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5. Field Calibration

Technical Manual P/N 9894.00.G6

5-7

Tube Calibration Messages

-

"Press Prep & RAD to begin": The generator is ready to calibrate the selected filament; press the
console exposure buttons (or room footswitch) to start the calibration.

-

"Searching Emission": The generator searches for the proper current value that will emit tube
current.

-

"Acquiring mA Samples": The generator does exposures and reads mA values.

-

"I FIL : X.X Amp ": Display of filament current delivered for the current kV station.

-

"Calib Done ": The generator has completed the calibration for the selected filament

-

"Calib Aborted ": The operator has cancelled the tube calibration (Cancel key).

-

"No emission ": Error message

-

"No mA sample ": Error message

Tube Calibration Viewer

It is possible to see the different tube emission calibration curves resulting from a tube calibration.
The different curves represent the plotting of the tube current (in mA) versus tube filament current
(in Amps) for different kV stations. This is done using the Epsilon PC tools module; refer to Section
7.5.3.3.

Figure 5.4

–

Tube Calibration Viewer.

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Содержание EMD Epsilon EPS 45-80

Страница 1: ...EPS 45 80 High Voltage Generator Technical Manual MANUAL P N 9894 00 G6...

Страница 2: ...ation storage or retrieval system without the written permission of emd technologies Inc 400 du Parc Saint Eustache Quebec Canada J7R 0A1 IMPROVEMENTS emd technologies reserves the right to make chang...

Страница 3: ...he installation start up setup instructions and maintenance procedures for the generator It also gives the performance and technical specifications of the described product and provides the installer...

Страница 4: ...milliamperes during the irradiation time The operator console can also display the peak mA rather than the average mA during the optional Pulsed Fluoro if the user does want so mAs X ray tube current...

Страница 5: ...ator and others in the vicinity unless established safe exposure procedures are strictly observed The useful and scattered beams can produce serious or fatal bodily injuries to any persons in the surr...

Страница 6: ...y generator is suitable for use in all establishments other than domestic and those directly connected to the public low voltage power supply network that supplies buildings used for domestic purposes...

Страница 7: ...eters m Field strengths fixed RD transmitter as determined by an electromagnetic site survey a should be less than the compliance level in each frequency range b Interference may occur in the vicinity...

Страница 8: ...be that of a typical commercial or hospital environment Surge IEC 61000 4 5 1 kV differential mode 2 kV common mode 1 kV differential mode 2 kV common mode Mains power quality should be that of a typi...

Страница 9: ...ing to the transmitter manufacturer NOTE 1 At 80 MHz and 800 MHz the separation distance for the higher frequency range applies NOTE 2 These guidelines may not apply in all situations Electromagnetic...

Страница 10: ...azards that could result in severe personal injury or death Alert service representative to the fact that X rays will be produced during the detailed procedure Hazards which could result in equipment...

Страница 11: ...in Radiography 1 11 Auto Focal Spot in optional Cardiac mode 1 11 1 2 1 4 AEC Mode 1 12 1 2 1 5 Power Range 1 13 1 2 1 6 Typical kV Waveform 1 14 1 2 2 Fluoro Mode Specifications 1 14 1 2 2 1 Fluoros...

Страница 12: ...1 1 Controller Board P N 9798 01 3 3 3 1 2 Line Filter Board P N 9916 00 01 3 8 3 1 3 Optional Boards 3 9 3 1 3 1 Fluoro PMT Board P N 9822 00 3 9 3 1 3 2 Photodiode Ion Chamber Fluoro Board P N 1103...

Страница 13: ...Solid State AEC Chambers 3 34 3 6 2 PMT or Photodiode Interfacing 3 35 3 6 3 Remote Analog Signal Flat Panel Interfacing 3 35 3 6 4 SPD Dose Tracking Interface Optional Feature 3 36 3 7 FLUORO INTERF...

Страница 14: ...Setting the Operator Console Language 4 41 4 8 3 2 Console Language Translation Module 4 41 5 0 FIELD CALIBRATION 5 1 5 1 INITIAL TURN ON TESTS 5 2 5 1 1 Tube Stator Verification 5 2 5 1 1 1 Epsilon A...

Страница 15: ...RITY OF LOADING FACTORS 6 12 6 5 CONSTANCY OF AEC MODE 6 15 6 6 AUTOMATIC EXPOSURE CONTROL LIMIT 6 18 6 7 FLUORO MODE 6 18 6 7 1 Fluoro Console 6 18 6 7 2 Fluoroscopic Entrance Exposure Rate 6 18 7 0...

Страница 16: ...l Cable Discharge Interface Board P N 11206 000 7 36 7 6 REPLACEMENT OF HARDWARE AND SOFTWARE 7 37 7 6 1 Three Phase Inverter Board EPS Starter Board Replacement 7 38 7 6 2 Generator Basket Replacemen...

Страница 17: ...Procedure 8 4 8 2 3 1 Labels Inspection 8 4 8 2 3 2 Cable Tightness Weariness 8 4 8 2 3 3 System Grounding Inspection 8 4 8 2 3 4 Field Calibrations 8 4 8 2 3 5 Generator Data Backup 8 5 8 2 3 6 Vali...

Страница 18: ...ification 9 7 9 5 FIELD CALIBRATION 9 8 9 5 1 X ray Tube Calibration 9 8 9 5 2 Fluoroscopic Maximum Entrance Exposure Rate 9 8 9 5 3 ABS Mode Adjustment Section 5 6 9 8 9 5 4 Image AEC Brightness Devi...

Страница 19: ...Focal Spot in optional Cardiac mode 1 11 1 2 1 4 AEC Mode 1 12 1 2 1 5 Power Range 1 13 1 2 1 6 Typical kV Waveform 1 14 1 2 2 Fluoro Mode Specifications 1 14 1 2 2 1 Fluoroscopy Types 1 14 1 2 2 2 G...

Страница 20: ...wer switching inverter modules and a cascaded series of high frequency power transformers embedded in a solid dielectric high voltage unit Extremely sharp kV waveform with rise and fall times unparall...

Страница 21: ...ication 50 kW to 100 kW Epsilon High Voltage Generator Configuration EPS wp Ex EPS 65R EPS 80CV w Power range 30 to 100 kW p Purpose of equipment Purpose of Equipment RAD Fluoro Cardiac Vascular R RF...

Страница 22: ...Ion chamber photomultiplier tube photodiode or flat panel Fluoro On RF CV configurations Continuous Pulsed Fluoro and optional High Performance Pulsed Fluoro available Dual Fluoro mode available Conti...

Страница 23: ...phic screen Connection to the generator is carried out by a 23 6 m 50 foot console cable other cable lengths are optional Rotor Controller P N 9962 xx or P N 11104 xxx Microprocessor controlled electr...

Страница 24: ...exam This provides constant surface dose along the full SPD span mAs pulse 1 SPD 2 High Frame Rate option Typically dedicated for high grade special procedures this option allows image acquisition at...

Страница 25: ...ld also be printed when an optional DAP printer is connected to the generator Cable Discharge Unit P N 10027 000 EPS CV configurations The Cable Discharge Unit provides the EPS 45 80 High Voltage gene...

Страница 26: ...001 This option A affords mechanical enclosure of the generator by providing a high quality cabinet that covers the Epsilon High Voltage generator and hides out the mains cable entry Multiple passage...

Страница 27: ...ation time From 1 0 ms 1 to 10 seconds 2 with 25 increment steps 41 stations 1 0 1 1 25 1 6 2 0 2 5 3 2 4 0 5 0 6 3 8 0 ms 10 12 5 16 20 25 32 40 50 63 80 ms 100 125 160 200 250 320 400 500 630 800 ms...

