Datasheet
General Specications
Display Both primary and secondary displays are 5-digit on the liquid crystal display (LCD) with a maximum
resolution of 50,000 counts and automatic polarity indication. Backlight available.
Power supply – 9.6 V Ni-MH rechargeable batteries: 1.2 V x 8 pieces. No cadmium, lead or mercury.
– External switching adapter: AC 100 V to 240 V, 50/60 Hz input and DC 24 V/2.5 A output.
Power consumption – Battery charging: 9.3 VA typical
– Sourcing of constant current at 25 mA, maximum load: 5.5 VA typical on 24 V DC adapter, 2.4 VA
typical on 9.6 V batteries
– Meter only: 1.8 VA typical on 24 V DC adapter, 0.6 VA typical on 9.6 V batteries
Battery life Assuming fully-charged Ni-MH batteries:
Meter only: 20 hours (approximately)
Source/Meter: 4 hours (approximately)
will appear when voltage drops below 9 V (approximately)
Charging time Three hours (approximately) in 10 °C to 30 °C environment
NOTE: Prolonged charging is required if battery is fully discharged
Measurement rate Three readings/second, except for:
– AC+DC: 1 reading/second
– Frequency and duty cycle (> 1 Hz): 1 reading/second
– Pulse width (> 1 Hz): 0.25 to 1 reading/second
Common Mode Rejection Ratio (CMRR) > 90 dB at DC, 50/60 Hz ± 0.1% (1 kΩ unbalanced)
Normal Mode Rejection Ratio (NMRR) > 60 dB at DC, 50/60 Hz ± 0.1%
Operating environment 0 °C to 40 °C; up to 80% relative humidity (R.H.) for temperatures up to 31 °C, decreasing linearly to
50% R.H. at 40 °C
Storage environment –20 °C to 60 °C with batteries removed; 5% to 80% R.H. non-condensing
Altitude 0 to 2000 m
Safety compliance IEC 61010-1:2001/EN61010-1:2001 (2nd Edition), CAN/CSA-C22.2 No. 61010-1-04,
ANSI/UL 61010-1:2004, CAT II 150 V Overvoltage Protection, Pollution Degree 2
EMC compliance IEC61326-2-1:2005/EN61326-2-1:2006, ICES-001:2004, AS/NZS CISPR11:2004
Temperature coefcient – Input: 0.15 x (specied accuracy)/°C (from 0 °C to 18 °C or 28 °C to 40 °C)
– Output: ± (50 ppm output + 0.5 digit)/°C
Dimensions (H x W x D) 192 mm x 90 mm x 54 mm
Weight 0.98 kg with holster and batteries
Calibration One-year calibration cycle recommended
08 | Keysight | U1401B Handheld Multi-function Calibrator/Meter - Data Sheet