Keysight Technologies M937 A PXIe Series Service Manual page 61

Tests, Adjustments, and Troubleshooting
Performance Tests
4. Connect the 83059A (-m- to -m-) adapter to the 3.5 mm (-m- to -f-) test
cable.
5. Connect a 10 dB attenuator to the other end of the test cable.
6. Connect the adapter end of the test cable to the M937xA Port 1.
7. The PNAasPowerMeter is connected to the 10 dB attenuator at the end of
the test cable.
8. For hundreds of frequencies across the full range of the analyzer, the source
power, P
level.
9. The PNAasPowerMeter is disconnected, and the test cable end with the 10
dB pad is connected to the port to be tested.
10.A CW linear measurement sweep is measured for each test point. The
receiver reference power level, P
the mean of each sweep.
11.The test cable is removed and loads are connected to both ports.
12.A CW linear measurement sweep is measured for each test point. The
receiver test power level, P
mean of each sweep.
13.The corrected noise floor is calculated in dBm for a 10 Hz IF bandwidth
using P
conversion factor between the 1 kHz IFBW measurement and 10 Hz IFBW
specification.)
If the Analyzer Fails this 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
Keysight M937xA PXIe Service Guide
, is measured at the end of the cable at the Preset power
source
test
= P – 19.96 dB – (P
NoiseFloor test
, is calculated in dBm for each point from
ref
, is calculated in dBm for each point from the
– P ). (19.96 dB is the
source ref
1-3.
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