[volt-nuts] Solartron 7081 serial comms

David C. Partridge david.partridge at perdrix.co.uk
Fri Jul 7 12:12:14 EDT 2017

Addendum: Serial port will talk to a Solartron 7151 OK.

-----Original Message-----
From: volt-nuts [mailto:volt-nuts-bounces at febo.com] On Behalf Of David C. Partridge
Sent: 07 July 2017 13:44
To: 'Discussion of precise voltage measurement'
Subject: [volt-nuts] Solartron 7081 serial comms

Well that's odd.  I just tried to talk to three different 7081s from two different computers via the serial port using Putty and a null-modem cable.

Port set for 9600,8,n,1   7081 dip switches in the OFF position.

Result a deafening silence even after an "OUTPUT,RS232,ON" command typed blind at the Putty console.

I have buzzed out the serial cable which looks like:


I know this has worked before as I used the serial port for calibration last year.

Should I be using a straight-through cable?  My memory says no, but ...

I even rolled back Windows 10 Creators Update in case that was the culprit.


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