video150V.+6V.+5V.
5V.
L 102 Lin
H Defl
B+Boost V.
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+V
Q302+300V
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Q302
C309
C304
CR304
To CRT(FOCUS GRID)
+V
+V
DC Focus
150 V
To CRT
(G2)
R321
R323Q301
Cornerfocus
V
Parabola
C307CR308
R310
V Focus
C302 & C303
+V
T301
G2Adj.
L103Width
R311H Focus
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LCT2
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Filter
HV Supply
(sealed)Nonserviceab
CR9
220VAC
U1Switcher Q1 &2R11 U2
CR1
CR8
R5&6
T1
C13
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Shutter
Mirror
Film cassette
Lens
Mirror
Photo Cell
Mirror
CRT
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CRT
Photo cell
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D / A
p
CRT
Monitor
Contrast, blanking& brightness
CompareA/D
Mux
Integratorlight sensor
board
Photo cell
OMemory
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Video Amp.
Comp VideoUnblanking
C t t
Comp Video & Blanking
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SmoothingBoard
Contrast
V. Defl
Comp Sync
V Sweep
H Defl. Coil
H Defl
V Defl. Coil
PLL Sync
H Sync
XSync
CRT Board
H Scan &
Blanking
V Scan &
Blanking
Brightness
H. V. PowerSupply
CRTFilament
+750V.
Brightness
Scan & DYN Focus
Output Board CRT
150 & +750v
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62 CORRECTIVE MAINTENANCE
621 OPERATING PRECAUTIONS
6211 XRAY PROTECTION
During an operation involving Xray emission, put a lead apron between the Xray head and the image intensi-
fier of the mobile system
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fier of the mobile system.
6212 DIFFERENTIAL ELECTRICAL MEASUREMENTS
Differential electrical measurements taken with the oscilloscope (in particular, thyristor trigger voltages) must
be taken with the oscilloscope in differential mode.
Measurements taken in common mode with an earthed oscilloscope may destroy components.
6213 CONNECTOR PL1 OF PWB 3A19 COMMANDE SCR
Never remove this connector while the mobile system is energized.
The thyristor trigger protection currents are on PWB 3A19 and there is a risk of accidental triggering if PL1 is
disconnected.
6214 GROUNDING OF BOARDS ON EXTENDERS
Dont forget to ground the boards (with an extension lead with FASTON terminals).
6215 BOARD REPLACEMENT
6223 READILY INTERCHANGEABLE BOARDS
1A1 MOTEUR ARCEAU PWB (Carm motor)
2A1 MODULE G2 (control console) PWB
Switches position: see adjustment sheet RG40
2A3 MODULE D2 (control console) PWB
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3A3 DIAPHRAGMES 2 (collimator) PWB
Switches position: see adjustment sheet RG40
3A7 AD/kV PWB
Check the presence of bridge W10
3A9 CONSIGNE kV/mA2 (kV/mA reference) PWB
Switches position: see adjustment sheet RG40
Check the presence of W245 bridge
CAUTION : EPROM
Check agreement: name, position, revision
3A12 kV/mA PWBAdjustment of kV measurement: may have to be corrected (see adjustment sheet RG10)
Switches position: see adjustment sheet RG40
6224 INTERCHANGEABLE BOARDS WHICH REQUIRE ADJUSTMENTS
3A5 Timer PWB (Minuterie 2.)
Adjustment of ABC video (adjustment sheet RG 20).
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3A26 Filament heating PWB (Chauffage filament 4)
Switches position: see adjustment sheet RG40
Adjustment of fluoro mA (adjustment sheet RG 12)
Adjustment of fluoro preheating (adjustment sheet RG 13)
Adjustment of RAD preheating (adjustment sheet RG 16)
623 FUSES REPLACEMENT
The unit is internally protected by fuses inaccessible by the user.
During corrective procedure, it is OBLIGATORY to replace a blowed fuse by means of the SAME MODEL
OF FUSE.
A plastic bag with spare fuses is provided in the unit in the module 3. See D/R n 01 sheet for access.
