Moin John, On Sat, 16 Jan 2016 13:33:54 -0800 "John Miles" <j...@miles.io> wrote:
> Agreed with Magnus that there are a lot of possible variables in your setup > that need to be ruled out. Yes, too many. And it isn't really helping that I hardly understand what I am doing. > Are you using the SR620 driver in TimeLab, or did you find a way to get > it to emit data continuously via the RS232 port for use with the talk-only > driver? I am using TimeLab and start two acquisitions. That part seems to work quite nicely. > I've seen occasional instances where a counter has ignored every other > trigger when used in addressable mode by TimeLab. It's not always readily > reproducible, but the counter drivers in the current beta at > http://www.miles.io/timelab/beta.htm seem to be a bit less prone to that > behavior. If you aren't already using the beta, try that. Thanks! I'll try that tomorrow. > > It's always safest to use counters in talk-only mode when possible, since > that rules out any timing problems that might arise in a two-way GPIB or > serial conversation where each individual reading is requested by the > software as done by the 5313xA, Philips, DTS2070-series, and SR620 drivers. > Some of those counters can be used in both talk-only and addressable modes, > but I don't believe that's true of the SR620, unfortunately. All of the > programming examples in the SR620 manual work by requesting each reading > individually. Hmm.. I have set TimeLab to do samples every 0.1 seconds, and have an external trigger with the same interval (SR620 setting ist Ext +/- Time). Could it be that TimeLab just samples a little slower than the 0.1s, so that it misses a measurement once in a while and has to wait until the next trigger arrives? Attila Kinali -- It is upon moral qualities that a society is ultimately founded. All the prosperity and technological sophistication in the world is of no use without that foundation. -- Miss Matheson, The Diamond Age, Neil Stephenson _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.