AR 0053007, Operating And Service Manual

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Model 2500A225C
iii
3.2.3 A3-A4 Four-Way Splitter ..................................................................................... 43
3.2.4 A5-A12 Final Module Assembly ......................................................................... 43
3.2.5 A13 Eight-Way Combiner .................................................................................... 44
3.2.6 A24 Bi-Directional Coupler ................................................................................. 44
3.2.7 A23 Detector ........................................................................................................ 44
3.3 Power Supplies ..................................................................................................... 44
3.4 Control System ..................................................................................................... 45
3.4.1 A14 Control/Fault Board ...................................................................................... 45
3.4.2 A15 Interface Board ............................................................................................. 45
3.4.3 A16 ALC .............................................................................................................. 45
3.5 Sample Ports ......................................................................................................... 45
4. MAINTENANCE ............................................................................................... 47
4.1 General Maintenance Information ........................................................................ 47
4.2 Disassembly Procedure ........................................................................................ 47
4.3 Cooling System .................................................................................................... 48
4.4 Troubleshooting ................................................................................................... 48
4.4.1 General - Reading Faults ...................................................................................... 49
4.4.2 The Unit Cannot Be Operated Remotely.............................................................. 49
4.4.3 Thermal Fault (Schematic 10052651 for LV, 10053509 for HV) ........................ 49
4.4.4 Interlock Fault ...................................................................................................... 50
4.4.4.1 Interlock Fault ................................................................................................ 50
4.3.4.2 AC Interlock Fault ......................................................................................... 50
4.4.5 Power Supply Faults (Schematic 10052651 for LV, 10053509 for HV) ............. 51
4.4.5.1 PS1 and PS2 Fault.......................................................................................... 51
4.4.5.2 PS3 through PS6 Fault ................................................................................... 51
4.4.6 Amplifier Faults (Schematic 10052651 for LV, 10053509 for HV) .................... 51
4.4.7 ALC Fault ............................................................................................................. 51
4.4.8 Low or No Power Output (DC Tests) (Schematic 10052651 for LV, 10053509 for HV)
.............................................................................................................................. 52
4.4.9 Low or No Power Output (RF Test) ..................................................................... 53
4.5 Locating and Replacing Modules ......................................................................... 55
Appendix A. Installing Software Upgrades ................................................................ 59
FIGURES
1-1 2500A225C AC Line Cord Installation .................................................................. 2
2-1 Model 2500A225C Front Panel ............................................................................. 6
2-2 Model 2500A225C Rear Panel ............................................................................... 7
2-3 Rear Panel 7-16 DIN Connector ............................................................................ 9
2-4 Align Connectors for Interface ............................................................................. 11
2-5 Placement of Wrenches on Connector ................................................................. 12
4-1 Typical Response at 0dBm Input ......................................................................... 53
4-2 Typical Response at -20dBm Input ...................................................................... 53
4-3 Typical A1 Pre-Amplifier Response -20 dBm Input ............................................ 54
4-4 Typical A1 Pre-Amplifier Response 0 dBm Input ............................................... 54
4-5 2500A225C Right Side, Modules A9-A12 .......................................................... 55
4-6 Connectors ............................................................................................................ 55
4-7 SMA Module Input .............................................................................................. 56
4-8 Final Module RF Output ...................................................................................... 56
4-9 RF Module ............................................................................................................ 57