This bag countains :
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This bag countains :
2 Fuses ABC 1A 250V code 854 352 P 025
1 Fuse ABC 3A 250V code 854 352 P 045
1 Fuse ABC 5A 250V code 854 352 P 055
1 Fuse ABC 8A 250V code 854 352 P 075
1 Fuse MDA 3A 250V code 854 352 P 425
1 Fuse FNQ 1A 500V code 854 362 P 315
It is possible to order this Maintenance bagwith the code number 828 731 G 015.
6231 FUSES LIST
NAME MODEL LOCALIZATION ACCES
1A1F5 MDA 3A 250V UNIT see sheet
1A1F8 ABC 3A 250V MODULE 1 D/R 025F2 ABC 3A 250V UNIT see sheet
63 DISASSEMBLY/REASSEMBLY SHEETS
631 GENERAL
There are two categories of disassembly/reassembly sheets : mechanical (numbered from 1) and electronic
(num bered from 20).Each sheet gives the list of tools and equipment needed, preliminary precautions and part disassembly and
reas sembly procedure.
Th b f h h d i d i hi h i i h 9 R l P
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The part numbers of the hardware mentioned in this chapter are given in chapter 9, Renewal Parts.
632 LIST OF DISASSEMBLY/REASSEMBLY SHEETS
6321 MECHANICAL PARTS
Sheet TitleNo.
01 Disassembly/Reassembly of mobile system front cover
02 Disassembly/Reassembly of mobile system rear cover
03 Disassembly/Reassembly of Xray head upper cover
04 Disassembly/Reassembly of steering handle
05 Control console opening procedure
06 Disassembly/Reassembly of guide cable
07 Disassembly/Reassembly of gas spring
08 Releasing the inverter and the board rack
09 Disassembly/Reassembly of Monitors support rear covers
Version No.: 00
STENOSCOP 2 Series 6000 and 9000Job Card RG 40 1 of 2
Purpose: PWB SWITCHES PROGRAMMATION.
Date: May 1993
Time: Manpower:
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Noet Nom du CI Switch No Switch Position FONCTION
EUR. USA
2A1PUPITRE MODULE G2
828 986 G015
S58 14 (A)23 (B)S59 14 (A)
23 (B)S60 14 (A)
23 (B)
ONON
ON
OFF
OFF
OFF
ONON
ON
OFF
OFF
OFF
The 3 switches determine the function of BP 2A1 Sm 35Stenoscop 2 (D6/D9)
HIGH QUALITYor STANDARD FLUOROmode
selection
Stenoscop LE
BLOCKING OF MEMORIZATION ( DR )
2A2PUPITRE MODULE D2
828 984 G025
S52814 (A)23 (B)
OFF
OFF
OFF
OFF
ON = Possibility of camera sweeps inversions
OFF= No possibility of camera sweeps inversions
3A1INTERFACE DSM
S50214 (A)
2 3 (B)
ON
OFF
ON
ON
ON = RX Hold in SP and ER mode ( SN )OFF= No RX Hold in SP and ER mode ( SN )
ON N RX H ld i SN d
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Job Card RG 21 2 of 3
4.3 T3 DELAY CHECK
Connect the scope to 3A1.E122
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Sweep 10 ms/div
On 3A1 connector, connect 3A1.a8 to a20
Select NORMAL FLUORO MODE
Initiate FLUORO and release RX control
T3 Delay is triggered by the falling edge of the RX control.
Verify that the delay is 62 + /8 ms
4.4 T4 DELAY ADJUSTMENT
Connect the probe to 3A1.E126
Sweep 0.2 s/div
Select PULSED FLUORO on the control console.
Initiate FLUORO sequence.Delay T4 is generated after the first RX pulse.
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Job Card RG 21 3 of 3
4.6 PULSED FLUORO RATE ADJUSTMENT : T6
Connect the probe to 3A1.E121
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Select PULSED FLUORO MODE
Initiate FLUORO sequence
Adjust 3A1.R150 in order to obtain a delay T6 of 1000 +/50 ms.
With T4 = 500 ms, the pulse rate is 1 Xray pulse / 1,5 second.
Remove connection between 3A1.a8.a20.
4.7. ANODE COOLING PAUSE SAFETY ADJUSTMENT (not used)
This adjusment is valid only for the PWB INTERFACE DSM.
