Keysight N9038A, Service Manual, Page: 442 / 745

Keysight N9038A MXE Service Guide 461
Service and Diagnostics Menus
Service Key Descriptions
Timebase
This menu allows access to manually adjust the 10 MHz reference (timebase).
Timebase DAC
This allows the technician 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. If the Timebase
DAC value has been changed, but no Save operation performed before exiting
this menu, a warning is provided to you that they have not saved their setting,
as shown in Figure 16-13 .
Figure 16-13 Timebase DAC Changes Warning
Save
Save permanently saves the current Timebase DAC setting to non-volatile
memory. When this key is pressed a confirmation prompt, as shown in Figure
16-14 , must be accepted in order for the new DAC value to be saved.
Figure 16-14 Timebase DAC Save Confirmation