Key facts
- Brand
- Agilent
- Model
- 34401A
- Category
- Other
- Industry
- Electronics
- Documents
- 4
- Languages
- ZH · EN
- Last added
- 2026-10-01
Start here
Agilent 34401A 6½ Digit Multimeter User Guide
This guide explains how to connect the Agilent 34401A multimeter to a PC using the Agilent Connection Expert, install the required IO Libraries, and verify communication via GPIB. It also covers basic operation, menu navigation, measurement functions, resolution settings, and trigger options.
Safety information is provided, including warnings about electrical hazards, proper grounding, and procedures to follow before servicing the instrument. The manual lists the measurement capabilities, IEC category, and default GPIB address, helping users configure the device for accurate measurements. This manual is written in Chinese.
Agilent 34401A specifications
| Measurement types | AC/DC voltage, AC/DC current, 4‑wire resistance, temperature |
|---|---|
| Resolution options | 4, 5, or 6 bits |
| Default GPIB address | 22 |
All Agilent 34401A documents by type
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Disassembly, diagnostics and part numbers, for repair.
Questions answered in these manuals
What safety precautions must be taken before servicing the instrument?
Disconnect the power cord from the wall outlet, remove all test leads, and only qualified personnel who have completed repair training may open the instrument cover.
How can I change the measurement resolution?
Press the Shift key together with the resolution key to select 4‑bit, 5‑bit, or 6‑bit resolution; 4‑bit gives faster measurements, while 6‑bit provides higher accuracy.
What is the default GPIB address of the 34401A?
The factory default GPIB address is 22.
What safety category is the multimeter rated for?
It is rated for IEC measurement category II, allowing connection to mains up to 300 V.
What interfaces does the Agilent 34401A support?
It supports both GPIB (IEEE‑488) and RS‑232 interfaces.
How many readings can be stored in the multimeter’s memory?
The multimeter can store up to 512 readings.