In Case of
Difljiculty
1. If any measured frequency is close to the specification limits, check the time
base accuracy of the counter used.
2. If the analyzer fails by a significant margin at
all
frequencies (especially if
the deviation increases with frequency), the master time base probably needs
adjustment. In this case, refer to the “Frequency Accuracy Adjustment”
procedure, located in Chapter 3, “Adjustments and Correction Constants.
’
The “Fractional-N Frequency Range Adjustment” also affects frequency
accuracy.
3. Refer to Chapter 7, “Source Troubleshooting,” for related troubleshooting
information.
2-20
System
Veriication
and
Performance
Tests
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