Страница 28: ...mA algorithm variable kW This method intends to reduce the patient dose Cardiac kW 1 Exposures performed using constant kW algorithm variable mA This method intends to improve the image contrast D S...

Страница 29: ...uration Chapter 4 Table 2 Focal spot and anode speed selection as a function of technique kW T Tu ub be e L Lo oa ad di in ng g Focal Spot Anode Speed k kW W k kW W Small Low Small High Large Low Larg...

Страница 30: ...solid state chambers CPX Adapter board P N 9990 00 1 conventional ion chamber Usable input signal range from 0 1V to 10V or from 0 1V to 10V Positive or negative input signal current Usable input sig...

Страница 31: ...100 79 EPS 50 Max kW 30 37 48 50 kW Max kV 150 150 150 137 110 87 EPS 55 Max kW 30 37 48 55 kW Max kV 150 150 150 150 130 103 81 EPS 65 Max kW 30 37 48 60 65 kW Max kV 150 150 150 150 140 111 87 EPS...

Страница 32: ...ations for Continuous Pulsed Fluoro Table 4 Fluoro Loading Factors kV range 40 to 125 kV in one kV steps with programmable kV range mA range Cont Fluoro 0 2 to 12 5 mA Manual continuous Fluoro mA stat...

Страница 33: ...d Fluoro FLUORO ENTRANCE EXPOSURE RATE Two distinct Fluoro entrance maximum exposure rates are supported The generator controls the Fluoro surface dose rate as a function of the kV pulse rate and opti...

Страница 34: ...e as depicted in Table 7 Table 6 High Performance Pulsed Fluoro Loading Factors kV range 40 to 125 kV in one kV steps with programmable kV range mAs range From 0 025 up to 5 0 mAs any pulse rate and a...

Страница 35: ...o maximum SPD mAs pulse User 0 025 to 5 0 mAs Image Enhancement factor User See Table 7 1 With SPD Dose Compensation option 1 2 2 4 High Power Fluoroscopy Option High Power Fluoro allows performing co...

Страница 36: ...Fluoro beam on alarm 1 Pulsed tone Low Fluoro 1 beep 2 seconds High Fluoro 1 beep second Fluoro 5 minute elapsed alarm 2 Continuous tone Anode H U over 80 alarm Pulsed tone 2 beeps per second System...

Страница 37: ...0 2 4 4 1 400V 0 11 170 116 2 0 3 4 EPS 90 480V 0 16 100 145 122 5 0 7 0 2 4 4 1 400V 0 09 200 136 2 0 3 4 EPS 100 480V 0 12 100 165 138 5 0 7 0 2 4 4 1 Notes 1 Automatic mains line selection no tran...

Страница 38: ...Tube Filaments Current range Up to 8 1RMS amperes Filament power Maximum 100 watts Focal spot number 2 Tube Derating The tube can be derated to extend its usable lifetime to troubleshoot specific con...

Страница 39: ...e locally in force at the installation site If the EPS generator is fit with the optional cable discharge unit high end Cardiac configurations this latter contains approximately 30 liters of dielectri...

Страница 40: ...22 3 4 64 75 kg 140 165 lb with cabinet 472 18 1 2 812 19 3 8 768 30 1 4 79 90 kg 175 200 lb with 2 Tube option cabinets 472 18 1 2 1268 50 768 30 1 4 113 124 kg 250 275 lb with Cable Discharge optio...

Страница 41: ...Access H V Cables Access Side of EPS Cabinet Upper left side cable access also possible on right side EPS generator inside decorative cabinet Multiple High Voltage Cables Access Upper front cable acc...

Страница 42: ...chnical Manual Changes or modifications to this equipment not expressly approved by emd technologies could void its conformity to applicable standards 1 4 PERFORMANCE ACCURACY AND REPEATABILITY Table...

Страница 43: ...3 INSTALLATION SETUP 2 5 2 4 POWER LINE CONNECTION 2 7 2 5 X RAY TUBE CONNECTION 2 8 2 5 1 High Voltage Cable Connection 2 8 2 5 2 Tube Stator Connection 2 8 2 5 3 Metal Center Section Connection 2 9...

Страница 44: ...d copy should be filed at the installer s office Inspect all parts for any mechanical damage that could directly or indirectly impair the operation of the system 1 Epsilon High Voltage Generator with...

Страница 45: ...s and receptacles N 72 d Cables must be equipped with a locking screw to prevent the loosening of the ring nut without an appropriate tool IEC 60601 2 7 Clause 15 aa 3 ABS AEC Sensors i Ion chamber AI...

Страница 46: ...EPS 45 80 High Voltage Generator Technical Manual P N 9894 00 G6 2 4 2 2 INTERCONNECTION OVERVIEW Figure 2 1 System Interconnection Diagram...

Страница 47: ...nough access for the maintenance of the generator Figure 2 2 High Voltage Generator Installation Layout 1 2 1 Should the unit be permanently fixed on a surface or on the floor you ought to leave the f...

Страница 48: ...Contact emd technologies service department for more information 3 The console can be installed up to 100 feet away of the High Voltage Generator Section 2 6 For longer installation setup contact emd...

Страница 49: ...the mains line of the disconnect switch to the Line Filter Board J2 1 J3 2 J4 3 and J5 Neutral i lugs ii Figure 2 4 i For Delta line configuration leave the neutral lug unconnected ii Lugs maximum wir...

Страница 50: ...ricated silicone washer Isolation is necessary to prevent electric arcs between the receptacles and the Anode Cathode modules 5 Insert the high voltage cable connector anode in the high voltage recept...

Страница 51: ...J8 pin 2 Return 1 Tube Housing Shield Shield on Line Filter Board Holder Figure 2 4 If there is no tube housing safety on your installation install a jumper in place of the interlock switch between p...

Страница 52: ...015 xxx to interconnect the Epsilon console J7 with the generator controller J4 RS 232 and USB Operator Consoles Figure 2 5 Back Panel of Epsilon Operator Console P N 9777 xx 3 Use the two swivel leve...

Страница 53: ...2 6 1 Install the hand switch holder on the hand switch bracket using the two pairs of lock nuts and HMS screws n 4 2 Unscrew the left or the right swivel leveling mount according to which side the h...

Страница 54: ...9777 xx 5 1 Sems Head machine screw no 10 Part of P N 10018 xxx 6 2 Stand off Part of P N 10018 xxx 7 2 Lock nuts Part of P N 10018 xxx 8 2 Head machine screw no 4 Part of P N 10018 xxx 9 1 Hand switc...

Страница 55: ...be connected to the chassis ground lug located on the Line Filter Board Figure 2 4 This terminal is identified as shown below Identification of chassis ground terminal on Line Filter board According t...

Страница 56: ...the generator s chassis ground undo the ground strap brackets from the generator Figure 2 9 B and connect instead the client I O system chassis ground to the generator chassis ground provided on the F...

Страница 57: ...d Equipment NO Ground Strap To prevent ground loop Field Equipment connected to X ray Room Earth Ground B Generator Section LFB Figure 2 9b System Grounding Configurations 2 3 Field equipment isolated...

Страница 58: ...e of the generator should be done at the end of the installation procedure only It is therefore better to postpone the final enclosure of the EPS generator after the Field Calibration procedure Chapte...

Страница 59: ...4 6 Fluoro Alarm Reset Input Type 3 25 3 5 DIGITAL OUTPUTS 3 26 3 5 1 Digital Outputs Specification 3 26 Optional Photodiode Ion Chamber Fluoro Board 3 27 3 5 2 Types of Programmable Outputs 3 27 3 5...

