Agilent/Keysight U3401A
The Agilent/Keysight U3401A is a 4.5-digit digital multimeter offering a broad range of measurement functions including DC/AC voltage and current, resistance, frequency, capacitance, and temperature. It features a bright LCD display, USB connectivity for data logging, and built-in math functions for advanced analysis. Ideal for electronics testing, troubleshooting, and education.
- Model
- Agilent / Keysight U3401A
- Calibration
- Available on request
- Price
- $450
- Status
- In stock
- RFQ ref
- U3401A
This unit
The Agilent/Keysight U3401A is a 4.5-digit dual-display digital multimeter delivering 11 measurement functions and 6 built-in math operations for electronics testing, troubleshooting, and educational applications. The instrument features a bright VFD display enabling simultaneous dual-parameter viewing, with 50,000 counts resolution and a fixed 10 Ω continuity threshold. DC voltage accuracy reaches 0.02%.
Current measurements extend to 10 A AC and DC. Frequency measurements reach 500 kHz with 0.01 Hz resolution. Resistance testing covers up to 50 MΩ with 10 mΩ resolution.
The meter includes diode testing and AC + DC voltage and current support.
Technical Specifications
- DC Voltage: 0.02% accuracy
- AC Voltage: Supported
- DC Current: Up to 10 A
- AC Current: Up to 10 A
- AC + DC Voltage: Supported
- AC + DC Current: Supported
- Resistance: Up to 50 MΩ with 10 mΩ resolution
- Frequency: Up to 500 kHz with 0.01 Hz resolution
- Continuity Test: Fixed 10 Ω threshold
- Diode Test: Supported
- Display: 4.5-digit VFD with 50,000 counts resolution
- Input Voltage: 90 VAC to 264 VAC, 50/60 Hz
Key Features
- Dual VFD display for simultaneous dual readings
- Math functions: dBm (2 Ω to 8000 Ω reference impedance), REL, Min/Max, COMP, Hold, Percentage
- USB connectivity for data logging
- Kensington lock slot for security
- Anti-slip protective bumpers on front and rear panels
- Indoor use design
Typical Applications
- Electronics testing and troubleshooting
- Educational environments
- Communications and test setups
Compatibility & Integration The U3401A operates across standard worldwide AC power distributions (90–264 VAC, 50/60 Hz) and integrates USB connectivity for automated data logging in bench and field measurement scenarios.
Agilent / Keysight U3401A — Repair & Calibration Service
Aumictech offers NIST-traceable calibration and repair for the Agilent / Keysight U3401A. Calibration covers DC voltage accuracy at all ranges, AC voltage (True RMS) accuracy at 50 Hz, 1 kHz, and 10 kHz, DC current accuracy, resistance accuracy at all decade ranges, frequency accuracy, and diode test voltage. Fluke 87V and 289 also include capacitance and temperature calibration.. All calibrations ship with a NIST-traceable certificate. Turnaround is typically 1–3 business days after receipt.
Common Agilent / Keysight U3401A faults: blown input fuse, worn input jacks, display segment failure, relay contact wear on bench DMMs. Common faults include worn input jacks (banana socket contact wear on the mA and COM terminals), blown input fuses (especially the 440 mA HRC fuse), and display segment failures. Keithley 2000/2001/2002 bench DMMs commonly develop relay contact wear affecting resistance accuracy after extended service.
Agilent / Keysight U3401A price
This Agilent / Keysight U3401A is listed at $450. Calibration is available separately from $450. Contact us for volume pricing or if you need multiple units.
Agilent / Keysight U3401A calibration cost
NIST-traceable calibration for the Agilent / Keysight U3401A is $450 (standard — pass/fail certificate and calibration sticker) or $650 (full measured data at every test point, reference standards documented, traceability chain included). Calibration for this instrument covers DC voltage accuracy at all ranges, AC voltage (True RMS) accuracy at 50 Hz, 1 kHz, and 10 kHz, DC current accuracy, resistance accuracy at all decade ranges, frequency accuracy, and diode test voltage. Fluke 87V and 289 also include capacitance and temperature calibration.. Turnaround is 1 to 3 business days after receipt. See full calibration details →
