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AR 500T2G8 Operating And Service Manual

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Operating and
Service Manual
500T2G8
Model
10006896
Part Number
Serial Number
160 School House Road, Souderton, PA 18964 • 215-723-8181 • Fax 215-723-5688 • www.arworld.us

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  • Page 1 Operating and Service Manual 500T2G8 Model 10006896 Part Number Serial Number 160 School House Road, Souderton, PA 18964 • 215-723-8181 • Fax 215-723-5688 • www.arworld.us...
  • Page 3 Amplifier Research 160 School House Road Souderton, PA. 18964 declare that our product(s); the Model 500T2G8 Series RF amplifiers to which this declaration relates is in compliance with the following European directives: Low Voltage Directive: 2014/35/EU EMC Directive: 2014/30/EU Supplementary Information:...
  • Page 5 BEFORE APPLYING POWER Indicates a terminal intended for connection to Your AR equipment may have more than one power supply an external conductor for protection against cable. Use only approved power cable(s). If you have not been...
  • Page 6 EQUIPMENT CONTAINING LASERS should fundamental AR Field Probes (FL/PL Series) and Field Analyzers consideration of every user. An (FA Series) are Class 1 laser products containing authoritative guideline for eliminating unwarranted risk of embedded Class 4 lasers. Under normal use, the...
  • Page 7 ADDITIONAL WARNINGS & NOTES WARNING: This equipment operates at potentially lethal voltages. Only trained, qualified personnel should operate, maintain, or service it. Hazardous energy may be present while protective covers are removed from the equipment even if disconnected from the power source. Contact may result in personal injury.
  • Page 8 Model 500T2G8...
  • Page 9 Suggested Periodic Maintenance for TWT Amplifiers 1. Keep monthly log of the voltages, currents and temperatures as shown on Menus. Also record Date, “Console” and “Operate” hours. Take readings in Operate mode with the gain at zero (0%) percent. Leave unit in Operate mode for 20 minutes (Max Duty if Pulsed Unit), and then record data.

  • Page 11: Table Of Contents

    Top Level Build Tree ................... 35 5.1.1 Three Phase ......................35 5.1.2 Single Phase ......................36 5.1.3 500 Watt TWT Amplifier SC-Band Single Phase AR with Sample and Input Connectors on Front Panel ................... 37 Schematics ......................39 Parts Lists ......................41...
  • Page 12 Model 500T2G8 5.3.1 Parts List, HPA Logic and Control Module, A16485-000 ......... 42 5.3.2 Parts List, Power Supply for TWT 5196/5296 , 3 A22826-500 ......44 5.3.3 Parts List, Power Supply for TWT 5196 /5296 , 1 A22826-501 ......45 5.3.4...

  • Page 13: Description And Specifications

    This manual provides operating, interfacing and selected service information pertinent to AR RF/Microwave Instrumentation Model 500T2G8 Broadband Microwave Amplifier. The Model 500T2G8 is a 500 watt S/C band traveling-wave tube amplifier (TWTA). This manual supports models offering three phase and single phase operation, as well models offering additional special features.

  • Page 14: Accessories

    Model 500T2G8 ACCESSORIES AR RF/Microwave Instrumentation offers a number of accessories for use with this amplifier including: • Directional coupler • Antenna • Flexible transmission line Refer to a current AR RF/Microwave Instrumentation catalog for Microwave Accessories. TEST DATA SHEET A Test Data Sheet for a specific unit is prepared at the time of manufacture and is included with the unit's copy of this manual.
  • Page 15 Specifications Features The Model 500T2G8 is a self-contained, forced perature. Modular design of the power supply 500T2G8 air cooled, broadband traveling wave tube and RF components allow for easy access and (TWT) microwave amplifier designed for applica- repair. Use of a switching mode power supply tions where instantaneous bandwidth and high results in significant weight reduction.
  • Page 16 Specifications Page 2 POWER (fundamental), CW, @ Output Connector: MODULATION CAPABLITY: Will faithfully reproduce 500T2G8 Nominal 541 watts AM, FM, or pulse modulation appearing on the input Minimum 500 watts signal. AM peak envelope power limited to specified Linear @ 1 dB Compression 125 watts minimum power.
  • Page 17 S1R & S5V S1R & S5V S4P & S5V S4P & S5V S4P & S5V To order AR Products, call 215.723.8181. For an applications engineer call:800.933.8181. Direct to Service call: 215.723.0275 or email: service@arworld.us For Faxing Orders:866.859.0582 (Orders Only Please) info@arworld.us...

