Agilent / Keysight 34461A Digital Multimeter, 6 Digit, Truevolt DMM

The Keysight 34461A is a 6½ digit digital multimeter engineered for precise measurements across DC/AC voltage, current, resistance, frequency, and specialized functions. Built on Truevolt technology, this instrument eliminates real-world measurement errors - noise, input bias current, and injected current - delivering 35 ppm basic DCV accuracy (0.0035%) and true RMS AC measurements with crest factor support up to 10. Measurement capabilities span DCV to 1000 V, ACV to 750 V, DC/AC current from 100 µA to 10 A, 2- and 4-wire resistance from 100 Ω to 100 MΩ, frequency and period from 3 Hz to 300 kHz, capacitance, diode testing, continuity, and temperature via RTD/PT100 and thermistor sensors.

The 4.3-inch color graphical display supports number, histogram, bar chart, and trend chart modes, enabling real-time data visualization. Internal memory stores 10,000 readings with data logging for trend analysis and digitizing mode for transient capture.

Technical Specifications

• Voltage (DCV): 0–1000 V


• Voltage (ACV): 0–750 V


• Current (DC/AC): 100 µA–10 A


• Resistance: 100 Ω–100 MΩ (2- and 4-wire)


• Frequency/Period: 3 Hz–300 kHz


• Capacitance: Available


• Temperature: RTD/PT100 and thermistor support


• Resolution: 6½ digits


• Basic DCV Accuracy (1-year): 35 ppm


• Maximum Reading Rate: 1,000 readings/s (4½ digits)


• Display: 4.3-inch color graphical


• Memory: 10,000 readings internal storage


• Dimensions: 4.09 in (H) × 11.94 in (L) × 10.28 in (W)


• Weight: 8.3 lbs

Key Features

• True RMS with direct digital sampling; crest factor capability to 10 without additional error terms


• Injected current minimized to less than 30% of comparable instruments


• ISO/IEC 17025 tested and guaranteed specifications


• Diode testing with 5 V range


• Continuity testing


• Data logging and trend analysis modes


• Transient digitizing capture

Interfaces & Connectivity

• USB and LAN/LXI standard


• GPIB optional (factory-installed or customer-installable)


• Front-panel USB memory connector for file transfer

Compatibility & Integration 100% SCPI-compatible drop-in replacement for the Keysight 34401A Digital Multimeter, enabling direct integration into existing test systems without code or hardware modifications.