HP/Agilent 34401A Digital Multimeter

HP/Agilent 34401A is a high-precision digital multimeter with 6.5-digit resolution, widely used in laboratory and production environments. It provides high accuracy and reliability, making it a popular choice among professionals.

Main Specifications:

• Resolution: 6.5 digits
• Basic DC voltage accuracy (24 hours): 0.0015%
• Basic AC voltage accuracy (1 year): 0.06%
• AC current frequency range: from 3 Hz to 300 kHz
• Measurement speed: up to 1000 readings per second when transferring data via GPIB
• Interfaces: GPIB and RS-232

Features:

• Hold function: allows you to focus on placing the test probes without constantly looking at the display.
• Built-in functions: continuity testing, diode checking, null function for eliminating wire resistance and other constant offsets.
• Additional features: display of minimum, maximum, and average values, direct measurements in dB and dBm.

Buying Used Instruments:

When purchasing a used HP/Agilent 34401A, consider the following points:

• Display brightness: Over time, the brightness of the vacuum fluorescent display may diminish. It's recommended to confirm the display's condition with the seller or request up-to-date photos of the device.
• Condition of switches and buttons: Ensure all controls are functional, especially the "Front/Rear" switch, which may fail over time.
• Measurement accuracy: Test all measurement ranges, including current and resistance, to identify any potential issues.