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Problem connecting to 34401A using RS-232
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Zoli:

--- Quote from: NaxFM on September 17, 2022, 03:27:23 pm ---...
Edit: well, i wrote a little python script and now i can talk to the dmm no problem. The culprit was putty,  i suspect it may act on the control lines when it souldn't, and this confuses the DMM...

--- End quote ---
I don't know how relevant is for your situation, but here's my experience with 34401A&MTTTY: typed command doesn't get any answer, but the same command sent as text worked(34401A ver 10-05-02); I suspect there is a timeout between the received characters.
HKJ:
If you need some software for it, you can always use: https://lygte-info.dk/project/TestControllerIntro%20UK.html

It also has a thread here: https://www.eevblog.com/forum/testgear/program-that-can-log-from-many-multimeters/
NaxFM:
This is great, thanks!
Extremely useful, i was going to write a python script to do a fraction of what your program does.
Thank you again!
HKJ:

--- Quote from: NaxFM on September 20, 2022, 07:47:19 am ---This is great, thanks!
Extremely useful, i was going to write a python script to do a fraction of what your program does.
Thank you again!

--- End quote ---

Remember to press F1 (To show some help) in the different forms and windows, not all functions may be obvious from a look.
The help will be shown in a browser and is a webpage on my website, you can also find all of the help pages from the intro page linked above.
Fgrir:

--- Quote from: Zoli on September 17, 2022, 04:24:51 pm ---I suspect there is a timeout between the received characters.

--- End quote ---
If this is the problem you might try setting the PuTTY option for "Local line editing" to "Force on".  This should prevent it from sending any characters until you finish typing a line.
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