Code number 828 988 G 035
Connect the probe to 3A1.E608
S 0 5 S /Di
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(with flat field)
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KVP
mA & mAs
Q
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3A7
Module G(2A1)
Sm35
+5VHigh LevelFL (HLC)
b21
b6
b333A9
TVCamera
Lens
Aperture
14
3A19
a6OX
b28b29
3A3
OXHLC
b20
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Sm 33
Module G (2A1)
3A7
TV Camera
ElectronicRad b31 b29 a32
3A9
AGCONAUTO+ER F110
3A1
a31MemoryInterface
MemoryDisplay
DSM
3A9
FL Eproms
+5V
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6652 LIST OF THE ABBREVIATIONS USED IN THE SCHEMATICS
ABBREVIATIONS PWB NAME COMMENTS
LOCALISATION
AUTO 3A751A Automatic FLUORO mode selection
BP01 3A13112B Upper blades of collimator : opening control
BP02 3A13112B Lower blades of collimator : opening control
BPF1 3A13112B Upper blades of collimator : closing control
BPF2 3A13112C Lower blades of collimator : closing control
BPmA(s) Up 3A1766C mA or mAs selection : increase control
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p
BPmA(s) Down 3A766C mA or mAs selection : diminution control
BP OFF 3A3116D Unit switching OFF Pushbutton
BPCL 2A1102B Request of XRay emission Fluoro and RAD
2A3102C
BUS kV/20 3A760C 8 bits coded information of kV/20 value
CAG ON/OFF 3A3119A Gain automatic control switching
CAPA PREPO 3A1935C Prepositioning of converter capacitors (C3/C4 discharge con-
trol)
Consigne mAs 3A778E Analog signal of mAs reference for RAD exposure
FC40 3A991A Minimum kV value (40 kV)
FC110 3A991A Maximum kV value
FL 3A766C FLUORO mode selection
Fmax 3A1931D Maximum frequence operation of the converter. Not used
FS 31B XRay request from foot switch
GR 3A766B RAD mode selection
HLC 2A171A High definition fluoro selectionHLC does not refer to Hi level
controloperation above 5 or 10 R/min. In both Hi definition
and low dose operation, the entrance exposure rate remains
below 10R/min.
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Hold kV 3A1201E Latching of the kV regulation loop after T1 delay (delay of
automatism kV stabilization)
INT 4 CLQ 3A1228B Exposure interruption after 4 VHV leakages
kV C0 3A757C Counter locking when kV bus is at 0
kV 85% 3A1228C Signal generated when kV reach 85% of selected kV value.
kV 120 3A1228C Safety : stops the converter if kV value is 120 kV
kV/20 Auto 3A545D kV reference in automatic Fluoro mode
kV composite 3A1223D Actual kV value (VA + VC)
Mesure mA Sc 3A1220C FLUORO mA measure (1 mA = 1V)
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INTERFACE DSM 3A1 828988 G 035
ACP 201C Anode Cooling Pause : generate a delay between exposures in
ER mode selection if SW602.B is in ON position
HYST 45C not used
MCH 202B Mode change : signal generated during the switching of anoperating mode to an other
ON REST + MCH 203B Reset of the monostable when the unit is switching ON or
during an operating mode switching
OX* 204C RX emission order generated through the adaptation operating
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logic network
OX* R1 204D Signal delayed according to the rising edge of the OX* signal
butsynchronous with the falling edge of OX*
OX* R2 204D Signal synchronous with the rising edge of the OX* signal but
delayed according to the falling edge of OX*
RAZ ROTATION 206D Rotation to the start position of the monitor rotation coils
when mode A/B is selected in the memory
SN 203F NORMAL FLUORO MODE selection generated by default of
other mode selections
666 USE OF THE SCHEMATICS
The schematics are in flow chart form.
As much as possible, the relation between control and action has been respected.
Each signal is indexed and addressed in the schematics.
Example : SEXP signal
The SEXP signal is generated on PWB 3A19 commande SCR2 output a18 schematic
reference 35B.
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The signal is used on PWB 3A12input a14
3A5input b83A3
input a17
The index of the signal is marked in front of the use terminal.
3A12.a14 21B
In front of 3A12.a14 terminal, SEXP signal has the index of the terminal where the signal is
generated : 3A19.a1835B
The wiring between terminal is respected and so permits an easier localization of
interconnection default.