Страница 60: ...generator when power is applied Typically digital I Os Are active low diode isolated inputs Are open collector output switches to system DC return Active low they get true in the sense of the signal n...

Страница 61: ...put IP4 2 Progr input IP3 3 Progr input IP2 4 Progr input IP1 5 Programmable inputs using Epsilon PC Tools program 3 4 Trigger input 1 6 Configurable synchronization of exposure start and or exposure...

Страница 62: ...ed signal from the CPU 3 2 1 Table 16 J15 Connector P N 9798 01 Signal Name Pin Description Refer to VTH A1 Voltage reference for input threshold 5V or 12V Do not use this voltage as an external volta...

Страница 63: ...me Pin Description To Epsilon Operator Console using Console cable P N 10015 xxx 24V DC 1 For use with Epsilon Operator Console only CAN H 2 CAN bus interface signal GND 3 4 Ground N U 5 6 7 N C Power...

Страница 64: ...mon Enabled 9 Safety signal independent from serial interface Exposure is allowed only when this pin is grounded via Console Common Enabled set from CPU bit activated thru Epsilon PC Tools configurati...

Страница 65: ...able in PC Tools 3 8 2 Table 22 J6 Connector P N 9798 01 Signal Name Pin Description Refer to 0 VDC 1 Ground to external console The wire is connected with cathode of generator optocoupler Power on of...

Страница 66: ...Refer to K1 3 4 Generator Power on relay 3 5 4 1 K2 1 2 Programmable relay output 3 5 4 2 Table 25 J6 Connector P N 9916 00 01 Signal Name Pin Description Tube Stator Connection Refer to Stator Main...

Страница 67: ...1 3 Optional Boards 3 1 3 1 Fluoro PMT Board P N 9822 00 Table 27 J1 Connector 9822 00 Signal Name Pin Description RG 59 U coaxial BNC terminated Refer to PMT High Voltage supply 1 High voltage supply...

Страница 68: ...t L4 A7 Progr output L3 A8 Progr output L2 B1 Progr output L1 B5 Programmable outputs using the Epsilon PC Tools generator setup program 3 5 2 1 Analog Input 1 B2 Not used in this generator version Co...

Страница 69: ...000 Signal Name Pin Description Additional footswitch Refer to Fluoro High Level 1 Low for Fluoro High level Fluoro Low Level 2 Low for Fluoro Low level Footswitch common 3 Return signal for Fluoro s...

Страница 70: ...J5 and 9 J4 Refer to Integrator feedback 1 Positive or negative integrating ramp from 0 V to 10V DC Field Select A 2 Field Select B 3 Field Select C 4 Low or high active signal 0V DC or V OUT High act...

Страница 71: ...ally open contact J3 4 J1 5 Common contact J3 5 K2 J1 6 Normally closed contact J3 6 K6 J1 7 Normally open contact J3 7 J1 8 Common contact J3 8 K3 J1 9 Normally closed contact J3 9 K7 J1 10 Normally...

Страница 72: ...Negative power supply 3 6 1 1 5 7 Table 38 J3 J4 J5 Connectors 11002 000 Lemo Connector Solid State Ion Chamber Number Refer to J3 Solid State AEC Chamber 4 J4 Solid State AEC Chamber 5 J5 Solid Stat...

Страница 73: ...a remote location Figure 3 2 Table 39 The selection of the appropriate set of exposure switch for a given workstation is done through the generator setup process Chapter 4 Fluoro Switches Two Fluoro s...

Страница 74: ...PREP switch J1 1 J2 1 J12 1 When low prep is initiated if footswitch enabled is set from the CPU RAD switch J1 2 J2 2 J12 2 When low RAD is initiated if footswitch enabled is set from the CPU and all...

Страница 75: ...puts J14 J15 pin 6 in Figure 3 3a and one trigger input for Fluoro to synchronize the exposure with the peripheral equipment The trigger pulse width must be 250 s The activation voltage depends on VTH...

Страница 76: ...EPS 45 80 High Voltage Generator 3 18 Technical Manual P N 9894 00 G6 Figure 3 3 b Different types of RAD trigger activation...

Страница 77: ...erwise Refer to Technical Manual Supplement P N 11050 011 in the electronic documentation CD I I Magnification inputs are used only on generators with High Performance Pulsed Fluoro Refer to Technical...

Страница 78: ...is inactive when VInput VThreshold Input is active when VInput x VThreshold Maximum 30 VDC 1 Board 11030 000 J3 connector 2 Programmable inputs with terminated resistor for different generator modes u...

Страница 79: ...h interlock at a different time during the exposure process as depicted in Figure 3 6 Refer to Chapter 4 to program the interlock inputs Table 42 Interlock Types Description Interlock Types Applicatio...

Страница 80: ...EPS 45 80 High Voltage Generator 3 22 Technical Manual P N 9894 00 G6 Figure 3 6 1 2 Interlock Ready Start shown in a serial RAD exposure...

Страница 81: ...3 Interfacing Technical Manual P N 9894 00 G6 3 23 Figure 3 6 2 2 Interlock X RAY shown in a RAD Fluoro...

Страница 82: ...and Fluoro can either use the same lines or instead use a distinct set of inputs See Chapter 4 System Setup When remote frame rate selection is enabled RAD and Fluoro are done at the operator console...

Страница 83: ...following conditions inasmuch as the lock input remains true i No kV correction by the kV mA correction algorithm for two consecutive pulses ii Occurrence of kV minimum or kV maximum iii Six consecut...

Страница 84: ...acing Description 1 2 Programmable relay contacts Section 3 5 4 2 J7 Line Filter Board 3 4 Power On relay Section 3 5 4 1 J1 and J3 Relay Expansion Board 1 thru 12 Optional relays Section 3 5 4 3 11 2...

Страница 85: ...vel is programmable from 4 to 24 V This is done using the Epsilon PC Tools program as described in Chapter 4 3 5 2 Types of Programmable Outputs Using the Epsilon PC Tools program every digital output...

Страница 86: ...dy Run and Run X In Fluoro the output lines can be activated independently during Low and High Fluoro levels These lines are described in Programmable Inputs Configuration Section 4 5 2 The generator...

Страница 87: ...nicity with the exposure all the times Figure 3 10 Typical X ray On and Main Gate signals Interfacing Diagram 3 5 2 4 Frame Rate Output Type Three 3 outputs can be used to provide the external world w...

Страница 88: ...to be active in Toggle or Momentary mode Section 4 5 2 Figure 3 11 Momentary output activation associated to a F1 key on the Epsilon operator console 3 5 3 Fast Digital Output Main Gate Output This op...

Страница 89: ...d P N 9916 00 with contact pins shown in Figure 3 12 contacts 20A 250V Refer to Section 4 5 2 to program the activation of the relay 24 V K1B K1A K2B K2 Progr Out 1 2 3 4 K2A J7 Figure 3 12 Line Filte...

Страница 90: ...ogr Out K4 Progr Out K5 Progr Out K6 Progr Out K7 Progr Out K8 Progr Out J1 J3 K5 N O K5 Common K5 N C K6 N O K6 Common K6 N C K7 N O K7 Common K7 N C K8 N O K8 Common K8 N C 1 2 3 4 5 6 7 8 9 10 11 1...

Страница 91: ...al boards using the same interfacing signals and pin out Notes 1 The ion chamber feedback signal pin 1 can ramp from 0 VDC up to 10 VDC 2 It is highly recommended that the ion chamber be electrically...

Страница 92: ...o Section 5 7 2 to fine tune the AEC using the film screen correction tables and the gain of the AEC feedback signal 3 6 1 2 Solid State AEC Chambers The optional Universal Chambers Interface board P...

