Getting Started 1
Keysight U1241B and U1242B User’s and Service Guide 27
Table 1-4 Keypad descriptions and functions
Function First level functions Range
Second level functions (press )
Range
OFF Turn off the multimeter
DCV measurement 0.1 mV to 1000 V
ACV measurement 50 mV to 1000 V
Harmonic ratio (for U1242B only) 0.0% to 99.9%
Diode measurement
Switch counter measurement
Resistance measurement 0.1 Ω to 100 MΩ Audible continuity measurement
Capacitance measurement 0.1 nF to 10 mF
DCµA 0.1 μA to 10 mA ACµA measurement 50 μA to 10 mA
DCmA 0.01 mA to 440 mA
ACmA measurement 5 mA to 440 mA
mA% scale
DCA 0.001 A to 10 A ACA measurement 0.5 A to 10 A
T1 T1 temperature –40 °C to 1000 °C
T2 and T1–T2 temperature
measurements (for U1242B)
–40 °C to 1000 °C
Table 1-5 Features that can be accessed through front panel keypad
Actions Steps
Turns ON backlight
Press
Checks battery capacity
Press and hold for > 1 second
Freezes the measured value
Press
Starts MIN/MAX/AVG recording
Press and hold for > 1 second
Offsets the measured value
Press
Scans the measured temperature (for U1242B only)
Press and hold for > 1 second
Changes the measuring range
Press
Turns on auto range
Press and hold for > 1 second
Measures frequency for AC signal
Press
Starts manual data logging
Press and hold for > 1 second
Please use manual ranging to measure AC signal with a DC offset.