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674 OPERATION OF THE kV/mA PWB 3A12 (DIAGRAM 2130)
This board has the following main functions :
. HV regulation (very high voltage),
. blow safety,
. differential/common mode conversion of mASc and
mAGr measurement values,
. low voltage divider compensation,
. 05 min. timer.
VHV REGULATION
When selecting the KV data, Op 114.8 (B) supplies a voltage refe-
. This changes the kV20
which will be transmitted to the memo
ry between two thyristor conductions.
OPERATING SAFETY:
Circuit OP114. A permanently compares the output of OP114 B
with the kV20
reference.
In normal operation, the output of amplifier OP114.B must always
be less than the kV reference.
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W e se ect g t e V data, Op .8 ( ) supp es a vo tage e e
rence kV*20 (consigne kV
20 1)x1.1to the input of compara-
tor Op 122.
The composite KV signal is generated by the measurement of Vc/
Va (cathode/anode) at the input of Op 180.
The output in common mode of the Op 180 is linked to potentio-
meter R216, adjusted by the latter (KV regulation), is transmitted to
the input of Op 122.
. The signal kV*20
and KV composite being different, the signal
DEM X permits the oscillator to operate
20If a fault in the regulation circuit causes the opposite to occur com-
parator OP114.A flips and blocks OP114 B, i.e. DEM X.
LEAKAGE SAFETY :
The output of OP180 is input to OP46, which detects a sudden
VHV variation. The output of OP46 then triggers monostable G32.
The output of G32 sends signal TROU CLQused by the hystere-
sis safety of SCR PWB 3A19 and SCR control.
Counter G31 counts to 4 VHV leakages and then sends the INT
4CLQ signal, used to shutdown the inverter by SCR PWB 3A19.
675 OPERATION OF SCR CONTROL PWB 3A19 (DIAGRAM 3135, 3640)
This PWB performs the following functions :
. preset of inverter capacitance 4C3,
. generation and synchronization of the control pulses of main
thyristors 4CR6 and 4CR1,
. selection of auxiliary condensators,
. control the status of the 12 V safety PWB,
. control the stop signals(temperature, VHV leakages, mAs refe
rence reached),
. current detection in main thyristors 4CR1 and 4CR6,
. generation of SEXP, PRE, SYX GR and SYX SC commands
for regulation PWBs 3A5, 3A12 and3A26,
. generation of clock (CLOCK)of the inverter,
. generation of signal fmax(not used),
hysteresis safety of HV transformer
SELECTION OF AUXILIARY CAPACITORS (4C1 AND4C4) :
When a radiography is requested, signal GR from PWB 3A7 is
converted into signal RAD which is then applied to amplifier
(Q300) and isolating transformer TR313 of the trigger of inverter
thyristor 4CR4.
PWB 12V SAFETY
A +12 V continuity line crosses the PWBs in the mobile system,
thus checking the voltage and making sure that the PWBs are pro-
perly plugged in. The feedback from this line is input into a safety
circuit (Q189,Q178) where it is checked. If the feedback is incor-
rect, a lock command is sent to the all driver amplifiers of the isola-
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. hysteresis safety of HV transformer.
PRESET OF INVERTER CAPACITOR 4C3 :
Logic circuit OX (G116A) generates command OX using the
following signals:
. BPCI, generated by the Xray PB on the control console,
. FS, generated by the footswitch,
. RAD, generated by GR on PWB 3A7 when radiography
mode is selected.
Command OX is sent to memory interface PWB 3A1 (in memory
ting transformers (TR248TR313TR269TR291).
The lock command of the drivers operates also if :
SX signal is not present : signal generated by BPCL or FSPOWER SUPPLY (+12V) voltage is lower than 6,2V
(Q185D180)
CONTROL OF THE STOP SIGNALS
The signals should be as follows:
. SEC BELLOW = 1 (if the Xray housing temperature is less than
70oC),
. STOP mAs = 1 (switches to 0 when the mAs reference on the
control console is reached.INT 4CLQ 1 ( i h 0 h f i VHV l k
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676 OPERATION OF TIMER PWB 3A5 (MINUTERIE) (DIAGRAM 4150)
TIMER DISPLAY
The reference clock signal PRX CP is supplied by kV/mA PWB
3A12.The 50 Hz frequency is at first divided by 50 (counters G143 and
G144), which gives a 1 Hz signal, input to 4bit counter G158.