  • Page 19: Theory Of Operation

    2. THEORY OF OPERATION DESIGN OF THE AMPLIFIER The Model 500T2G8 TWT amplifier consists of four principal subsystems. Two of these subsystems, the microwave power assembly and the TWT power supply are discussed in Sections 2.2 and 2.3, respectively. The other two subsystems are the microprocessor control system and the TWTA packaging. These both consist of a number of subassemblies.

  • Page 20: Description Of The Power Supply

    Model 500T2G8 emergency bypass operation (see Section 3.7) the gain control signal is provided locally by means of a potentiometer on the emergency bypass board. However, the foldback circuit remains on line in emergency bypass operation. DESCRIPTION OF THE POWER SUPPLY The single phase version (A22525-311) is described.

  • Page 21: Operation

    3. OPERATION WARNINGS AND CAUTIONS Throughout this manual, the symbol: WARNING: indicates that a hazard exists that may result in personal injury or loss of life. CAUTION: indicates that failure to follow procedures may result in damage to the equipment. WARNING: DANGER - High Voltage Present: Electrical equipment in this TWTA generates and stores high-voltage energy that can result in fatal electrocution.

  • Page 22: Mounting And Removing

    Model 500T2G8 3.2.2 Mounting and Removing The TWTA may be operated as a standalone benchtop unit, or it may be installed in a 19" rack. If rack mounting is desired, first remove the amplifier from the cabinet, then install the amplifier in the rack.

  • Page 23: Cooling Requirements

    Model 500T2G8 3.2.3 Cooling Requirements The TWTA is provided with a cooling fan. It is important that air movement around the rear of the unit be unobstructed. CAUTION: For either bench or rack mounting, do not position the TWTA in such a way that the air intake or outlet are blocked, or that the exhaust flow is directed into the intake.

  • Page 24: Rf Output Connections

    Model 500T2G8 Color Function International Harmonized North American Brown Black Line Blue White Neutral Yellow/Green Green Safety Ground CAUTION: Connect plug to J1 and secure plug with bracket only when no AC is supplied to the cord. Some amplifiers for the North American market may be provided with a suitably terminated power cord.
  • Page 25 Model 500T2G8 CAUTION: Do not rely on the external interlock for personnel protection. The intent of the external interlock feature is to disable the RF output for equipment protection. Use proper operating and safety procedures to insure that power is removed for personnel safety.

  • Page 26: Front Panel Features

    Model 500T2G8 FRONT PANEL FEATURES Refer to Figure 3-2 below. Figure 3-2. Front Panel Features Table 3-1. Front Panel Features Item Title Function MAIN POWER Switchable 15 A. circuit breaker; connects primary power to power supplies. OPERATE Push-button; turns on high voltage when all faults and heater delay are cleared.

  • Page 27: Front Panel Display And Soft Keys

    Model 500T2G8 FRONT PANEL DISPLAY AND SOFT KEYS The purpose of the front panel display is to permit the operator to access extensive information about the condition and operation of the TWTA. To accomplish this, a number of informational screens are programmed.
  • Page 28 Model 500T2G8 Menu screens - The screens at the highest level are called menu screens. There are four menu screens. At power on, the MENU 1 screen is displayed. Each of the menu screens has the soft key S4 labeled MORE. The MORE key (S4) causes the next menu screen to appear.
  • Page 29 Model 500T2G8 To activate Sleep Mode locally: Press the MORE soft key to get to MENU 2. At MENU 2 press the SETUP soft key to get to SETUP 1. At SETUP 1 press SET to activate Sleep Mode (turn heater and fan off). The system will ask Are you sure? Press SET again.
  • Page 30 Model 500T2G8 System Shutdown Screen - In the event of a system shutdown due to a latched fault (i. e., a fault such as body overcurrent or power low line that requires a reset), the MENU screen is replaced by a screen indicating the nature of the fault.

