Rf Switching Failures; Rf Switching Path Test; Equipment Required - Keysight Technologies U3022AE10 User's And Service Manual

U3022AE10
Troubleshooting the Test Set

RF Switching Failures

If the test set's RF signal functionality is not operating properly, use the following
procedure to aid in isolating the source of problem. The internal RF mechanical
switches used in this instrument are biased with the +21 Vdc supply voltage from the
Switch Interface board.
1. Follow the
2. Place the network analyzer and test set side by side (not stacked) and connect
3. Ensure that the network analyzer is NOT in Multiport Mode.
4. Using the test set I/O Data command values, confirm the correct address and

RF Switching Path Test

If you suspect an RF signal path problem with the test set and have verified that the
problem in not the front panel RF interface cables, the following procedure will check
all of the RF signal paths through the test set.
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Equipment Required

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80
"Non-RF Failures" on page
the I/O cable (N4011-21002). See
data values are used, refer to
Install the Test Set I/O cable from the analyzer to the test set's rear panel.
Remove the front panel RF interface cables and reinstall the analyzer's front panel
semi-rigid "U" shaped jumper cables.
PNA, PNA-L or PNA-X Network Analyzer
Two RF Flex Cables (3.5 mm male/female)
3.5 mm Adapters (female to female)
Test Set I/O Cable
77, if you have not done so.
Figure 20 on page 31.
"Address and Data Values" on page
Keysight U3022AE10 User's and Service Guide
52.