The output of counter G158 is decoded by G184 to supply the
7segments display DS15. This is how seconds are displayed.
ABC HYSTERESIS OR AUTO KV/20 REFERENCE
. The purpose of this ABC hysteresis is to make an AUTO kV20
refe-
rence by using the RX control signal output from the TV camera in
order to use the correct kV to obtain an optimum TV image.
. The RX control signal output from the TV camera is connected to
the + input of A82 comparator. The input of A82 is connected
to potentiometer R65 (video image reference).
. The output of A82, i.e. RX is connected to A74B through R66potentiometer (system gain) and after to an integrator circuit A73
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After 10 seconds, G158 sends a pulse to G159, counting tenths of
seconds. G159 counts to 6 (corresponding to 1 minute) and sends
a pulse to G160, which totalizes minutes.After 10 minutes, G161 receives a pulse from G160, and totalizes
tens of minutes.
Zero reset is by pressing key Sm19 of the mobile system control
console. This generates an active signal to the RESET inputs of the
counters.
potentiometer (system gain) and after to an integrator circuit A73,
C72 and R60.
. A74.B does not permit the RX to pass unless it greater or lowerthan a threshold determined by the hysteresis R67. A121 BC
. When RX control signal is not present, the system is calculated to
provide a kV20
reference equal to 2V (= 40 kV reference).
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678 OPERATION OF 3A7 PWB AD/kV (DIAGRAM 6170)
MODE OF OPERATION SELECTION
The basic circuit providing this operation is G150 : counter CMOS
4017B.When power is switching ON, the RC network (C119R117) hold
counter outputs in Reset state : output 0(pin 3) to 1 logic other
outputs to 0 (outputs 1 to 9).
This counter position corresponds to FLUORO mode selection.
Pin 13 of G150 (CLOCK INHIBIT) is held to 1 logic through R80
d i hibit th ti
Output counter supplies LED corresponding to the pressed BP
through G 139 (A to F) and provides selection informations though
G 137 (A to F) to the unit.
The 300 kHz clock needed for G150 to operate is taken from ADC
converter G90 on the same board.
The following signals are output from the board :
. ER, SP to the memory interface board if present,
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and inhibits the counting sequence.
When a PB selection mode is pressed, logic state of G150 output(0V) is applied through the PB on pin 13 of the counter (CLOCK
INHIBIT).
This 0V logic state permits the counting sequence : clock pulses on
pin 14 generates counter evolution until the output corresponding
to the pressed BP rises to 1 logic state : clock INHIBITS input rises
to 1 and so inhibits count : the counter is locked on this position
until an other PB is pressed.
. BP mA(s) UP, BP mA(s) DOWN, to the kV/mA reference PWB
3A9,
. GR to the SCR control PWB 3A19.
1.2 Hz and 12 Hz clock (Clock 1 Clock 2)
These two clocks are for the operation of the kV/mA reference
PWB 3A9. They allow mA and mAs references to be incremented
at two different speeds.
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6710 OPERATION OF FILAMENT 4 HEATING PWB 3A26 (DIAGRAM 8185)
This PWB performs the following functions:
. current regulation in FLUORO mode,
. current regulation in RADIOGRAPHY mode,
. generation of STOP mAs commandwhen the mAs reference is
reached,
. safety in radiography mode 7 an 10 secondes
CURRENT REGULATION IN FLUORO MODE :
The mA Fluoro measurement sent from PWB 3A12 and the mA
Fluoro reference sent from PWB 3A9 are compared by A220.
The Fluoro rate can be adjusted using R9.
added to the above difference, thereby providing the mA radiogra-
phy reference at output A214.
GENERATION OF STOP mAs SIGNAL
Integrator A138 calculates mA x s.Because the mAs reference may vary greatly (0.16 to 160), the
integrator features two integration speeds.
PWB 3A9 splits the mAs reference variation range into two sub
ranges: 0.16 mAs to 5 mAs and 6 mAs to 160 mAs.