Страница 93: ...about 12 5 mV to 9 V or from about 12 5 mV to 9 V Usable Photo multiplier tube input signal in RAD Brightness gain adjusted via the high voltage bias supply that varies from about 200 V to about 950...

Страница 94: ...ube To J5 BNC connector on the Fluoro PMT board Gain can be varied from about 200 V to about 950 V b From a photodiode To J6 BNC connector on the Fluoro PhD board Usable input signal range Continuous...

Страница 95: ...3 Interfacing Technical Manual P N 9894 00 G6 3 37 Figure 3 18 Connectors and potentiometers on Fluoro Boards Figure 3 19 Photomultiplier Tube Interfacing Diagram on Fluoro PMT board P N 9822 00...

Страница 96: ...the VTH Section 3 4 1 2 Figure 3 20 Pulsed Fluoro Interfacing 3 7 3 Fluoro Footswitch Interlocks Refer to Section 3 2 1 to interface the Fluoro pedals and to Section 3 4 2 for Fluoro Interlocks 3 7 4...

Страница 97: ...Computer Serial Port Pin Controller J16 Console J6 DB9 1 GND N C N U 2 TX TX RX 3 RX RX TX 4 DTR N C N U 5 GND GND GND 6 GND N C N U 7 RTS RTS RTS 8 CTS CTS CTS 9 GND N C N U Baud rate 57600 WARNING D...

Страница 98: ...rator power on Application of 0 VDC to 1 VDC turns the generator power off Current requirement approximately 1 mA Figure 3 21 Up J6 Generator Power On Off from External Console Below J10 RS 232 Commun...

Страница 99: ...16 4 4 TUBE SETUP 4 17 4 4 1 X ray Tube Selection 4 17 4 4 2 X ray Tube Derating 4 18 4 5 WORKSTATION CONFIGURATION 4 20 4 5 1 Workstation Configuration 4 20 RAD Exposure Types 4 23 AEC Devices 4 23...

Страница 100: ...8 Special Functions 3 17 AEC Density Correction 2 9 Workstation Selection 6 18 Patient Size 4 Operator Console Status Indicators A Tube Selection F Time Units Display B Focal Spot Selection G AEC Dens...

Страница 101: ...control 2 15 Menu selection keys 8 8 Workstation selection 5 LED status indicators 10 A Tube selection F mA mAs display B Focal spot selection G Irradiation time units display C System limits H Optic...

Страница 102: ...ection 5 5 11 Fluoro kV mA Curves Section 5 6 12 AEC Fine Tuning Section 5 7 4 1 GENERATOR POWER ON TEST HIGH VOLTAGE AC LINE CONNECTED POTENTIALS ARE PRESENT IN NUMEROUS CIRCUITS If the top cover is...

Страница 103: ...et key on the console until the Monitor Mode displays on the graphic screen Choose Inverters to invoke the Inverters Status screen Figure 4 3 Make sure that no BAD or FUSE status message displays on a...

Страница 104: ...te response and or click Next 4 2 2 Connecting the Generator to the PC Laptop 1 Connect the generator to your service computer For a RS 232 port Connect a standard RS 232 cable to link the generator t...

Страница 105: ...ting system 1 Have installed on your service computer the Epsilon PC Tools program and the USB Driver for emd Operator Console USB Driver_EMD Operator_Console zip These two files can be found on the e...

Страница 106: ...e the driver folder on your local disk 7 If the compatibility window displays Figure d right click the Continue Anyway button Note On some computers it is possible that the above installation steps sh...

Страница 107: ...nel Figure f Control Panel System System Properties Hardware Device Manager Ports COM LPT1 USB Serial Port EMD technologies settings COM n Figure e End of Installation Figure f Device Manager Figure g...

Страница 108: ...ys the Open File dialog box Figure 4 5 left from which an existing file can be selected and opened This will load the selected file and display the Workstation configuration screen of Figure 4 6 Choos...

Страница 109: ...us 1 2 3 4 4 Before beginning the setup of a generator it is wise to save the current blank file by using the menu File and Save As Use a file name that will clearly identify the generator For example...

Страница 110: ...luoro X ray tube configuration On certain EPS configurations the calibration data is identified on PC Tools user interface by its orange color appearance and can be transmitted using the right mouse b...

Страница 111: ...N The EPS generator comes in several possible configurations for example RAD only RAD Fluoro 2 tube configuration and with a certain number of optional expansion boards 1 Before beginning the setup of...

Страница 112: ...Options a Power Options Configuration i Power Type Set the Power type as per the following configuration table Power Type Type 7 Type 6 Type 5 Type 4 Max kW 80 kW 85 kW 90 kW 100 kW The power type con...

Страница 113: ...r information v Falling Load This option allows the generator to initiate an AEC mAs exposure at a higher tube current value after which the mA drops as the exposure proceeds c Fluoroscopy Options Con...

Страница 114: ...rted from the first free position available beginning from J4 right most connector Figure 4 10 Hardware Options Configuration b Other Options i Biplane Configuration For biplane configuration check th...

Страница 115: ...e Selection 1 Connect the generator to the computer and open the configuration file for your generator 2 With Epsilon PC Tools in communication mode Monitor Transfer select View and Tube to invoke the...

Страница 116: ...4 1 only Shall always be followed by a tube calibration Section 5 2 A tube can be derated to extend its usable lifetime to troubleshoot specific conditions or other reasons Derating any of the X ray t...

Страница 117: ...V Small Large Filament kW Output Small Large Filament Maximum Current Boost Brake Times 50 100 50 100 50 100 500 15000 ms If the maximum tube kV is subsequently increased on a derated X ray tube the m...

Страница 118: ...d application This is detailed in Sections 4 5 1 4 5 2 4 5 1 Workstation Configuration 1 Connect the generator to the computer and open the configuration file for the generator 2 With Epsilon PC Tools...

Страница 119: ...CKY 4 NON BUCKY 5 SPOT FILM 6 TOMO Epsilon CV Operator Console 1 CARDIAC kW 2 CARDIAC mA 3 D A 4 D S A 5 6 WARM UP For Operator Console P N 9777 31 only Note that the following associations are done b...

Страница 120: ...Hand Switch option is fitted on the generator 5 Assign the trigger input attached to the workstation Section 3 3 and specify its activation mode Trigger mode Start rising falling stop timer i Start r...

Страница 121: ...r ION 8 1 4 J5 connector ION 9 1 4 J4 connector Solid State Chamber 4 1 2 J3 connector Solid State Chamber 5 1 2 J4 connector Solid State Chamber 6 1 2 J5 connector Phototube PMT 3 J5 connector Photod...

Страница 122: ...r serial exposures i Setup the frame rate using the horizontal selection bars Figure 4 13 left Up to seven 7 frame rates are available For optimum friendliness enable only those frame rates that will...

Страница 123: ...RAD kV Transfer Function This curve is defaulted to 1 1 slope 0 b 0 and can be modified by moving one or both curves extremities The slope cannot be negative Figure 4 14 Fluoro RAD kV Transfer Functio...

Страница 124: ...nvoke the Programmable Inputs configuration screen Figure 4 15 The appearance of this screen varies as a function of the generator hardware Figure 4 15 Input Configuration Screen Programmable Inputs C...

Страница 125: ...terlock message on the console before the exposure process is initiated 2 Frame Rate Selection Bits 0 2 Remote selection of RAD and or Fluoro frame rate see Figure 4 13 F R selectable during Fluoro or...

