Keysight Technologies N5224A Service Manual page 66

Tests and Adjustments
Performance Tests
7. 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.
8. This test is repeated for each receiver.
If the Analyzer Fails this Test:
— If the analyzer fails this test, rerun the test.
— If the analyzer fails this test repeatedly, replace the A23 mixer brick for a
Port 1 or Port 2 failure or the A24 mixer brick for a Port 3 or Port 4 failure,
then repeat this test. Refer to
Mixer Bricks" on page
— If the analyzer still fails this test, replace the A12 SPAM board and repeat
this test. Refer to
page
3-40
7-36.
"Removing and Replacing the A4–A17 Boards" on
7-14.
"Removing and Replacing the A27 and A28
Keysight N5224A/25A Service Guide