The Keysight E1412A is a 6.5-digit high-accuracy multimeter engineered as a C-size, single-slot VXI module for precision measurement in R&D, automated test, and manufacturing environments. Built around a multi-slope III A/D converter, it delivers exceptional linearity and low noise across DC/AC voltage, current, resistance, frequency, and period measurements. The E1412A combines 6.5-digit resolution with measurement capabilities traditionally found in higher-digit instruments, yet maintains pricing aligned with 5.5-digit multimeters.
Technical Specifications
Measurement Ranges and Accuracy
• DC Voltage: 100.0000 mV to 300.0000 V with accuracy to ±0.0019% of reading + ±0.0005% of range (10.00000 V range, 1-hour warm-up, 23°C ± 1°C)
• AC Voltage: 100 mV rms to 300 V rms with true RMS detection up to 5:1 crest factor; bandwidth 3 Hz–300 kHz; selectable slow, medium, or fast filters
• DC Current: Up to 3 A with externally accessible fuses
• AC Current: Up to 3 A with true RMS detection
• Resistance: 2- and 4-wire configuration up to 100 MΩ
• Frequency and Period: Up to 300 kHz using reciprocal counting with gate times of 10 ms, 100 ms, or 1 s; auto-ranging available
Converter and Input Characteristics
• A/D Converter: Multi-slope III architecture
• DC Input Impedance: Switchable 10 MΩ / 10 GΩ
• Input Bias Current: < 30 pA
• Temperature Coefficient: Stable 0°C to 55°C
• Overvoltage Protection: 300 V on all ranges
– Key Features
• 6.5-digit display resolution
• High-speed measurement: 65 DCV range changes per second; 30 function changes per second
• Internal memory: 1000 readings at 4.5-digit resolution for buffered acquisition
• Advanced calculations: NULL, MIN/MAX, LIMIT, dB, dBm, DC voltage ratios
• TTL output for limit checks
• 1-hour warm-up to reach calibration specifications
– Typical Applications
Precision DC/AC measurements in component characterization, circuit validation, automated test system integration, and production quality assurance.
– Compatibility & Integration
VXI message-based module with A16 data transfer support. Deploys in standard VXI mainframes. Electrical design identical to E1312A except for module size.
