Installation guide

Troubleshooting
Troubleshooting Performance Test Problems
1-94
AM Frequency Response •Perform:
— Internal AM Accuracy (This is part of the Internal AM
Accuracy and Distortion performance test.)
• If still failing and:
— problem is at carrier frequencies ≤ 4GHz,
troubleshoot the following assemblies:
— A13 Output
— problem is only at carrier frequencies > 4GHz,
troubleshoot the following assemblies:
— A14 Extended Frequency Output (Option 506)
FM Frequency Response • Perform:
— Internal FM Accuracy (This is part of the Internal FM
Accuracy and Distortion performance test.)
• If still failing, troubleshoot the following assemblies:
— A17 Synthesizer (Option 501, 502, 503, 504)
or A16 Frac-N (Option UNJ or Option 506)
Phase Modulation Frequency Response • Perform:
— Internal PM Accuracy (This is part of the Phase
Modulation Accuracy and Distortion performance
test.)
• If still failing, troubleshoot the following assemblies:
— A17 Synthesizer (Option 501, 502, 503, 504)
or A16 Frac-N (Option UNJ or Option 506)
DCFM Frequency Offset Relative to CW • Perform:
— DCFM Calibration
• If still failing, troubleshoot the following assemblies:
— A18 Reference
— A23 Motherboard
Table 1-40 Troubleshooting Performance Test Problems
Performance test that is failing... Action to perform...