1 Getting Started
22 Keysight U1251B and U1252B User’s and Service Guide
Introducing the U1251B/U1252B Handheld Digital Multimeter
Key features of this digital multimeter:
– DC, AC and AC + DC (U1252B only) voltage and current measurements
– True-RMS measurement for both AC voltage and current
– Rechargeable Ni-MH battery with built-in charging capability (U1252B only)
– Ambient temperature on second display
– Battery capacity indicator
– Bright orange LED backlight
– Resistance measurement of up to 50 M (for U1251B) and 500 M
(for U1252B)
– Conductance measurement from 0.01 nS (100 G) 50 nS
– Capacitance measurement of up to 100 mF
– Frequency counter of up to 20 MHz (U1252B only)
– The % scale readout for 4–20 mA or 0–20 mA measurement
– dBm with selectable reference impedance
– 1 ms Peak Hold to catch inrush voltage and current easily
– Temperature test with selectable 0 C compensation (without ambient
temperature compensation)
– K-type (for U1251B) and J/K-types temperature measurement (U1252B only)
– Frequency, duty cycle, and pulse width measurements
– Dynamic Recording for min, max, and average readings
– Data Hold with manual or auto trigger and Null mode
– Diode and audible continuity tests
– Square wave generator with selectable frequency, pulse width and duty cycle
(U1252B only)
– Keysight GUI Application Software (IR-USB cable sold separately)
– Closed case calibration
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