276 Keysight Technologies N9040B UXA Signal Analyzer Service Guide
Service and Diagnostics Menus
Service Key Descriptions
An example spectrum demonstrating the difference between LO Feed
through nulling turned on/off is shown below. The yellow trace is with feed
through nulling turned on, and the blue trace is with feed through nulling
turned off.
Intermod Nulling
Control is available to set the state of Intermod Nulling On or OFF. In the
ON state, the software will determine when it is appropriate to null the
intermodulation products. IM nulling is only available in low band.
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