Agilent / Keysight E1312A 6.5-Digit DMM, High Accuracy

The Agilent/Keysight E1312A is a 6.5-digit DMM housed as a B-size, 2-slot VXI module for high-precision measurement applications. Operating as a VXIbus message-based slave device, it delivers selectable resolution from 4.5 digits for speed to 6.5 digits for maximum accuracy. Its electrical design mirrors the C-size E1412A, differing only in physical form factor.

Technical Specifications

• Selectable resolution: 4.5 digits to 6.5 digits


• Speed: Up to 65 range changes per second and 30 function changes per second (DC voltage measurement) Measurement Functions


• DC Voltage


• AC Voltage


• DC Current


• AC Current


• Resistance (2-wire and 4-wire)


• Frequency


• Period


• Limit checks with TTL output


• DC voltage ratios Accuracy (Referenced to Electrically Identical E1412A)


• DC Voltage (10 V range): ±0.0015% of reading + 0.0004% of range at 24-hour accuracy (23°C ±1°C)


• AC Voltage (100 V range, Slow filter, sinewave, 1-hour warm-up): ±0.03% of reading + 0.01% of range


• Temperature coefficient: 0.0005 + 0.0001 for DC voltage on 10 V range (23°C ±5°C, 90-day spec) Module Configuration


• Form factor: VXIbus B-size, 2-slot module


• Interface: VXIbus message-based


• Programming: HP-IB (IEEE 488) via command module or embedded controller

Key Features Flexible resolution selection optimizes measurement speed versus accuracy for diverse test scenarios. Dual-interface capability

VXIbus and HP-IB - enables integration into legacy and modern test systems. The compact B-size format conserves chassis space while maintaining electrical performance parity with larger C-size instruments.

Typical Applications Precision data acquisition in modular test systems, automated electrical characterization, and high-accuracy DC/AC measurements requiring integration within VXI instrument racks.

Compatibility & Integration Native VXIbus operation supports message-based communication in VXI chassis environments. HP-IB programming interface enables control via external command modules, facilitating system integration with instruments from the Agilent/Keysight measurement ecosystem.