Troubleshooting The Rf Path; Alc And Rf Problems - Agilent Technologies PSG Series Service Manual

Troubleshooting

Troubleshooting the RF Path

Troubleshooting the RF Path
Troubleshooting RF Path procedure:
• preset the signal generator
• set a frequency
• open ALC loop (ALC Off)
• set signal generator to maximum power
• check power levels in the RF path (power levels are included on the RF block diagram)

ALC and RF problems

1. Run a full self-test and troubleshoot any reported failures before proceeding.
2. From Table1-36 determine the frequencies where the problem occurs.
Table 1-36
All frequencies
250 kHz to 2 GHz
250 kHz to 20 GHz
3.2 GHz to 20 GHz/40 GHz
20 GHz to 40 GHz
3. Perform the following steps:
•press Preset
1-58
Frequencies
A27 40 GHz Doubler (40 GHz models only)
A28 YIG Oscillator
A29 20 GHz Doubler
A30 Modulation Filter
AT1 (Option 1E1)
RF Output Connector
A6 Frac-N
A8 Output
A27 40 GHz Doubler
A29 20 GHz Doubler
A30 Modulation Filter
A25 Highband Coupler/Detector
AT1 (Option 1E1)
RF Output Connector
A23 Low Band Coupler/Detector
A8 Output
A27 40 GHz Doubler (40 GHz models only)
A29 20 GHz Doubler
A30 Modulation Filter
AT1 (Option 1E1)
RF Output Connector
A25 Highband Coupler/Detector
A27 40 GHz Doubler
A30 Modulation Filter
AT1 (Option 1E1)
RF Output Connector
Assemblies