1 Getting Started
26 Keysight U3401A User’s and Service Guide
DC Direct current
AC Alternating current
DCAC AC + DC
Polarity, digits, and decimal points for primary display
°C Celcius temperature unit. Not applicable for the U3401A.
°F Fahrenheit temperature unit. Not applicable for the U3401A.
mV Voltage unit: mV, V
μmA Current unit: μA, mA, A
μmnF Capacitance unit: μF, nF, mF
MkΩ Resistance unit: Ω, kΩ, MΩ
MkHz Frequency unit: Hz, kHz, MHz
Secondary display
Polarity, digits, and decimal points for secondary display
μmnF Capacitance unit: μF, nF, mF
°C Celcius temperature unit. Not applicable for the U3401A.
°F Fahrenheit temperature unit. Not applicable for the U3401A.
% Duty cycle measurement
mV Voltage unit: mV, V
μmA Current unit: μA, mA, A
S Shift mode
MkΩ Resistance unit: Ω, kΩ, MΩ
2ND Secondary display is enabled. Not applicable for the U3401A.
AUTO Autoranging
DC Direct current
AC Alternating current
Table 1-1 Display annunciators (continued)
Annunciator Description