Author Topic: Interfacing the HP3490A with an AR488  (Read 607 times)

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Offline Joel_STopic starter

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Interfacing the HP3490A with an AR488
« on: June 20, 2024, 09:12:56 am »
I am trying to control an HP3490A DVM from a PC via GPIB with an Arduino-based AR488, using PuTTY as the user interface.
So far, two things already work :
- When the 3490A is in "talk only" mode, measurement data is received and displayed as expected
- When in "addressed" mode, I am able to control the functions of the 3490A (select functions, switch ranges etc ...) as explained in table 3-7, page 3-10 of the 3490A manual.
However, when in "addressed" mode, I cannot receive measurement results over the HP-IB. It seems that the 3490A requires the ATN line to be activated, but the AR488 manual doesn't provide any information on how to do that.
Any help would be appreciated ... the 3490A is a very nice beast !
Joel Setton

Offline Roehrenonkel

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