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.
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