Agilent/Keysight E1412A

The Agilent/Keysight E1412A is a 6.5-digit VXI digital multimeter housed in a C-size, single-slot form factor. This message-based module delivers high-accuracy DC and AC measurements, resistance characterization, and frequency analysis for automated test systems. Built around a multi-slope III A/D converter, it achieves DC voltage accuracy as low as ±0.0019% under controlled conditions, with switchable input impedance (10 MΩ/10 GΩ) to minimize circuit loading.

– Technical Specifications

Measurement Ranges & Accuracy
• DC Voltage: 300 V maximum; ±0.0015% of reading + 0.0004% of range (24-hour, 23°C ±1°C)
• AC Voltage: 300 V maximum; ±0.07% typical; true RMS to 5:1 crest factor; 3 Hz – 300 kHz bandwidth
• DC Current: 3 A maximum
• AC Current: 3 A maximum; true RMS detection
• Resistance: 100 MΩ maximum; 2-wire and 4-wire configurations
• Frequency/Period: 300 kHz maximum; reciprocal counting; gate times 10 ms to 1 s; auto-ranging

DC Current Accuracy (3 A range, 1-hour warm-up)
• 24 Hour (23°C ±1°C): ±0.03% of reading + 0.005% of range
• 90 Day (23°C ±5°C): ±0.04% of reading + 0.006% of range
• 1 Year (23°C ±5°C): ±0.05% of reading + 0.006% of range

Resistance Accuracy (100 Ω range, 1-hour warm-up)
• 24 Hour (23°C ±1°C): ±0.01% of reading + 0.005% of range

Module & Interface
• Form Factor: C-size VXI, 1-slot, message-based
• Warm-up Time: 1 hour to specification
• Input Protection: 300 V on all ranges
• Temperature Stability: 0°C to 55°C

– Key Features

• Selectable AC filters (slow, medium, fast) for optimized noise rejection and bandwidth control
• Function changes at 30 per second; range changes at 65 per second
• Internal memory: 1000 readings at 4.5-digit resolution for buffered acquisition
• Measurement functions: DCV, ACV, DCI, ACI, 2/4-wire resistance, frequency, period
• Calculations: NULL, MIN/MAX, LIMIT, dB, dBm
• DC voltage ratio measurements
• TTL output drive for limit checking

– Typical Applications

Automated production testing, R&D validation, quality control, and precision measurement within VXI-based instrumentation systems.

– Compatibility & Integration

Operates as a message-based VXI module within standard VXI mainframes and instrument controllers.