[time-nuts] Pendulum CNT91 with TimeLab

[John Miles]

TimeLab will capture and display the *IDN? result as the instrument name,
but it shouldn't reject the connection if it doesn't get what it expects.
How is it behaving when it rejects the data?

You've got to wonder what was going through the heads of the designers of
the various counters that didn't implement talk-only mode.   Of all the
obvious useful features to leave out... :(  

-- john, KE5FX
Miles Design LLC


> -----Original Message-----
> From: time-nuts-bounces at febo.com [mailto:time-nuts-
> bounces at febo.com] On Behalf Of GandalfG8 at aol.com
> Sent: Wednesday, October 09, 2013 12:32 PM
> To: time-nuts at febo.com
> Subject: [time-nuts] Pendulum CNT91 with TimeLab
> 
> Has anybody had any success setting up the Pendulum CNT91, or the
> Tektronix rebadged equivalent FCA3100, to run with TimeLab?
> 
> It was suggested here some time ago that it should be possible to achieve
> this by running the counter in talk only mode but so far I've had no luck
> with the FCA3100 and am aware of similar problems with the CNT91.
> 
> I suspect this is more likely a counter issue, or perhaps in my  case that
> should read "user issue":-) rather than anything to do with the  software.
> I'm using an NI USB GPIB adapter and can run the FCA3100 with the cut
down
> Tektronix supplied version of NI's Signal Express, but whilst I can  also
> talk to it using NI's Measurement and Automation Explorer any attempts
> with
> that to switch it into talk only mode either don't work or perhaps  it's
> reverting as soon as I close the software to switch over to  TimeLab.
> 
> I've also tried running the counter in GPIB "compatible" mode",  where
it's
> claimed to emulate the SCPI command set of the HP 5313x series, but  as
far
> as I can tell TimeLab is rejecting the data because it checks for a  valid
> HP ID string whilst the counters still respond as  either an FCA3100 or
> CNT91.
> 
> Regards
> 
> Nigel
> GM8PZR
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