[time-nuts] General Purpose Instrument Troubles

Hubert v. Bonhorst hbonhorst at aol.com
Fri Nov 26 17:36:01 EST 2004

I do not think your problem is with the GPIB control or GPIB itself. 
Probably your 1992 was originally sold to the miitary. Sometimes you even 
find NSN on it. If this is the case the counter speaks a very special 
language to control it. It has nothing to do with its native commands. 
Internal to the counter you will find a GPIB board with some jumpers on it. 
Have a look in the service manual and change to native code, After that 
everything works perfect. If you have any result, please confirm by mail.
I do no longer have this counter, but it is a good instrument
Best regards
----- Original Message ----- 
From: "Bill Hawkins" <bill at iaxs.net>
To: "Discussion of precise time and frequency measurement" 
<time-nuts at febo.com>
Sent: Friday, November 26, 2004 8:27 PM
Subject: [time-nuts] General Purpose Instrument Troubles

> Have a Racal-Dana 1992 counter with a GPIB interface.
> Also have a National Instruments 488.2 ISA bus card with
> software dated July 2000, with PDF manuals. Found a PDF
> manual for the 1992 on the net and focused on the GPIB
> stuff.
> Hooked them up with an IBM 365 PC running Win98. NI 488.2
> controller sees the 1992. 1992 reacts when NI sends ID
> string, but nothing else works - all result in timeout.
> 1992 manual says it is using 1978 vintage GPIB, and I cannot
> find the ID string that the NI controller is using.
> I suspect that my problem is compounded incompatibilities.
> Is 488.2 compatible with the earlier 488?
> Any insight appreciated.
> Bill Hawkins
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