44 Chapter 2
Test Descriptions
Frequency Accuracy
Step 12. Perform the frequency accuracy calculations either using a spreadsheet
such as Microsoft
Excel (see page 49), or manually (see page 50).
Step 13. Repeat steps 4 to 12 above for the remaining frequencies, spans and
bandwidths as listed in the data into the Test Record. Ensure the
measured values are within its published specification.
Step 14. Reset the IF Gain (press the
System key, then More, More, and Service.
Enter the service password
-, 2, 0,1 ,0 press Enter, Service and then press IF
Test
and Fixed IF Gain (Off).
NOTE The DSP bandwidths are verified at the narrowest bandwidth only. This
is due the fact that they use digital sample processing (DSP), therefore it
is only necessary to verify the narrowest bandwidth. The NFA N8972A
does not support DSP.
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