Troubleshooting Performance Test Problems - Agilent Technologies PSG Series Service Manual

Troubleshooting

Troubleshooting Performance Test Problems

Troubleshooting Performance Test Problems
When a performance test fails and all self-tests have passed, use the following table to locate the most likely
failure.
Table 1-35 Troubleshooting Performance Test Problems
Performance test that is failing...
Maximum Leveled Output Power
Power Level Accuracy
Internal Pulse Modulation Level Accuracy
Internal Pulse Modulation Rise/Fall Time
Internal Pulse Modulation Minimum Pulse Width
DC FM Carrier Offset
External AM Frequency Response
Internal FM Frequency Response
External Phase Modulation Frequency Response
Internal FM Distortion
Internal Phase Modulation Distortion
External FM Deviation Accuracy
1-56
Action to perform...
Refer to "Troubleshooting the RF Path" on page
Perform
Power Flatness Calibration,
Attenuator Calibration-Low Band and High Band Power,
Attenuator Calibration-High Band and High Power,
Attenuator Calibration-Low Band and Low Power, and
Attenuator Calibration-High Band and Low Power.
If the frequency ≤3.2 GHz, check the
A11 Pulse/Analog Modulation Generator or the A8 Output.
If the frequency is >3.2 GHz, check
A11 Pulse/Analog Modulation Generator and the A10 ALC.
If the Internal Pulse Modulation Minimum Pulse Width test
fails a Pulse Width Calibration should be performed prior to
replacing any assembly.
Perform DC FM Calibration.
If still failing, check
A11 Pulse/Analog Modulation Generator and A6 Frac-N.
If the frequency is ≤3.2 GHz, check the
A11 Pulse/Analog Modulation Generator or the A8 Output.
If the frequency is >3.2 GHz, check the
A11 Pulse/Analog Modulation Generator and the A10 ALC.
Perform FM adjustments.
If still failing check
A11 Pulse/Analog Modulation Generator and A6 Frac-N.
Perform FM adjustments.
If still failing check
A11 Pulse/Analog Modulation Generator and A6 Frac-N.
Perform FM adjustments.
If still failing check
A11 Pulse/Analog Modulation Generator and A6 Frac-N.
Perform FM adjustments.
If still failing check
A11 Pulse/Analog Modulation Generator and A6 Frac-N.
Perform FM adjustments.
If still failing check
A11 Pulse/Analog Modulation Generator and A6 Frac-N.
1-58.