Страница 126: ...Table 49 Select RAD and or Fluoro applications as necessary i Beware that the software configuration matches the hardware interfaced done in Chapter 3 ii For programmable outputs Table 49 item 4 setu...

Страница 127: ...nterlocks are true On the optional Epsilon Console the Prep LED lights on green Run or Run X Output goes low when WKS N is selected the system is ready Expose switch N is activated and all Start X ray...

Страница 128: ...nnot stop a RUN sequence in progress 3 The number of exposures allowed in the sequence has been performed In the case of a single exposure the Run output goes false after the exposure 1 BOTH Prep and...

Страница 129: ...se Continuous or Pulsed Fluoro When both Fluoro types are available Dual Fluoro mode can be enabled to allow the operator switching from Continuous to Pulsed Fluoro and vice versa Dual Fluoro mode is...

Страница 130: ...rge filament This value should be considered together with the adjustment of the Maximum Fluoroscopic Entrance Exposure Rate Section 5 4 SOURCE FOR ABS CONTROL Identify the source for the ABS Fluoro d...

Страница 131: ...chronize the Fluoro pulses It is recommended to set the trigger type to Start rising or falling stop timer Trigger mode Start rising falling stop timer Start rising falling stop rising falling Interna...

Страница 132: ...ble their selections using the checkbox located at their left For optimum friendliness enable only those pulse rates that will actually be used 2 If only one pulse rate is available you can disable th...

Страница 133: ...w technique chart must therefore be built with the following idea in mind Using an EPS generator t is possible that for a given mAs less kV is required to produce the same radiographic optical density...

Страница 134: ...aving one ascending parent on the APR network Usually moving between node levels of a given workstation is done by hitting as many keys on the Epsilon Console APR menu than there are levels to pass th...

Страница 135: ...2 key The focus is brought inside the name zone and you can now type over a new name do not use more than 10 characters Exam Deletion 6 The delete an exam select it and press the delete key or use the...

Страница 136: ...0 83 1 1 2 1 45 1 75 75 82 90 100 110 121 133 Optical density correction PMT or Photodiode Figure 4 20 Useful range of optical densities available in AEC mode v Choose the default focus vi Save the de...

Страница 137: ...select Console Setup Figure 4 21 2 Adjust the contrast and brightness of the console as desired Figure 4 21 C Adjust also the sound level of the console s alarm and beeping Press Save selection key to...

Страница 138: ...r Transfer select Tools Service History Log to invoke the History Log module Figure 4 22 3 Set Date and Time Use this button to synchronize the generator clock with the PC Figure 4 22 PC Tools in Serv...

Страница 139: ...ge on the Epsilon operator console Press Save selection key to apply the new language selection 3 Press Main selection key to return to the main menu 4 8 3 2 Console Language Translation Module The se...

Страница 140: ...the message screen and so on Figure 4 25 Each row allows up to ten characters for translation The short strings consist of a certain number of strings made out of a limited number of characters This...

Страница 141: ...ave as and transferring the data to the console Transfer Connect Send to Generator As long as the alphabet chosen is compatible with the local keyboard setting the proper characters should be displaye...

Страница 142: ...EPS 45 80 High Voltage Generator 4 44 Technical Manual P N 9894 00 G6 THIS PAGE LEFT BLANK...

Страница 143: ...5 4 1 Maximum Entrance Exposure Rate Adjustment 5 9 5 4 2 SPD Calibration Option 5 10 5 4 3 Image Enhancement Mode Calibration Option 5 10 5 5 FLUORO DOSE STABILIZATION BRIGHTNESS ADJUST 5 10 5 5 1 Co...

Страница 144: ...tool kit One 3 digit digital multimeter Optionally one 20 MHz dual trace storage oscilloscope with 2 probes One mAs meter such as Keithley Victoreen meters or equivalent One X ray dose meter reading u...

Страница 145: ...Anode Speed Starter P N 9962 04 Stator type DT1 Anode Speed Starter P N 9962 05 Stator type TS1 Anode Speed Starter P N 9962 06 Figure 5 1 a Anode Starter board P N 9962 xx NOTE For R and S standard...

Страница 146: ...tors Figure 5 1 b Anode Starter board P N 11104 xxx 2 Make sure that the configuration of the EPS Starter Board installed with your generator is appropriate for your tube rotor type Refer to the Confi...

Страница 147: ...2 Quick Fit Tabs A to T on Anode Starter board P N 11104 xxx 5 1 2 Pre Calibration Exposure Test Perform the following exposure at low kV low mA before doing the X ray tube calibration Section 5 2 If...

Страница 148: ...tor console invoke the service mode by pressing and holding down WS1 and power on keys Release WS1 key when the Service mode displays on the console Figure 5 3 a 2 Select the Tube Calibration Menu Ver...

Страница 149: ...y of filament current delivered for the current kV station Calib Done The generator has completed the calibration for the selected filament Calib Aborted The operator has cancelled the tube calibratio...

Страница 150: ...of the scope to TP18 test point 0 VDC 2 Set up the following 3 point exposure on a workstation 100 kV 200 mA x 100 ms 3 Trigger on the rising edge of channel 1 with a time base of 20 ms division 4 Pre...

Страница 151: ...ter in the X ray beam path at the exact stipulated distance from the image intensifier Make sure that the beam limiting device is fully open 2 On the operator console invoke the service mode by pressi...

Страница 152: ...ust the Fluoro image stabilization perform either procedure 5 5 1 or procedure 5 5 2 according to the equipment interfaced to the generator Use 5 5 1 to adjust the Fluoro Dose stabilization in Continu...

Страница 153: ...f the Fluoro pickup device Fluoro Low Level Potentiometer R _____ Fluoro High Level Potentiometer R _____ J3B 3 External brightness control No adjustment on the generator The gain control is selected...

Страница 154: ...an be made lower ABS ramp slow if necessary by moving the jumper on J10 connector Position 1 2 Normal gain for photodiode Position 2 3 Low gain for photodiode Slow ramp ABS Figure 5 7 Fluoro Dose Stab...

Страница 155: ...for your generator Use View menu to invoke the Fluoro configuration screen Click on General Fluoro Setup tab 3 Use a field procedure to adjust the nominal input voltage for Low Level Fluoro that will...

Страница 156: ...mum 125 kV and can be raised or lowered at the inferior kV stations The program will not let you programming a kV mA curve too steep that would compromise the Fluoro stabilization 1 Connect the genera...

Страница 157: ...uration 3 Refer to the manufacturer specifications to setup the ion chamber control voltage and signal polarity Epsilon PC tools View AEC Chambers Hardware tab Figure 5 10 left Control Voltage Operati...

Страница 158: ...pond to recommended figures for a default ion chamber 5 7 2 AEC Calibration Procedure 5 7 2 1 AEC Calibration Concept A AEC Feedback Gain Adjustment The end of an AEC exposure is detected at the AEC f...

Страница 159: ...en below in Table 54 Refer to Section 5 7 2 2 for the adjustment procedure of the film screen correction Table 54 Effect of AEC gain and Film Screen correction Gain of AEC Feedback Film screen related...

Страница 160: ...he AEC Setup module Figure 5 10 i Select the proper ion chamber 1 or 2 and choose one of the three film screen speeds ii Set the nominal input voltage for that film screen to 5 0 V iii Set the correct...

Страница 161: ...he gain value of the ion chamber until the desired optical density is achieved 10 With the same water level used in step 7 perform an A E C exposure at 42 kV and find the appropriate correction factor...

Страница 162: ...proper potentiometer on the Fluoro PMT board i Increasing clockwise the phototube sensitivity will decrease the image brightness ii Decreasing counter clockwise the phototube sensitivity will increase...