  • Page 31: Rear Panel Features

    Model 500T2G8 REAR PANEL FEATURES See Figure 3-4 below. Figure 3-4. Rear Panel Features Table 3-2. Rear Panel Features Item Title Function AC POWER IN AC power input strain relief (single phase model shown) IEEE-488 Remote control connector: 24 pin hermaphrodite...

  • Page 32: Emergency Bypass Operation

    Model 500T2G8 The load VSWR under power can be checked by using a power meter with suitable attenuators connected to the RF reflected sample out port A2J3. Refer to the RF reflected sample port calibration factors on the rear of the unit.

  • Page 33: Remote Ieee-488 Operation

    Model 500T2G8 To access the manual controls, remove the two 4-40 screws securing the emergency switch cover on the front panel. Emergency bypass mode is selected by pushing the left-hand switch (S1) to the left. The center switch (S2) toggles between high voltage on (left) and high voltage off (right). The right-hand switch (S3) selects beam on in the left hand position, and beam off (RF off) in the right-hand position.
  • Page 34 Model 500T2G8 Command Function Units Response format SPSOTC Sets p. s. overtemp warning setpoint (°C) °C RDIWOC Returns helix overcurrent warning setpoint IwOC=[ ] SIWOC Sets helix overcurrent warning setpoint RDLOGIC Returns logic state code (see Table 3-6) Sys=[ ]...

  • Page 35: Catalog Of Status Codes

    Model 500T2G8 Table 3-4. Catalog of Status Codes (The RDSTAT command causes the TWTA to return a string in the form STATUS=[code], where [code] is an ASCII number whose meaning is given below) Status Code Meaning No command was given or last command was successful.

  • Page 36: Catalog Of System State Codes

    Model 500T2G8 Table 3-6. Catalog of System State Codes (The RDLOGIC command causes the TWTA to send a string containing an operational state code consisting of 4 ASCII characters representing hex digits. The response is in the form Sys=[w][x][y][z][eol] where the...

  • Page 37: Stb?; Response Codes

    Model 500T2G8 Table 3-8. *STB?; Response Codes (The command *STB?; causes the TWTA to send a string containing an operational state code consisting of 2 ASCII characters representing hex digits. The response is in the form STATUS:[x][y][eol] where the hex...

  • Page 38: Twta General Considerations

    Operate mode may be selected again. This procedure may be repeated, if needed up to 25 times, until the Operate mode is actually set. If this condition persists, contact AR Customer Service for additional assistance. (See Explanation of…, below) Noise Power Density (NPD): TWTAs produce rf noise over their operating frequency range, as specified by the Noise Power Density (NPD).
  • Page 39 Model 500T2G8 accumulates and results in a significant indication in a broadband measurement device – such as a power meter or field probe. The error produced by this indication is not significant when operating near rated TWTA power levels, but may cause difficulty when trying to operate high power TWTAs at low output power levels..
  • Page 40 Model 500T2G8 Rev E...

  • Page 41: Maintenance

    4. MAINTENANCE The TWTA does not require routine scheduled maintenance. The only moving parts are the elements of switches, relays and the blower. Preventive maintenance is recommended in Section 4.3. The TWTA is basically a factory repairable unit. However, since limited logic schematics and partial parts information is supplied in this manual (Section 5) some user service organizations may choose to perform their own corrective maintenance.

  • Page 42: Troubleshooting

    Model 500T2G8 To open the enclosure: 1. Remove the amplifier from the cabinet or rack as follows: NOTE: Due to the weight of the unit, the removal of the amplifier from the cabinet or rack is a two person operation.

