Keysight Technologies M937 A PXIe Series Service Manual page 64

Tests, Adjustments, and Troubleshooting
Performance Tests
7. The test set's output attenuator is changed in 5 dB steps from 0 to 60 dB,
and this measurement is repeated.
8. With the 1 dB of overlap in each measurement, the data for each attenuator
setting can be stitched together to provide a complete receiver linearity
profile from +3 dBm to –63 dBm.
9. This test is repeated for each receiver.
If the Analyzer Fails this Test
- If the analyzer still fails this test, repeat the test.
- If the analyzer fails this test, return it to Keysight for repair. Refer to
"Shipping Your Network Analyzer for Service or Repair" on page
2-44 Keysight M937xA PXIe Service Guide
1-3.