[time-nuts] HP5342A GPIB programming

[John Miles]

Hmm, no, according to the 5342A manual, it uses CR+LF termination, so the
normal query.exe utility should work.  It must be a triggering issue.

Try the command

	query 2 "AUSR4T2ST1" 500

AU  = auto frequency mode select (as opposed to M=manual)
SR4 = 10 Hz resolution
T2  = fast sample (no delay)
ST1 = output only when addressed

That's similar to Example 2 on page 3-25 of the manual, which doesn't rely
on the 'trg 702' statement in the first example.  Either T0 or T2 mode (page
3-23) should work with query.exe; T1 may not.

Also try it with ST1 versus ST2 in the last three characters of the command,
to see if that makes a difference.

-- john, KE5FX


> -----Original Message-----
> From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com]On
> Behalf Of John Miles
> Sent: Wednesday, January 30, 2008 5:38 PM
> To: Discussion of precise time and frequency measurement
> Subject: Re: [time-nuts] HP5342A GPIB programming
>
>
> Sounds like a handshaking issue.  It may not be related, but you
> might take
> a look at the 5345a.cpp example.  The 5345A is kind of nonstandard in that
> it terminates responses with CR (ASCII 13) rather than CR/LF
> and/or EOI.  I
> have to set the EOS character to 13 in 5345a.cpp to receive any data from
> it.
>
> -- john, KE5FX
>
>
> > -----Original Message-----
> > From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com]On
> > Behalf Of Matt Ettus
> > Sent: Wednesday, January 30, 2008 5:25 PM
> > To: Discussion of precise time and frequency measurement
> > Subject: [time-nuts] HP5342A GPIB programming
> >
> >
> > I have an HP5342A with GPIB, and am having trouble getting a reading
> > out of the GPIB interface.  It seems to work ok, and when I send it
> > commands with talk.exe from the KE5FX GPIB tools, it responds to the
> > command.  But any time I query it, it just sits there and times out,
> > although the front panel indicates something is happening.  In the
> > manual, it talks about sending an HP BASIC command to trigger a
> > measurement, but I don't know how to do that with the command line
> > tools.
> >
> > Any ideas?
> >
> > Thanks,
> > Matt
> >
>
>
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