The integrator selected by 0 (on a25 connector PWB) comprises
highvalue R6 (100 K) and A138. The integrator selected by 1
i l l R5 (5 K) d A138
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The Fluoro rate can be adjusted using R9.
The difference between the reference and the measurement passes
from the output of A220 through the lowpass filter comprising
A222 before transmission to the inverter input of A214 by electro-
nic switch Q287.B when signal kV 85% is present.
If command SYX SC sent by SCR PWB 3A19 switches to 0, the
electronic switch Q287.B conducts.
Adjustable potentiometers R3 and R4 are also connected to inverter
output of A214. These potentiometers used to adjust the current
during the preheat phase, i.e. when no reference is present, in
RAD or FLUORO mode.
CURRENT REGULATION IN RADIOGRAPHY MODE
comprises lowvalue R5 (5 K) and A138.
A180 compares the integrator output with the mAs reference sup-
plied by PWB 3A9. When the values are equal, the STOP mAssignal switches to 0 and prevents SCR PWB 3A19 from sending
pulses to the thyristor triggers, i.e. stops the inverter.
RAD SAFETY : 7 AND 10 SECONDS
Two safeties are provided in order to limit the exposure duration in
RAD mode.
The correct safety is selected by 3A3.S133.B : RP power reduc-
tion.
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6713 EXPOSURE PB FLUORO TIMER (DIAGRAM 101110)
EXPOSURE PB
The Xray request is performed by 2 PB : 2A1.Sm7 and
2A3.Sm26.
The PB leds are switched ON by 3A12.G74, 3A7.Q140, R154 andR155.
05 MIN. TIMER
The basic clock signal is supplied by the oscillator G69, adjustable
by R217 to 50 Hz. This signal comprising PRX.CP is directed to
the timer PWB 3A5 to display the timer value, and to the counter
G35 to supply both the LED of key Sm14 (05 min.) and buzzer
DS 175.
G69 is triggered by PRX = 0, i.e. when Xrays are present.
PRX = 0 also triggers monostable G39, validating buzzer operation
after approximately 0.25s.
The 2A1.Sm14 PB resets the timer.
RX LAMP
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p y ,
assembly (G37, G36, G38) to increment up to the following values
:
. 457, which sends a stop signal to SCR PWB 3A19,
. 426, which validates a 2 Hz flash signal generated by oscillator
The lamp 9DS1 is lighting when XRays are generated in RAD or
FLUORO mode.
Signal PRX causes 3A12 Q625 conduction through G74 wich
energises 9A2 K3
9DS1 is supplied through the contact 13 of 9A2 K3.
6714 OPERATION OF THE COLLIMATOR 3A3 PWB (DIAGRAM 111115)
COLLIMATOR ROTATION
The collimator rotation is ensured by 7M1 motor.
A 12V voltage is applied on 7M1 motor by 2A3 Sm11 for CCWrotation.
A + 12V voltage is applied on 7M1 motor by 2A3Sm12 for CW
rotation.
SHUTTERS OPERATION
The control is ensured by PB 2A3.Sm13 (openingBP02) and
2A3.Sm14 (closing BPF2).
After according, these signals switch the pushpull stage output to
+ 12V or 12V if limit switch are not reached (FCSC2 in FLUO-
RO and FCGR2 in RAD).
These 2 limit switches permit to identify the maximum opening
positions in FLUORO mode and RAD mode.
AUTOMATIC PREPOSITIONNING
When unit is switched from RAD mode to FLUORO Mode the
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Two possibilities are available :
. Image intensifier 16 cm : 1 field
. Image intensifier 22 cm : 2 fields
16 CM IMAGE INTENSIFIER : 1 FIELD
When unit is provided with a 16 cm I.I, the 7M5 motor is not pre-
sent on the collimator ASM.
On the 3A3 PWB, the switches S501.A and B are open : Z infor-
mation is to 1 logic (112.E G165.A pin 6 to 1 and pin 4 to 0)
When unit is switched from RAD mode to FLUORO Mode, the
shutters of the collimator are automatically positionned in FLUO-
RO mode in order to limit the XRay emission at the FLUOROsize (FCSC1 and FCSC2 actuated).
On the other hand, when unit is switched from FLUORO mode to
RAD mode, the shutters opening must be manually controlled.