  • Page 43: Non-Repairable Modules

    Model 500T2G8 NON-REPAIRABLE MODULES The High Voltage Diode/Cap Assembly (A21425-296), the High Voltage Filter Assembly (A21461-500), the Grid Modulator Assembly (A21422-000), and the Heater Supply (A10010-000) are encapsulated modules and are not repairable. Contact an authorized service representative if replacement modules are needed.
  • Page 44 Model 500T2G8 Rev E...

  • Page 45: Technical Documentation

    4. TECHNICAL DOCUMENTATION NOTE The purpose of this technical documentation section is to provide a guide to the TWTA for technician- level servicing. It is intended for use by qualified technical personnel who must troubleshoot and repair the TWTA in the field. Such repairs are typically limited to replacement of modules or major components.
  • Page 46 Model 500T2G8 Rev E...

  • Page 47: Top Level Build Tree

    GPIB/LINK TRANSCEIVER BOARD A25444-000 HPA INTERFACE BOARD (PLASTIC FIBERS) A23692-000 INSULATED FAN DRIVER 1A6T1 A09594-000 FAN DRIVER TRANSFORMER A26862-000 HPA WIRING KIT, AR 500T SC 1A7A10 A24830-001 EMERGENCY BYPASS BOARD A26858-000 HPA CABINET AR 500T SC BAND 3 PHASE Rev E...

  • Page 48: Single Phase

    A25444-000 HPA INTERFACE BOARD (PLASTIC FIBERS) A23692-000 INSULATED FAN DRIVER 1A6T1 A09594-000 FAN DRIVER TRANSFORMER A26862-001 HPA WIRING KIT, AR 500T SC SINGLE PHASE 1A7XJ1 A30346-000 EMI MODIFICATION KIT FOR 400KU 1A7XJ1A1 A28181-000 POWER ENTRY FILTER BOARD A26858-001 HPA CABINET AR 500T SC BAND 1 PHASE...

  • Page 49: 500 Watt Twt Amplifier Sc-Band Single Phase Ar With Sample And Input Connectors On Front Panel

    1A1A6A A21425-296 DIODE CAP ASSY FOR TWT 5296 1A1A6AT1 A09578-000 HV XFMR FOR TWT 5296 MICROWAVE POWER ASSY FOR 500T SC FOR AR UNITS WITH A26857-005 7/16 CONNECTOR OUTPUT A26856-007 FRONT PANEL ASSY AR 500WATT L-BAND SINGLE PHASE 1A3A1 A22700-900...
  • Page 50 Model 500T2G8 Rev E...

  • Page 51: Schematics

    Model 500T2G8 SCHEMATICS 10-16485-000 HPA Logic and Control (A16485-000) 10-24830-000 Emergency Bypass Board (A24830-001) 10-26901-311 500W TWT Amplifier, SC Band, Single Phase, AR (A26901-311) 10-25444-000 HPA Interface (A25444-000) Rev E...
  • Page 52 Model 500T2G8 Rev E...

  • Page 53: Parts Lists

    Model 500T2G8 PARTS LISTS A16485-000 HPA logic and control assembly A22826-500 500W SC-Band Power Supply, Three Phase A22826-501 500W SC-Band Power Supply, Single Phase A24830-001 Emergency Bypass Board A25444-000 HPA interface board A26857-003 Microwave Power Assembly, 500W SC-Band A26901-311 500W SC-Band TWT Amplifier, Single Phase...

