Information

08 | Keysight | U1280 Series Handheld Digital Multimeters – Data Sheet
General specifications
Display 5-digit liquid crystal display (LCD) with maximum reading of 66,000-count
Automatic polarity indication.
Power consumption 250 mVA / 330 mVA with backlight
Battery type 4x 1.5 V AA alkaline battery (ANSI/NEDA 15A or IEC LR6), or;
4x 1.5 V AA zinc chloride battery (ANSI/NEDA 15D or IEC R6), or; 4x 1.5 V AA Lithium battery
(ANSI/NEDA 15-LF or IEC FR6)
Battery life 800 hours typical based on new alkaline batteries for DC voltage measurement
Connectivity Infrared (IR) port, connect with:
– IR-USB cable, or;
– U1117A IR-to-Bluetooth adapter (Bluetooth Class 1), or;
– U1177A IR-to-Bluetooth adapter (Bluetooth Class 2)
Fuse 10 x 35 mm, 440 mA / 1000 V, 10 kA minimum fast-acting fuse
10 x 38 mm, 11 A / 1000 V, 20 kA minimum fast-acting fuse
Operating environment Full accuracy from –20 °C to 55 °C; and up to 80 % R.H. for temperature up to 30 °C decreasing
linearly to 50 % R.H. at 55 °C
Pollution Degree II
Altitude up to 3000 meters
Storage compliance –40 °C to 70 °C, 0 to 80 % R. H. (with battery removed)
Safety compliance EN/IEC 61010-2-030: 2010
EN/IEC 61010-1: 2010
Measurement category CAT III 1000 V / CAT IV 600 V
Electromagnetic compatibility (EMC) Susceptibility and Emissions: commercial limits per EN/IEC 61326-1
Ingression protection rating IP-67, protected against dust and the effect of immersion between 15 cm and 1 m
Temperature coefficient 0.05 x (specified accuracy) / °C (from –20 °C to 18 °C or 28 °C to 55 °C)
Common mode rejection ratio (CMRR) > 120 dB at DC, 50/60 Hz ± 0.1 % (1 kΩ unbalanced)
Normal mode rejection ratio (NMRR) > 60 dB at 50/60 Hz ± 0.1 %
Dimensions (H x W x D) 218 x 96 x 59 mm
Weight 701 grams (with batteries)
Warranty Three years for main unit
Three months for standard shipped accessories
Calibration cycle One year, or;
Two years (with 1.5 times of one year specification)
Specification assumptions
– Accuracy is given as ± (% of reading + counts of least significant digit) at 23 °C ± 5 °C,
with relative humidity less than 80 % R.H.
– Accuracy is specified for 1-year after calibration, at operating temperature of room
temperature. Multiply 1.5 times of the accuracy for 2-year after calibration.
Example ± (1.5 X % of reading + 1.5 X counts of least significant digit).
– AC and AC µA / mA / A specifications are AC coupled.
– True RMS measurement is valid from 5 % of range to 100 % of range.
– For non-sinusoidal waveforms, add (0.1 % of reading + 0.3 % of full scale) typically
– The maximum circuit limitation of peak signal is 300 % typically for voltage and current
except 250 % and 150 % typically for range 600 V and 1000 V respectively.
– The crest factor is according to the maximum circuit limitation of peak signal
– Specification is based on 5 times/second of data refresh rate
– CMRR and NMRR are based on 5 times/second of data refresh rate