Страница 163: ...automatically adjusted to obtain optimal image brightness AEC Automatic Exposure Control in RAD mode In an X ray Generator mode of operation in which one or more loading factors are controlled automa...

Страница 164: ...focal spot selection is functional The APR selection is functional OK NO OK NO OK NO 4 Choose a serial exposure mode workstation a Verify that the frame rate selection is functional b Verify that the...

Страница 165: ...ctors of Table 56 and verify the accuracy of the tube kV in continuous mode The error of the measured X ray Tube Voltage of the different loading factors combination shall not be greater than 5 2 kV T...

Страница 166: ...accuracy of the tube mA Intermittent mode Table 57 Passed Failed 2 Do Fluoro using the loading factors of Table 58 and verify the accuracy of the tube mA in continuous mode Table 58 Passed Failed Tabl...

Страница 167: ...Measure ____ mA Test Passed Test Failed 6 2 3 mAs Accuracy Acceptance Test Logbook 4 11 Perform the two mAs exposures 2 using the loading factors of Table 59 and verify the accuracy of the tube mAs T...

Страница 168: ...of the irradiation time measured at 80 of the peak kV Table 60 Passed Failed Table 60 Irradiation Time Accuracy Requested Conditions Exposure 1 Shortest Time Result of test Highest kV Any mA 1 0 ms 1...

Страница 169: ...ion thicknesses of columns B C D NOTE If the linearity tests of section 6 4 are intended it is better to proceed with the following tests sequence A B C E D and F for more straightforward manipulation...

Страница 170: ...west kV Highest mA 10 ms T 320 ms LOADING FACTORS 40 kV ___ mA ___ ms Attenuation 4 mm Al Measure Calculate and Dose Xi i X X i X X 2 Exp shot 1 Exp shot 2 Exp shot 3 Standard Deviation i 1 X X n i n...

Страница 171: ...kV Lowest mA 10 ms T 320 ms LOADING FACTORS ___ kV 10 mA ___ ms Attenuation 44 mm Al Measure Calculate and Dose Xi i X X i X X 2 Exp shot 1 Exp shot 2 Exp shot 3 Standard Deviation i 1 X X n i n 1 2...

Страница 172: ...mA for 100 R Dose 500 R 10 ms T 320 ms LOADING FACTORS ___ kV ___ mA ___ ms Attenuation 24 mm Al Measure Calculate and Dose Xi i X X i X X 2 Exp shot 1 Exp shot 2 Exp shot 3 Standard Deviation i 1 X...

Страница 173: ...or 100 R Dose 500 R 10 ms T 320 ms LOADING FACTORS ___ kV ___ mA ___ ms Attenuation 40 mm Al Measure Calculate and Dose Xi i X X i X X 2 Exp shot 1 Exp shot 2 Exp shot 3 Standard Deviation i 1 X X n i...

Страница 174: ...using the loading factors and attenuation thicknesses of column F Table 66 Tests for verifying linearity see also Table 61 Test setting E F X ray Tube Voltage 50 of highest 80 of highest X ray Tube Cu...

Страница 175: ...above Test 6C 10 ms T 320 ms LOADING FACTORS ___ kV ___ mA ___ ms Attenuation 24 mm Al Measure and Calculate and Dose XEi mAs2 Exp shot 1 Exp shot 2 Exp shot 3 Dose mAs Test C Dose mAs Test E Exp sho...

Страница 176: ...ions above Test 6D 10 ms T 320 ms LOADING FACTORS ___ kV ___ mA ___ ms Attenuation 40 mm Al Measure and Calculate and Dose XFi mAs2 Exp shot 1 Exp shot 2 Exp shot 3 Dose mAs Test D Dose mAs Test F Exp...

Страница 177: ...e a series of 12 AEC irradiations at the loading factors and attenuation thickness of Table 69 and measure the optical densities of each radiograph Table 69 3 Calculate the AEC consistency for the dif...

Страница 178: ...tancy at same Phantom Thickness versus Adjacent Tube kVs KV Phantom Thickness Exp No O D Adjacent kV Exp No O D O D differs by 60 15 cm 6 _____ 80 1 _____ _____ 80 15 cm 1 _____ 100 7 _____ _____ 100...

Страница 179: ...____ ______ ______ 100 20 cm 12 ______ ______ ______ 120 10 cm 10 ______ ______ ______ 120 15 cm 8 ______ ______ ______ Optical Density Average _______ Compliance 0 20 Test Passed Test Failed Table 74...

Страница 180: ...d Timer functions Make sure the timer stops when the Fluoro footswitch is released Verify the function of the Timer Reset key 3 The alarm pulses pulsed alarm for the first 5 minutes and then changes f...

Страница 181: ...3 Epsilon PC Tools Diagnostic Mode 7 22 7 5 3 1 Monitor Module 7 22 7 5 3 2 History Log 7 25 7 5 3 3 Tube Calibration Viewer 7 27 7 5 3 4 Generator Calibration Module 7 28 7 5 4 Diagnostic Points 7 3...

Страница 182: ...7 1 4 Filament Selection 7 57 7 7 2 Description of AEC Modes 7 58 7 7 2 1 User Configurable Backup Time AEC Mode 7 58 7 7 2 2 Hidden Backup Time AEC Mode 7 58 7 7 2 3 Falling Load Mode 7 59 7 7 3 Gene...

Страница 183: ...r The Limits LED turns on for the duration of the condition and a specific message displays in the graphic screen The message stays on until the technique factors are sufficiently reduced by the opera...

Страница 184: ...exposure immediately and displays the END of EXP B U T message in the graphic display In this condition the generator can only be reset by pressing the Fault Reset key Table 75 End of Exposure Visual...

Страница 185: ...H U over 80 alarm Pulsed tone 2 beeps per second Exposure Fault and B U T alarms 4 consecutive beeps 3 The tone lasts for the duration of the X ray exposure 1 4 second minimum 7 4 OPERATOR MESSAGES T...

Страница 186: ...t of an inverter problem by cycling the power is a palliative means only the generator is available for x rays but it will probably operate at reduced power output capacity In that mode the message Po...

Страница 187: ...on mode and the maximum pulse rate is halved Until the cable discharge unit internal temperature is below 70 C the pulse rate cannot be increased manually up to the maximum value and the Image Enhance...

Страница 188: ...set the message and try to repeat the exposure Check the AEC device circuit EXPOSURE ABORTED B U TIME Fault Message The AEC exposure terminated abnormally the AEC device has not been able to detect th...

Страница 189: ...d restart PC Tools program If the message error persists go to the history log take note of the error code for that fault and direct it to Emd GENERATOR COOLING DELAY No Exposure Allowed The generator...

Страница 190: ...ctions not supported by the workstation configuration Select a valid frame rate to continue and save the new exam to correct this condition INVALID ION SELECTION No Exposure Allowed This fault results...

Страница 191: ...ve Message An Inverter problem has been latched by the generator and the operator has acknowledged it by doing a power off on cycle The generator will operate at power reduced It is recommended to ver...

Страница 192: ...SWITCH FAILURE Informative Message The stator current monitoring is out of tolerance and the exposure preparation aborts Try to repeat the exposure If the message persists refer to the Rotor Controlle...

Страница 193: ...t The generator goes through a self test routine every time it is turned on or the service mode is exited 1 Verify that no fault is detected on the console during a power on initialization process 2 A...

Страница 194: ...Console in Service Mode In service mode invoke the monitor mode by pressing System and Monitor keys Figure 7 4 The different options are discussed in the following sections ___________________________...

Страница 195: ...replacement of an Inverter board NOTE A more complete picture of the 3 Phase Inverter board functionality is available in a different register as described in Section 7 5 2 6 This hardware register wi...

