[time-nuts] Pendulum CNT91 with TimeLab

[GandalfG8 at aol.com]

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