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HP / Agilent · Multimeter

HP / Agilent 34401A software

Remote control and data logging for the HP / Agilent 34401A multimeter, on Windows, Linux and macOS - with the same panel BenchMesh uses for every multimeter.

Awaiting confirmation

Status

Very likely. Support for the HP / Agilent 34401A was written from HP / Agilent’s programming manual and follows the same engine as the bench-tested instruments, but nobody has confirmed it on a real 34401A yet. If you own one, connecting it once and reporting the result moves it to Community-confirmed.

Note: A Truevolt set to SYST:IDEN HP34401A answers like this too (compatible)

What you can do from BenchMesh

Multimeter panel 1 channel

Live readings

  • MEAS
  • MODE
  • OVERLOAD
  • RANGE

Settings you can change

  • Mode
  • Range
  • Rate

Connections

USB-serial / RS-232
9600 baud, 8N2. Plug in the USB cable (or a USB-RS-232 adapter); BenchMesh finds the port.

Sources

The definition was written from these documents (definition agilent_34401a v0.1.0).

  • HP 34401A User's Guide, pages 59, 90, 94, 106-121, 148-153, 159
  • Migrating 34401A RS-232 programs to the 34461A (5992-1455)

Have one on your bench?

Connect it, press Detect, try the controls - then tell us how it went. Every confirmation moves a model from “Awaiting” to “Community-confirmed” for everyone.

Download BenchMeshHow to confirm an instrument

Questions

Does BenchMesh work with the HP / Agilent 34401A?
Very likely. Support for the HP / Agilent 34401A was written from HP / Agilent’s programming manual and follows the same engine as the bench-tested instruments, but nobody has confirmed it on a real 34401A yet. If you own one, connecting it once and reporting the result moves it to Community-confirmed.
How do I connect the 34401A to my PC?
Over USB-serial / RS-232. 9600 baud, 8N2. Plug in the USB cable (or a USB-RS-232 adapter); BenchMesh finds the port. Then press Detect in BenchMesh: it identifies the multimeter by its reply and adds it to the bench.
What can I control on the 34401A?
Multimeter: set mode, range, rate; read meas, mode, overload, range.
Can I log 34401A measurements to CSV?
Yes. Right-click any reading to add it to a recording; every instrument on the bench is sampled on one shared timeline and exported as one CSV.
Is BenchMesh free?
Yes. BenchMesh is free and open source, for Windows, Linux and macOS, and works offline.