Keysight Technologies N9040B UXA Signal Analyzer Service Guide 269
Service and Diagnostics Menus
Service Key Descriptions
Service Key Descriptions
Timebase
Allows the technician to adjust the 10 MHz reference (“timebase”) manually.
Timebase DAC
Allows the technician the ability to adjust the 10 MHz reference (“timebase”).
The adjustment is performed by changing the DAC setting controlling the
reference. Once the reference is adjusted to the proper frequency, the DAC
value can be saved in non-volatile memory by pressing the Save menu key.