AR 350A400, Руководство по эксплуатации и обслуживанию

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Model 350A400
ii
3. THEORY OF OPERATION ............................................................................. 25
3.1 Introduction .......................................................................................................... 25
3.2 RF Amplifier Operation ....................................................................................... 25
3.2.1 A1 Pre-Amplifier Assembly (Schematic No. 10045472, 10041352, 10045475) . 25
3.2.1.1 A1 Pre-Amplifier Assembly (Schematic 10045472) ..................................... 25
3.2.1.2 A2 Switch Assembly (Schematic 10041352) ................................................ 25
3.2.1.3 A3 Output Amplifier Assembly (Schematic 10045475) ................................ 25
3.2.2 A2 100W 400MHz Driver Module Assembly (Schematic 10039874) ................ 26
3.2.3 A3 Four-Way Splitter ........................................................................................... 26
3.2.4 A4–A7 100W 400MHz Module Assembly (Schematic 10039874) ..................... 26
3.2.4 A8 Four-Way Combiner ....................................................................................... 26
3.3 Power Supplies (PS1, PS2, Ps3) ........................................................................... 27
3.4 Control System ..................................................................................................... 27
3.4.1 A12 Control/Fault Board (Schematic #10042218)............................................... 27
3.4.2 A14 Interface Board (Schematic #10020073) ...................................................... 27
4. MAINTENANCE ............................................................................................... 29
4.1 General Maintenance Information ........................................................................ 29
4.2 Disassembly Procedure ........................................................................................ 29
4.3 Troubleshooting ................................................................................................... 30
4.3.1 General - Reading Faults ...................................................................................... 30
4.3.2 The Unit Cannot Be Operated Remotely .............................................................. 31
4.3.3 Thermal Fault (Schematic Diagram Nos. 10044770, 10039874) ......................... 31
4.3.4 Interlock Fault (Schematic Diagram No. 10044770) ........................................... 31
4.3.5 Amplifier Faults (Schematic Diagram Nos. 10044770, 10039874) ..................... 32
4.3.6 Low or No Power Output (DC Tests) (Schematic Diagram No. 10044770) ........ 32
4.3.7 Low or No Power Output (RF Test) (Schematic Diagram Nos. 10044770
and 10039874) ...................................................................................................... 33
FIGURES
2-1 Model 350A400 Front Panel .................................................................................. 7
2-2 Model 350A400 Rear Panel ................................................................................... 8
2-3 Menu Map .............................................................................................................. 9
4-1 Typical Response at -20dBm Input ...................................................................... 33
4-2 Typical Response at 0dBm Input ......................................................................... 33
4-3 Typical A Module Response ................................................................................ 34
4-4 Typical A1 Pre-Amplifier Response .................................................................... 34
TABLES
2-1 RS-232 Port Settings ............................................................................................ 11
2-2 RS-232 (DCE) Port Pinout Diagram DB-9 Female.............................................. 11
2-3 Fiber-Optic Serial Port Settings ........................................................................... 12
2-4 Relationship between 350A400 Controls and Remote Communication .............. 14
2-5 States .................................................................................................................... 17
2-6 Faults .................................................................................................................... 18