Keysight U3606A, User'S And Service Manual

Page: 143 / 293

System Related Operation 4
Utility Menu Summary
U3606A User’s and Service Guide 121
If the power- on or complete self- test fails, the Error annunciator
illuminates, and an error is stored in the error queue. See
“Reading error
messages” on page 114 and “Self- test” on page 154 for more information
on resolving the error.
Selecting a dBm reference resistance value
The dBm function is logarithmic, and is based on a calculation of power
delivered to a reference resistance, relative to 1 mW. The following
procedure shows you how to select an appropriate dBm reference
resistance value.
1 To access the utility menu, press Shift > Utility .
2 The first utility menu item (Error) will be shown in the upper
secondary display.
3 Press or until the menu item “db.rEF” is shown in the upper
secondary display. The factory default dBm reference resistance value is
600
Ω
.
4
Press or to change the dBm reference resistance value
(0001
Ω
to 9999
Ω
). See “Editing values” on page 110 for more
information.
5
After selecting an appropriate dBm reference resistance value, press
Shift
>
Save
to save or press
Shift
>
Exit
to exit the edit mode without
saving.
6
Press
Shift
>
Exit
to exit the utility menu.