2 Operations and Features
58 Keysight U3401A User’s and Service Guide
Table 2-2 Description for dual display combination
Primary display
Secondary display
Defaul t
secondary
display
Press secondary
display once
Press secondary
display twice
Press
secondary display
three times
DCV Frequency
ACV
[b]
dBm —
ACV Frequency
DCV
[b]
dBm —
ACV + DCV Frequency
ACV
[b]
DCV
[b]
dBm
dBm ACV DVC ACV+DCV —
DCI Frequency
ACI
[b]
——
ACI Frequency
DCI
[b]
——
ACI + DCI Frequency
ACI
[b]
DCI
[b]
—
Frequency
[a]
ACV ACI — —
COMP (Measuring Value) HI, LO, PASS — — —
Percentage (Measuring Value) %— — —
Notes:
[a] The Frequency reading is corresponding to the current or voltage input signal respectively. The Frequency measurement is always working
on autoranging mode. The Buttons of AUTO, UP and DOWN are used to select the range of measuring signal. If the current measurement is
set before selecting Hz function, the default will show ACI first, else show ACV.
[b] In autoranging mode, the ranges setting of both the primary and secondary display are corresponding to the higher range of two displays.
Whereas in manual range, the ranges of secondary display are the same as the primary display.