Keysight Technologies U3042AE12, User'S And Service Manual

Page: 85 / 96

4. Connect the RF Flex cables to the RCVR OUT and CPLR ARM port indicated in
Table 2 5 . T he expected results should be similar to Figure 6 6 on page 8 4 .
RF Performance Fails
If the U3042AE12 operates correctly, but RF performance fails the operational test.
The following procedures can be used to isolate the failed component. Suspect the
coax switches, RF cables, or coupler.
The RF performance of the U3042AE12 depends on the performance of the analyzer.
Ensure the analyzer is meeting specification before continuing.
1. Verify that the test set and PNA SOURCE, RCVR, CPLR THRU, and CPLR ARM
connectors are clean and that the center pins are not damaged.
2. Verify the interface and internal RF cables are cleaned and not damaged. Refer to
“Verifying Cal Kit Operational Check Failure” on page 6 8
.
3. Review the “Cal Kit Operational Check Procedure” on page 6 2 and verify the
results for the port that is failing.
4. Reflection tracking trace shows a power hole, or is below the test limit line,
perform the switch path test for the port that is failing.
Table 2 5 Receiver Bypass Signal Path Connections and Commands
Path # Test Port Group RF Path Description
Control Mode
<Address>.<Data>
Path Components
1 Port 5, 9, 13 RCVR OUT to CPLR ARM 0.16 S101
2 Port 6, 10, 14 RCVR OUT to CPLR ARM 16.16 S201
3 Port 7, 11, 15 RCVR OUT to CPLR ARM 32.16 S301
4 Port 8, 12, 16 RCVR OUT to CPLR ARM 64.16 S401
U3042AE12 User's and Service Guide 85