  • Page 54: Parts List, Hpa Logic And Control Module, A16485-000

    Model 500T2G8 5.3.1 Parts List, HPA Logic and Control Module, A16485-000 REF. DESIG. ETM P/N DESCRIPTION QUANTITY B16485-000 HPA LOGIC AND CONTROL BOARD C16333-000 CAP,33MF,25V,AERL,(NICHICON UVX1E330M) C2, C5, C15, C58 C31028-000 CAP,1000PF,200VDC,10%,CER,1% FAILURE,(KEMET CKR05 SERIES W/"V" OPTION) C3, C9, C10, C13, C14, C17, C31032-000 CAP,0.01MF,200VDC,10%,CER,1% FAILURE,(KEMET...
  • Page 55 Model 500T2G8 REF. DESIG. ETM P/N DESCRIPTION QUANTITY R47, R48 R22200-000 RES,20K,1/2W,1%,MF,100PPM,(DALE RN55D) R79, R80 R22470-000 RES,47K,1/2W,1%,MF,100PPM,(DALE RN55D) R42, R60, R61, R89 R23100-000 RES,100K,1/2W,1%,MF,100PPM,(DALE RN55D) R33, R55 R23698-000 RES,698K,1/2W,1%,MF,100PPM,(DALE RN55D) R23750-000 RES,750K,1/2W,1%,MF,100PPM,(DALE RN55D) R23845-000 RES,845K,1/2W,1%,MF,100PPM,(DALE RN55D) R23953-000 RES,953K,1/2W,1%,MF,100PPM,(DALE RN55D) R12, R15...

  • Page 56: Parts List, Power Supply For Twt 5196/5296 , 3 A22826-500

    ETM P/N DESCRIPTION QUANTITY A10006-500 THREE PHASE INPUT FILTER A10010-000 HEATER POWER SUPPLY MODULE A10017-511 PWM BD FOR 500T2G8 A16485-000 HPA LOGIC AND CONTROL MODULE A21422-000 GRID MODULATOR MODULE A21425-296 DIODE CAP ASSY FOR TWT 5296 A21425-500 DIODE CAP ASSY FOR TWT MEC5196...

  • Page 57: Parts List, Power Supply For Twt 5196 /5296 , 1 A22826-501

    Parts List, Power Supply for TWT 5196 /5296 , 1 A22826-501 REF. DESIG. ETM P/N DESCRIPTION QUANTITY A10010-000 HEATER POWER SUPPLY MODULE A10017-511 PWM BD FOR 500T2G8 A16485-000 HPA LOGIC AND CONTROL MODULE A21422-000 GRID MODULATOR MODULE A21425-296 DIODE CAP ASSY FOR TWT 5296 A21461-500...

  • Page 58: Parts List, Emergency Bypass Board, A24830-001

    Model 500T2G8 5.3.4 Parts List, Emergency Bypass Board, A24830-001 REF. DESIG. ETM P/N DESCRIPTION QUANTITY B24830-000 EMERGENCY BYPASS BOARD C3-C5 C04105-000 CAP,0.1MF,100V,20%,MON,(KEMET C331C104M1R5CA) C30010-000 CAP,10MF,35V,TANT,RADIAL,(NEMCO TB10-35K1) C31028-000 CAP,1000PF,200VDC,10%,CER,1% FAILURE,(KEMET CKR05 SERIES W/"V" OPTION) C31032-000 CAP,0.01MF,200VDC,10%,CER,1% FAILURE,(KEMET CKR06 SERIES W/"V" OPTION)