The LEDS of the 2 PB 2A3Sm14 and Sm16 are flashing and RAD
opening is completed when LEDS flashing is stopped. (FCGR1
and FCGR2 limit switches reached).
22 CM IMAGE INTENSIFIER : 2 FIELDS
XRAY BEAM LIMITATION
Two limitations are provided :
16 cm controled by 7M4
22 cm controled by 7M5
When unit is mounted with a 16 cm II, only the 16 cm limitation is
present on the collimator.
RAD MODE
FLUORO MODE
16 cm imager
RAD = 0 and RAD = 1 informations control the 7M4 motor : 16
cm field limitation is positionned and limits the XRay beam to the
imager size.
Motor is always supplied in order to maintain the limitation device
in place.
22 cm imager
RAD = 0 and RAD = 1 informations control the 7M4 motor : 22
cm limitation is positionned and limits the Xray beam to the ima-
ger size.
M t i l li d i d t i t i th li it ti d i
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16 cm or 22 cm imager
RAD = 1 and RAD = 0 informations, after decoding, control the
motion out the field of the XRay beam limitation device : motors
are always supplied in order to maintain the limitation in place.
Motor is always supplied in order to maintain the limitation device
in place.
ZOOM selection : ZOOM selection controls the positionning of the
16 cm limitation with 7M5
6715 OPERATION OF THE COLLIMATOR PWB 3A3 (DIAGRAM 116120)
AUTOMATIC GAIN CONTROL (CAG ON/OFF)
The signal FC110 controls the CAG ON/OFF sequence in the ca-
mera.
The CAG function operates in AUTOMATIC FLUORO mode andin ELECTRONIC RADIOGRAPHY only during the XRay emis-
sion (SEXP = 1) and if maximum kV value limit (FC110=0) is
reached.
The delay, generated by R239, C235, inhibits CAG operation at the
beginning of the VHV regulation.
The switch S133.A locks camera operation in AGC mode.
ZOOM FUNCTION (22 CM IMAGER)
When the ZOOM Function is selected (PB 2A3.Sm17111E) a Z1
signal is generated and select in the camera the ZOOM mode
(mode 1) through 3A3Q148.
SWITCHING OFF SEQUENCE
When the PB 2A3.Sm21 or 2A1.Sm4 is depressed, 1 logic signal is
applied on Q152 base.
Q152 energizes 9A1.K3 (2C)
9A1K3 contact applies 110V on 9Sm1 auxiliary coil : the unit
switches OFF
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The switch S133.A locks camera operation in AGC mode.
GO TO BLACK VIDEO OPERATION
The 3A3.S133.D permits a blanking of video signal of the camera
without XRay emission (SYX = 1).
BEAM MAX CONTROL
Without Xray emission, the camera is in reduced beammode.
REDUCED POWER SELECTION
When unit is used on a mains voltage of 100, 108 or 120V (USA)
it is necessary to reduce the power : this operation is controlled by
A3.S133.B
OX.HLC
When unit operates in FLUORO and HIGHT DEFINITION (HLC)
mode the OX signal (from 3A19.a16) is validated by SYX Sc and
RAD and generates the 0X.HLC signal.
Th SYX SC i l h ld h HLC l i d i h X R
6716 CARM UP/DOWN MOTION (DIAGRAM 121130)
COLUMN MOTORISATION
The column motorisation is performed by a DC motor 1M1.
The UP motion is controlled by the BP 2A3.Sm23 or 2A1.Sm5
which energises the relay 1A1.K34
The DOWN Motion is controlled by the BP 2A3.Sm22 or
2A1.Sm9 which energises the relay1A1.K41.
A motion request energises the relay K6 through D7 or D4 diode
and supplies the motor.
24 VDC POWER SUPPLY
A 24 VDC power supply is provided to supply the imager (VHV
and TV camera).
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6717 OPERATION OF 3A5 TIMER PWB (MINUTERIE). (DIAGRAM 131140)
This board performs the following functions :
. monitor coil rotation,
ROTATION OF MONITOR 1 COILS
This function is controlled by keys Sm8 and Sm7 on the control
console.
Pressing these keys generates a logic signal which is amplified by
transistors Q151 and Q156.
These transistors control relays K7 and K5 located on the monitor
cart relay PWB 9A1.
