AR 10012510, Operating And Service Manual

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TABLE OF CONTENTS
TABLE OF CONTENTS .................................................................................................. i
1. DESCRIPTION AND SPECIFICATIONS ....................................................... 1
1.1 TWTA Description ................................................................................................ 1
1.2 Suggested Applications .......................................................................................... 1
1.3 Specifications ......................................................................................................... 1
1.4 Accessories ............................................................................................................ 1
1.5 Test Data Sheet ...................................................................................................... 2
2. THEORY OF OPERATION .............................................................................. 5
2.1 Design of the Amplifier ......................................................................................... 5
2.2 Description of the RF Circuit ................................................................................. 5
2.3 Description of the Power Supply ........................................................................... 6
3. OPERATION ....................................................................................................... 7
3.1 Warnings and Cautions .......................................................................................... 7
3.2 Installation ............................................................................................................. 7
3.2.1 Unpacking .............................................................................................................. 7
3.2.2 Mounting ................................................................................................................ 8
3.2.3 Cooling Requirements ........................................................................................... 9
3.2.4 AC Line Power Connections ................................................................................. 9
3.2.5 RF Connections ................................................................................................... 10
3.2.6 External interlock connector ................................................................................ 10
3.3 Front Panel Features ............................................................................................ 11
3.4 Front Panel Display and Soft Keys ...................................................................... 12
3.4 Rear Panel Features ............................................................................................. 16
3.6 Initial Turn On and Warm-up Procedure ............................................................. 17
3.7 Emergency Bypass Operation .............................................................................. 17
3.8 Remote IEEE-488 Operation ............................................................................... 18
3.9 Pulsed Operation .................................................................................................. 23
3.10 TWTA General Considerations ........................................................................... 24
4. MAINTENANCE ............................................................................................... 27
4.1 Safety Warning .................................................................................................... 27
4.2 Unauthorized Repairs .......................................................................................... 27
4.3 Preventive Maintenance ....................................................................................... 27
4.4 Troubleshooting ................................................................................................... 28
4.5 Non-Repairable Modules ..................................................................................... 29
5. TECHNICAL DOCUMENTATION ............................................................... 31
5.1 Top Level Build Tree ........................................................................................... 32
5.1.1 Standard Model .................................................................................................... 32
5.1.2 250 Watt IJ-Band TWTA AR with Sample and Input Connectors on Front
Panel .................................................................................................................... 33
5.2 Schematics ........................................................................................................... 35
5.3 Wiring Diagrams.................................................................................................. 37
5.4 Parts Lists ............................................................................................................. 39
5.4.1 Parts List, HPA Logic and Control Module, A16485-000 .................................. 40
5.4.2 Parts List, IJ Band Power Supply (Pulsed) for TWT, A22520-062 ................... 42