Table
Connector Manual Probe Troubleshooting Test Measured Signal Lines
| A14J303 XFER Amp Bias |
| MS3 | ||
| Main Amp Bias |
|
| MS4 | |
| Out Amp Bias |
|
| MS1 | |
| Main Osc Bias |
|
| MS2 | |
| Main Pretune DAC |
| MS7 | ||
| Course Adj DAC |
| MS8 | ||
| Fine Adj DAC |
|
| MS6 | |
| Span Multiplier DAC |
| MS5 | ||
| A15J200 Positive 15 Volt Supply |
| MS1 | ||
| Sampler | Drive Buffer Bias | MS2 | ||
| Sampling Oscillator Bias | MS3 | |||
| Offset Lock Drive Buffer | MS4 | |||
| OFL Error Voltage |
| MS6 | ||
| Phase Detector Bias Adjust | MS8 | |||
| A15J400 Positive 15 Volt Supply |
| MS2 | ||
| Offset Lock RF | Buffer |
| - MS4 | |
| IF AMP/Limiter | Bias |
| MS6 | |
| Offset Lock Loop Buffer D | MS7 | |||
| Offset Lock Loop Buffer C | MS8 | |||
| Sampler | Bias Test |
| MS3 | |
| A15J502 Positive 15 Volt Supply |
| MS2 | ||
| Third LO Tune Voltage |
| MS3 | ||
| Offset Lock Loop Buffer | MS4 | |||
| 600 MHz Oscillator Bias | MS5 | |||
| Calibrator AGC Amp Bias | MS6 | |||
| Calibrator Amp1 | Adj |
| MS7 | |
| 3rd LO Driver Amp |
| MSl, MS8 | ||
| A15J602 Positive 15 Volt Supply |
| MS8 | ||
| Flatness | Compensation | 3 | MS2 | |
| Flatness | Compensation | 2 | MS5 | |
| Flatness | Compensation | 1 | MS6 | |
| SIG ID Collector Bias |
| MS7 | ||
| RF Gain Control Test |
| MSl, MS3 | ||
| A15J901 R e v i s i o n |
|
|
| MS4, MS3 |
| External | Mixer Switch |
| MSl, MS8 | |
| Signal ID Switch |
|
| MS5, MS6 | |
| Ten Volt | Reference |
| MS4 | |
| External | Mixer Bias |
| MS7 | |
| RF Gain Test |
|
| MS2 | |