Datasheet

General Specifications
Display U1271A and U1272A: Liquid crystal display (LCD) (with maximum reading of 33,000 counts)
U1273A/U1273AX: Organic LED (OLED) display (with maximum reading of 33,000 counts)
Power consumption U1271A/U1272A: 460 mVA maximum (with backlight enabled)
U1273A/U1273AX: 180 mVA maximum (with maximum brightness)
Battery type 4 × 1.5 V Alkaline battery (ANSI/NEDA 24A or IEC LR03), or
4 × 1.5 V Zinc Chloride battery (ANSI/NEDA 24D or IEC R03)
4 × 1.5 V Lithium battery (ANSI/NEDA 24LF or IEC FR03)
Battery life U1271A and U1272A: 300 hours typical (based on new Alkaline batteries for DC voltage measurement)
U1273A/U1273A X:
Based on new Alkaline batteries for DC voltage measurement:
30/45/60 hours typical at High/Medium/Low brightness, respectively
Based on new Lithium batteries for DC voltage measurement:
50/100 hours typical at High/Low brightness, respectively
Low battery indicator will flash when the battery voltage drops:
For non-rechargeable batteries: 4.4 V (approximately)
For rechargeable batteries: 4.5 V (approximately)
Fuse 10 × 35 mm 440 mA/1000 V 30 kA fast-acting fuse
10 × 38 mm 11 A/1000 V 30 kA fast-acting fuse
Input impedance at off mode 1.67 kΩ (protected by positive temperature coefficient resistor)
(U1272A, U1273A and U1273AX only)
Operating environment Operating temperature:
U1271A/ U1272A/U1273A: –20 to 55 °C, 0% to 80% RH
U1273AX: –40 to 55 °C, 0% to 80% RH (using Lithium batteries)
Full accuracy up to 80% RH for temperatures up to 30 °C, decreasing linearly to
50% RH at 55 °C
Altitude up to 3000 meters
Pollution degree II
Storage compliance –40 to 70 °C, 0 to 80% RH
Safety compliance IEC 61010-1:2010 / EN 61010-1:2010, IEC 61010-2-033:2012 / EN 61010-2-033:2012
Canada: CAN/CSA-C22.2 No.61010-1-12, CAN/CSA-C22.2 No. 61010-2-033-12
USA: ANSI/UL Std. No. 61010-1 (3rd Edition), ANSI/UL Std. No. 61010-2-033 (1st Edition)
Measurement category CAT III 1000 V/CAT IV 600 V
Electromagnetic compatibility (EMC) Commercial limits compliance with EN61326-1
Influence of radiated immunity; in RF electomagnetic fields of 3 V/m
DC voltage measurement typical accuracy
All ranges ; ± 0.03% of range
DC current measurement typical accuracy
300 uA, 3000 uA, 30 mA, 300 mA & 3 A range; ± 0.22% of range
10 A range ; ± 0.66% of range
Note:
– The measurement accuracy is applied only when DC Low Pass Filter (LPF) is ON (factory default).
– The use of LPF is recommended to improve the accuracy of measurements in the presence of RF
fields.
– If used in close proximity to an RF transmitter or when subjected to continuously present electromag-
netic phenomena, some recoverable degradation of performance may occur.
Ingress protection rating IP-54
8 | Keysight | U1270 Series Handheld Digital Multimeters - Data Sheet