Страница 196: ...Inverter board s with a blown fuse Number of Dummy board s in the generator between 0 and 2 8 4 good Inverter boards in the generator One or more Inverter board s with a blown fuse Number of Dummy boa...

Страница 197: ...1 2 4 7 Conditions 1 2 4 8 Console H W problem 8 User Power Supply problem 9 Rotor Controller H W Fault 9 Controller Board unusable A Options incompatibility A Power Supply Board unusable B Condition...

Страница 198: ...ftware Biplane only p 6 6 CON2 Console Software N U Figure 7 7 Software Version Viewer 7 5 2 5 History Log Significant events occurring during the operation of the generator are tracked and logged in...

Страница 199: ...ins a conflicting status An Inverter Problem message is displayed on the console at power up The status must be corrected by the service representative Figure 7 9 In Service Mode select System Setup M...

Страница 200: ...1 No change 2 Continue 1 Write BAD 2 Stop IFR 1 No change 2 Stop 1 Write STOP 2 Stop 1 Write BAD 2 Stop 1 No change 2 Continue 1 No change 2 Continue Legend Dummy A Dummy board is installed I fuse rai...

Страница 201: ...e done on the small focal spot LRG The number of exposure done on the large focal spot AG Number of Anode to Ground arcs AK Number of Anode to Cathode arcs KG Number of Cathode to Ground arcs 100 Numb...

Страница 202: ...Refer to Section 7 5 2 5 for details v Inverters option In this mode the status of the 3 Phase Inverter boards is given to the operator but it cannot be modified The Inverters registry can be updated...

Страница 203: ...dicates in which state the generator is in now Init Initialization of the generator Idle The generator is in wait mode Fault The generator is in fault mode Prep The prep switch is active Ready The pre...

Страница 204: ...location Fix button Use this button to reset the Inverter Status Register for instance when an Inverter board is replaced The generator does a re initialization process to validate the reset Table 83...

Страница 205: ...event was logged June 28 2006 and the devices that have captured the events XRAY p CIO p or CON p The data column displays internal information only Figure 7 13 History Log of the Epsilon PC Tools Se...

Страница 206: ...ons Over kV Number of occurrences of Over KV fault Power Quality The Power Quality figure has an effect over the maximum kW admitted for an exposure The power quality percent is measured and refreshed...

Страница 207: ...14 Tube Calibration Viewer of the Epsilon PC Tools Service Module It is also possible to transfer the tube calibration from a connected computer to the generator using the Send to generator button Th...

Страница 208: ...ed certain console parameters brightness volume contrast the software A D device gain factors for RAD and Fluoro ABS stabilization and others When you open this screen for the first time make sure to...

Страница 209: ...he Copy Fluoro Factors function is available in manual Pulsed Fluoro In that mode depressing F1 function key sets up the RAD technique in two point mAs mode with the kV equals to the actual Fluoro kV...

Страница 210: ...00 G6 7 5 4 Diagnostic Points Use this section to explore the different diagnostic points available on the Controller board and elsewhere Diagnostic points are test points LEDs jumpers 7 5 4 1 Contro...

Страница 211: ...abled 5 V Filaments enabled Normal state 0 V Filament Disabled Filament Fault TP8 Standby IFIL feedback 1 V 1 A TP16 Main I FIL select 1 V 2 A TP14 15 mAs meter Use an mAs meter to read the real tube...

Страница 212: ...nical Manual P N 9894 00 G6 Typical Waveforms Typical Exposure 100 kV 500 mA Typical Exposure 100 kV Anode Cathode Typical Exposure 100 kV 500 mA Typical AEC Exposure 100 kV Typical AEC Exposure 40 kV...

Страница 213: ...be changed to 12 VDC by moving the jumper to between positions 2 and 3 The input voltage threshold value will then be half the value of the reference VTH VREF 2 J9 jumper Threshold input voltage Pins...

Страница 214: ...n Fluoro PMT board P N 9822 00 Table 86 Jumpers available on Fluoro PhD board P N 11030 000 o J8 Leave jumper in position 1 2 o J10 Jumper in position 1 2 Normal gain for photodiode Jumper in position...

Страница 215: ...e red led is used as a two digit code to signal fault conditions See below X1 X2 2 bit CODE X1 X2 Fault Description 1 1 Hardware Fault Defective H S Starter Contact Manufacturer 1 2 Overtime Fault Too...

Страница 216: ...o 4 are repeated 7 5 4 5 Optional Cable Discharge Interface Board P N 11206 000 This optional board is present on certain EPS cardiac configurations Table 88 Diagnostic LEDs on Cable Discharge Interfa...

Страница 217: ...ins entry panel for at least 5 minutes before removing the top panel of the generator for board replacement Do not install or remove any component or board when the power is on Even when the generator...

Страница 218: ...ase Inverter boards are present on the generator no other boards in positions 3 thru 6 1 Make sure the generator is turned off at the mains line disconnect box 2 Make sure the generator is completely...

Страница 219: ...ifting them upward Figure 7 22 Access panels of Epsilon generator 6 Use the card ejectors on the two extremities of the board to unplug and extract the board from the fuse clip connectors on the mothe...

Страница 220: ...EPS 45 80 High Voltage generator 10 Before replacing the covers do a power on test to validate the installation Warning Lethal High Voltage AC line connected potentials are present on many components...

Страница 221: ...cal Manual P N 9894 00 G6 7 41 BACK OF EPSILON GENERATOR FRONT OF EPSILON GENERATOR Figure 7 24 Replaceable PCBs on the Motherboard Top view Note the number of Inverter boards varies from 2 to 6 accor...

Страница 222: ...he generator power is turned off at the mains entry panel for at least 5 minutes Do not install or remove any component or board when the power is on Even when the generator is switched off at the ope...

Страница 223: ...al Manual P N 9894 00 G6 7 43 Figure 7 25 Replacement of EPS 45 80 Generator Basket 1 10 Figure 7 26 Replacement of EPS 45 80 Generator Basket 2 10 Push the assembly downward to disconnect the Control...

Страница 224: ...hnical Manual P N 9894 00 G6 Figure 7 27 Replacement of EPS 45 80 Generator Basket 3 10 Detail of top connector when disconnected Figure 7 28 Replacement of EPS 45 80 Generator Basket 4 10 Pull the as...

Страница 225: ...f EPS 45 80 Generator Basket 5 10 Undo all internal connections Figure 7 30 Replacement of EPS 45 80 Generator Basket 6 10 Filament Connections no polarity to be respected for these connections Power...

Страница 226: ...he bottom of the chassis assembly when the basket will be placed to its final position see 2 Figure 7 31 9 Reconnect all cables to the High Voltage units a Make sure the cables do no cross high freque...

Страница 227: ...tor Basket 8 10 Ideal positioning of cables before flipping back the basket into position 11 Place the basket assembly toward the main chassis and move it upward to insert the top connector Figure 7 3...

Страница 228: ...rator is finally assembled as per the previous section instructions it is now time to upload the firmware in the generator 1 Refer to Section 7 6 5 to upload the firmware if necessary 2 Take note of a...

Страница 229: ...sure the generator is turned off at the mains line disconnect box 2 Verify that the Power ON neon lamp on the High Voltage Power Supply unit is turned off 3 Undo all connections on the Fluoro PMT boar...

Страница 230: ...message is displayed on the operator console To replace the battery 1 Turn off all powers to the generator 2 Take off the Controller Access Panel as seen in Figure 7 35 below 4 screws to undo Locatin...