Closing one of these relays causes monitor coils to rotate in the
desired direction.
ROTATION OF MONITOR 2 COILS (OPTIONAL)
This function is identical to rotation of monitor 1 coils and is con-
trolled by keys Sm6 and Sm5.
PWB 3A5 is fitted with the corresponding circuits.
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1 2 3 4 5 6 7 8
910111213141516
Vcc
GND
C R/C CD +TR TR Q Q
C R/C CD +TR TR Q Q
4538
Dual MONOSTABLE
T = RXX CX
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VccQ Q C R D S
Q Q C R D S
1 2 3 4 5 6 7
891011121314
GND
4013
Dual D Flip Flop
1
0
Q
1
0X X 0 1 1
CL D R S Q Q
X X 1
00
0
0
1 Hi h l l
1
X 0
0
0
0
0
1
Q
0
0 L l l X D t
1X X 1 1 1
no change
6718 WORKING OF THE INTERFACE BOARD DSM 3A1 (DIAGRAM 201205)
GENERAL
Integrated circuit CMOS 4538
The 4538 circuit includes 2 independent monostables whose time
constants are determined by an external RC circuit
Each monostable can be triggered on the rising or falling dege of a
pulse, according to the input chosen.
SELECTION OF THE MODE OF WORKING
The information of selection of RAD, SP and ER mode condigura-
te the control logic RX and the memory management.
The information NORMAL FLUORO is obtained as a default if no
other mode of working has been selected.
MEMORY SIGNALS
Signals MG+ and MF+
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outputs 4 and 12 rising edge
inputs 5 and 11 falling edge
Each monostable has 2 outputs :
outputs 6 and 10 generate a positive pulse
outputs 7 and 9 generate a negative pulse
Inputs 3 and 13 reset the monostables.RAZ = logic 0
The signals MG+ and MF+ manage the technique of working ofthe memory (FLUORO, PULSED FLUORO, E.R.).
Signal MEMO +
This signal indicates the end of digitalization or the authorization of
treatment (filtering).
The signal is maintained at 0 logic during the time of establishment
and stabilization of the video signal.
GENERATION OF OX OUT ORDER
The OX order OUT depends on :
the mode of working selected
the signal X.PERM from the memory.
MONOSTABLES5 monostables are present on the PWB 3A1
T1(206AG117B)
This time allows the picture to stabilize in AUTO mode. It can be
adjusted by R151.
It can be shortened by the signal HYST (not active in this version).
of the PULSED FLUORO sequence onwards
It can be shortened by the signal X PERM.
It is not influenced by the release of the order OX, so as to permit
the memory to acquire a correct picture.
PULSED FLUORO CADENCER
T6 (202AQ110A)
The time T6 is generated by a multivibrator type 555. This time
determines the cadences of the RX pulses in PULSED FLUORO
mode.
The multivibrator is triggered at the end of the time T1 and syn-
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T1 is deleted if the RX control is released.
T2(207AG117.A)
This time is fixed and is used as safety timer of the duration of RX
necessary for processing the picture (16x40 ms = 640 msec).
It is shortened by the signal X PERM from the memory.
T2 is used in ER Mode and during the first impulse in PULSED
FLUORO mode.
T2 is deleted if the RX control is released.
T3 (207B G115 A
chronized by each pulse T4 this makes it possible to have a cons-
tant time between each pulse.
The integrated circuits G119.A and G82.8 (203A) prevent the
emission of an additional impulse when the BP RX is released.
SIGNALS OX AND OX*
The treatment of the signal OX and OS* is prvbided by the D
FlipFlopG103.B (204C).
Th f thi i it i t
ORDER X OUT
NORMAL FLUORO MODE
As soon as BP RX is pressed, OX OUT passes to 1 logic.
When the BP RX is released, OX OUT is released when the time
T3 has expired.
ELECTRON RAD MODE
The working depends on the position of S502.1 (205B).
S 502.A in position OPEN
The RX emission is generated as soon as the BP OX is pressed and
S 502.A in position CLOSED
The RX emission is generated as soon as BP OX is pressed.
If the BP OX is released during the RX emission, the emission is
not interrupted, and the end of exposure will be given by the signal
STOP DSM c