The Keysight U2741A is a 5.5-digit USB modular digital multimeter delivering precision measurement across voltage, current, resistance, and specialized functions. Operating at up to 100 readings per second via high-speed USB 2.0 (USBTMC-USB488 compliant), it combines standalone portability with integration capability into the U2781A chassis for scalable test systems. Its compact, notebook-sized form factor—117 mm × 180 mm × 41 mm with bumpers and 509 g mass—suits field deployment and space-constrained lab environments.
Technical Specifications
Measurement ranges span DC voltage from 1 µVDC to 300 VDC and AC voltage from 1 µVRMS to 250 VRMS. DC current measurement extends from 1 µADC to 2 ADC; AC current from 1 µARMS to 2 ARMS. The instrument supports 2-wire and 4-wire resistance measurement, continuity testing, diode characterization, frequency measurement, and temperature sensing via optional thermistor probe.
Resolution reaches 5.5 digits with basic accuracy to 0.0025%. Common mode rejection exceeds 120 dB with 1 kΩ unbalanced load; normal mode rejection exceeds 60 dB at 50/60 Hz ±0.1%.
Input protection rated at 300 VDC for voltage inputs and 2 A, 250 V fast-blown fuse for current. The module draws +12 VDC at 2 A maximum.
Operating temperature range: 0°C to 55°C (full accuracy: 18°C to 28°C). Operating humidity: 50% RH non-condensing, or 50–90% RH at 40°C non-condensing. Storage temperature: –20°C to +70°C. Storage humidity: 5–90% RH non-condensing.
– Key Features
• High-speed USB 2.0 interface at 480 MBit/s
• CAT II 300 V over-voltage protection category
• Compact modular design fits U2781A mainframe or standalone operation
• 451 g shipping weight without bumpers
– Compatibility & Integration
Fully compatible with Keysight BenchVue, Measurement Manager (AMM), IO Libraries Suite, and IVI-COM drivers. Supports LabVIEW, VEE, Visual Studio, and MATLAB environments. Operates on Microsoft Windows (XP Professional or Home Edition recommended).
Complies with IEC 61010-1, CAN/CSA-C22.2 No. 61010-1, ANSI/UL 61010-1, IEC 61326-2-2002/EN61326:1997+A1:1998+A2:2001+A3:2003, ICES-001, and AS/NZS CISPR11.
