Technical data

2 Operations and Features
42 U3401A User’s and Service Guide
Table 2 - 2 Description for dual display combination
Primary Display
Secondary Display
Default
secondary
display
Press secondary
display once
Press secondary
display twice
Press
secondary display
three times
DCV
Frequency ACV
[2]
dBm —
ACV
Frequency DCV
[2]
dBm —
ACV + DCV
Frequency ACV
[2]
DCV
[2]
dBm
dBm
ACV DVC ACV+DCV —
DCI
Frequency ACI
[2]
——
ACI
Frequency DCI
[2]
——
ACI + DCI
Frequency ACI
[2]
DCI
[2]
—
Frequency
[1]
ACV ACI — —
COMP (Measuring Value)
HI, LO, PASS — — —
Percentage (Measuring Value)
%— — —
Notes:
1 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.
2 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.