Tom Van Baak wrote: >>SRQ is definitely a pain, but is hard to do without if you're doing >>anything with multiple instruments on the bus; my current problem is >>trying to read frequency from a 5370A and voltage from the 3456A to plot >>VCO performance. Without the SRQ, I'm getting missing voltmeter readings. > > > Does it work, in a loop, to send 3456A commands > to read voltage, get the response, and then 5370A > commands to read frequency, and get a response? > > /tvb
Yes, but I've been getting occasional squirrely values from the 3456A in that mode, possibly because of a timeout and without using the bus signals there's no way to check whether the instrument has actually completed. There are code workarounds to that, but I was hoping to use the "data ready" bit to validate the reading. But I think I may have found the problem -- I just ran through the internal test set, and I'm getting a failure on the RAM test. That probably explains the SRQ failure, and may even explain why every so often a reading isn't in the right format. Now I just need to find a couple of ancient 4118 RAM chips. John _______________________________________________ time-nuts mailing list [email protected] https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
