160 Keysight Technologies N9040B UXA Signal Analyzer Service Guide
RF Section Troubleshooting (RF/Microwave Analyzers)
Troubleshooting
In order to gain access to the front end components, remove the side chassis
(1) by removing the eleven screws (2) (0515-0372) and the two screws (3)
(0515-1946). See Figure 4-9.
Figure 4-9 Remove the Side Chassis
High Band #2 signal path utilizes a high band mixer internal to the A13 Front End Assembly for
input frequencies from 13.6 GHz to 26.5 GHz. Failures from 13.6 GHz − 26.5 GHz will most likely
be caused by the A13 RF Front End Assembly. If the failure is amplitude related, proper
adjustments such as frequency response and the YTF Preselector adjust should be performed
first before changing the A13 RF Front End Assembly.
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