  • Page 59: Parts List, Hpa Interface Board (Plastic) A25444-000

    Model 500T2G8 5.3.5 Parts List, HPA Interface Board (Plastic) A25444-000 REF. DESIG. ETM P/N DESCRIPTION QUANTITY B25444-000 HPA INTERFACE BOARD C161 C03105-000 CAP,0.01MF,100V,CER,10%,RADIAL,(AVX SR201C103KAA) C171 C04223-000 CAP,0.22MF,35V,TANT,RADIAL, [JAMCO 33507] C20, C32, C100 C05153-000 CAP,1.5MF,35V,TANT,RADIAL,(AVAX, TAP155K035SCS) C129, C163 C05223-000 CAP,2.2MF,35V,10%,SOLID SEALED...
  • Page 60 Model 500T2G8 REF. DESIG. ETM P/N DESCRIPTION QUANTITY J16214-000 TEST JACK,YELLOW,VERTICAL,(EF JOHNSON 105- 0857-001) J16215-000 TEST JACK,GREEN,VERTICAL,(EF JOHNSON 105- 0854-001) J16216-000 TEST JACK,BLUE,VERTICAL,(EF JOHNSON 105- 0860-001) J18167-000 D-SUB,37 PIN,FEMALE,PCB MOUNT,RIGHT ANGLE (AMP 745784-4) J18180-000 CONN,D-SUB,15 PIN,MALE,STRAIGHT,PCB MOUNT (POSITRONIC MD15M3000) J31013-000...
  • Page 61 Model 500T2G8 REF. DESIG. ETM P/N DESCRIPTION QUANTITY U17545-000 DRIVER,OIL,DS75451N,DUAL AND,[NATIONAL SEMICONDUCTOR DS75451N] U6, U19, U34, U39, U60 U20148-000 IC,HEX INVERTER,SCHMIDTT TRIGGER,(74HC14) (SSD) U20730-000 IC,DUAL J-K FLIP FLOP W/RESET,(7473) (SSD) U21328-000 IC,QUAD 2 INPUT NAND,SCHMIDTT TRIGGER,(74HC132) (SSD) U21388-000 IC,3 TO 8...

  • Page 62: Parts List, Microwave Power Assy For 500T Sc, A26857-003

    Model 500T2G8 5.3.6 Parts List, Microwave Power Assy for 500T SC, A26857-003 REF. DESIG. ETM P/N DESCRIPTION QUANTITY E00748-405 CABLE,RF,FLEXIBLE,4.5,SMA,(UNITED MICROWAVE AA-150-00.04.5) E00888-007 CABLE,RF FLEX, 7,SMA,MALE TO MALE,20 GHZ,50 OHM,BLUE FEP TEFLON (DICAR EZ402- 2121-07) E00888-009 CABLE,RF FLEX, 9,SMA,MALE TO MALE,20 GHZ,50 OHM,0.141 CABLE,INSULATED...

  • Page 63: Parts List, 500W Twt Amplifier, Sc-Band, Single, A26901-311

    A25444-000 HPA INTERFACE BOARD (PLASTIC FIBERS) A26856-001 FRONT PANEL ASSY, AR 500T SINGLE PHASE A26857-003 MICROWAVE POWER ASSY FOR 500T SC FOR AR UNITS WITH 7/16 CONNECTOR OUTPUT A26858-001 HPA CABINET AR 500T SC BAND SINGLE PHASE A26862-001 HPA WIRING KIT, AR 500T SC SINGLE PHASE...

  • Page 64: Parts List, 500W Twt Amplifier, Sc-Band, Three, A26901-313

    HPA INTERFACE BOARD (PLASTIC FIBERS) A26856-000 HPA SYSTEM CONTROL FRONT PANEL ASSY AR 500T A26857-003 MICROWAVE POWER ASSY FOR 500T SC FOR AR UNITS WITH 7/16 CONNECTOR OUTPUT A26858-000 HPA CABINET AR 500T SC BAND THREE PHASE A26862-000 HPA WIRING KIT, AR 500T SC...

  • Page 65: Sample Program For Ieee-488 Communication

    Model 500T2G8 SAMPLE PROGRAM FOR IEEE-488 COMMUNICATION 1000 ! *********************************************** 1010 IEEE-488 COMMUNICATIONS SOFTWARE 1030 7/24/92 AARON D. McCLURE 1040 ! *********************************************** 1041 DIM F$[80] 1042 DIM A$[80] 1050 CLEAR SCREEN 1060 INPUT "INPUT COMMAND TO SEND TO POWER SUPPLY.
  • Page 66 Model 500T2G8 Rev E...
  • Page 67 These modules are not field-repairable and should never be opened outside of AR’s Microelectronics Lab. The modules in these product lines have a security label on two sides of the modules between the housing and lid/cover. If the security label is removed and or cut, the warranty of the module will be voided.

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