I'm working on a measurement setup using an HP 5334 TIC to capture single-shot 
PPS data that I log via GPIB.

For each reading I clear the counter, then poll using SRQ until data is ready.  
The measurement cycle seems to always take between 1.5 and 2 seconds, even if 
the start/stop signals arrive almost immediately.  The GPIB timeouts are short 
enough that I don't think they are causing the delay.  

I think what's happening is that the counter ignores the first stop/start pair 
to arrive, and measures the second -- as though it needs the first pair to arm 
itself before outputting the TI of the second pair.  

I seem to recall a workaround using the external ARM input but I can't remember 
(or find) it.  Does anyone recognize what I'm talking about and have a fix?  
BTW, I don't think this issue is specific to the 5334 counters.

Thanks,
John
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