Datasheet

Specification Assumptions
– Accuracy is given as ± (% of reading + counts of least significant digit) at 23 °C ± 5 °C, with relative humidity less than
80% RH.
– AC V and AC μA/mA/A specifications are AC coupled, true RMS and are valid from 5% of range to 100% of range.
– The crest factor may be up to 3.0 at full scale except for the 1000 V range where it is 1.5 at full scale.
– For non-sinusoidal waveforms, add (2% reading + 2% full scale) typical, for crest factors up to 3.
– After Z
LOW
voltage measurements, wait at least 20 minutes for thermal impact to cool before proceeding with any
other measurement.
General Specifications (continued)
Temperature coefficient U1271A/U1272A/U1273A: 0.05 × (specified accuracy)/°C (from –20 to 18 °C, or 28 to 55 °C)
U1273AX: 0.05 x (specified accuracy/ °C (from –40 to 18 °C, or 28 to 55 °C)
Common Mode Rejection Ratio (CMRR) > 120 dB at DC, 50/60 Hz ± 0.1% (1 kΩ unbalanced)
Normal Mode Rejection Ration (NMRR) > 60 dB at 50/60 Hz ± 0.1%
Dimensions (W x H x D) 92 × 207 × 59 mm
Weight U1271A: 518 grams (with batteries)
U1272A: 520 grams (with batteries)
U1273A: 500 grams (with batteries)
U1273AX: 500 grams (with batteries)
Calibration cycle One year
9 | Keysight | U1270 Series Handheld Digital Multimeters - Data Sheet