Страница 231: ...the status from FUSE to OK and press Save key 3 To replace a fuse use the following part number and or fuse rating Inverter Board Fuses Fast Acting Midget Fuses 20AMPS 500VAC DC Dimensions 13 32 diame...

Страница 232: ...ware Section 8 2 3 5 Updating the CIO or Console firmware will result in the replacement of important configuration data Make sure to have a backup of the generator configuration data before loading n...

Страница 233: ...te device firmware button CIO XRAY or CONSOLE to launch the data transfer from the PC to the generator Note CIO2 XRAY2 devices are used only on a biplane generator configuration CONSOLE2 device is not...

Страница 234: ...and 6 5 Remove the chip and replace it with the new one Take care at the chip key pin 1 Figure 7 37 U1 Options Chip on the Motherboard 6 Reinstall the Inverters or Dummy boards When reinstalling the...

Страница 235: ...F OPERATION 7 7 1 Functional Blocks The following functional block diagrams are provided as a high level explanation of the principles of operation for the Epsilon HF High Voltage generators 7 7 1 1 k...

Страница 236: ...r power on and one for power off for the generator The common pin of both switches is tied to pin 8 of connector J7 The second pin of the On switch is tied through a 470 ohm 1 4 watt resistor to pin 1...

Страница 237: ...bleshooting Servicing Technical Manual P N 9894 00 G6 7 57 7 7 1 3 mA Control Figure 7 40 Principles of Operation mA Control 7 7 1 4 Filament Selection Figure 7 41 Principles of Operation Filament Sel...

Страница 238: ...ive when the Hidden AEC Backup bit option is set AEC Exposure using kV mA factors 1 The value of kV comes from the exam and is keyboard modifiable by the user 2 The value of mA comes from the exam and...

Страница 239: ...shing decimal point The mA mAs display will return dark when any console key or foot switch is pressed 7 The value of mAs could be displayed in the graphic display as in any mAs mode 7 7 2 3 Falling L...

Страница 240: ...Client I O tc file data 3 Tube calibration data gc file data 4 Generator calibration data stored in all three C sl file data 5 Second Language data 7 7 3 2 Integrity of Data All data transfers betwee...

Страница 241: ...three micro controllers and fixed at the time of data transfer from PC Tools At power on and periodically during operation the check sums is verified and if an error is detected a message displays and...

Страница 242: ...J4 J16 PC Epsilon PC Tools Console RS232 J7 J6 USB Figure 7 45 Console Communication Patterns with PC and Epsilon generator NOTE USB connection is available on Epsilon Operator Consoles P N 9777 21 an...

Страница 243: ...site after an intervention the service representative can perform the following tests to make sure the system works fine 1 Perform the exposure tests of Section 5 3 Output kV and mAs Verification on t...

Страница 244: ...EPS 45 80 High Voltage Generator 7 64 Technical Manual P N 9894 00 G6 THIS PAGE LEFT BLANK...

Страница 245: ...8 3 8 2 2 2 Deadman Exposure Switch 8 3 8 2 2 3 Fluoro Indicators 8 4 8 2 2 4 X Ray Disable Switch 8 4 8 2 3 Annual Maintenance Procedure 8 4 8 2 3 1 Labels Inspection 8 4 8 2 3 2 Cable Tightness Wea...

Страница 246: ...dicators Section 8 2 2 Visual exposure indicator Audible exposure indicator Fluoro timer alarm Deadman exposure switch Annual 1 Labels inspection 8 2 3 1 2 Cable Tightness 8 2 3 2 3 System Grounding I...

Страница 247: ...loth High Voltage Power Supply It is recommended to remove the dust on the exposed panels of the unit once a year using a vacuum cleaner 8 2 2 Exposure Indicators 8 2 2 1 RAD Exposure Indicators 1 Pre...

Страница 248: ...y production Verify the functionality of this button 8 2 3 Annual Maintenance Procedure 8 2 3 1 Labels Inspection With all powers turned off verify that the warning labels have not been defaced or wor...

Страница 249: ...set up shall be transferred to your computer When finished the console shall return to the normal operator mode usually displaying the WS1 menu 5 emd File emd Save the generator data of this emd file...

Страница 250: ...visible in the AEC menu of PC Tools for the selected Ion Chamber for the Medium Film Screen For these tests place the correction table values to all zeros for the medium film screen 4 Connect an osci...

Страница 251: ...t correctly and can be adjusted in the AEC menu of Epsilon PC Tools If the chamber signal does not rise at all or nearly not at all but does rise when only the center field of the chamber is selected...

Страница 252: ...oller Power Supply Ass y Generator Basket P N 9910 00 Client IO Software P N 9810 01 Epsilon Operator Console P N 9777 xx Fluoro PMT Board P N 9822 00 Console Cable P N 10015 xxx Console Software P N...

Страница 253: ..._______ Optional Operator Console EPS _________ Serial number __________ Optional EPS Starter Board Low Speed High Speed Stator Type _________ 9 1 3 Generator Accessories X ray Tube Model _________ Se...

Страница 254: ...Probe Manufacturer Model Serial N Last Calibration Date mAs meter Manufacturer Model Serial N Last Calibration Date 9 2 GENERATOR INSTALLATION 9 2 1 Inspection of Material upon Reception Drop N Tell I...

Страница 255: ...fault Wks Fluoro Enabled Default Fluoro Speed _____ Continuance _____ J12 Switch J2 Switch Console Source ______ F S S M F Fields L C R PMT Phd Gain ______ 3 pts 2 pts AEC mA AEC mAs AEC zero Tomo 4 N...

Страница 256: ...7 _________ 9 3 1 2 Fluoro Configuration General ABS Control Fluoro Factors Anode Speed __________ SID Enabled Manual Mode Alarm Timer __________ Source ______ Hi Fluoro Gain ______ Lo Fluoro Gain ___...

Страница 257: ...R bit 2 Fluoro F R bit 0 Fluoro F R bit 1 Fluoro F R bit 2 AEC Lock Interlock Idle Interlock Ready Interlock Start Interlock X ray Interlock Fluoro AEC Reset 1 2 3 4 5 6 Fluoro J14 2 J14 3 J14 4 J14...

Страница 258: ...w State Fluoro High State Fault State Heat Units Over n 1 2 3 4 5 6 Fluoro J14 7 J14 8 J14 9 J15A 7 J15A 8 J15B 1 J15B 5 J15B 6 J3A 7 J3A 8 J3B 1 J3B 5 J3 4 J3 5 LFB J7 1 2 K1 K8 On Fluoro PMT Board P...

Страница 259: ...ng range Test 50 kV 10 mA 200 ms ______ kV _______ ms 45 5 kV 54 5 189 8 ms 210 2 Pass Fail Pass Fail System Calibrated Exposure Test Verification Section 5 3 1 Exposure Measured values Tube loading R...

Страница 260: ...Maximum mA Low Level mA Pulsed width Low Level ms Maximum mA High Level mA Pulsed width High Level ms 9 5 3 ABS Mode Adjustment Section 5 6 ABS1 ABS2 Enabled ABS3 Enabled ABS4 Enabled kV station of d...

Страница 261: ...Fluoro VNOM ______ VNOM ______ 9 5 4 Image AEC Brightness Devices Control Device Workstations Adjustment D A device W S _____ W S _____ W S _____ Gain set to 1 thru 100 _________ _________ _________...

Страница 262: ...lts Integrator Reset Polarity Low High 9 5 6 Film Screen Combinations AEC Feedback Gain Section 5 7 2 Ion Chamber 1 Ion Chamber 2 Ion Chamber 3 Slow Med Fast Slow Med Fast Fast Med Fast VNOM kV Factor...

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