I'm not sure whether this is a hardware or a software issue. I'm trying to communicate with a Stanford Reserach Systems computer interface module, SR245. I use the "serial write" command in labview to query the value of one of the channels on the SR245. I then read the port using the standard "serial read" command. If I put this into a loop to read the channel multiple times, each iteration takes ~300 ms, which is prohibitively long. I have no idea why it's going so slowly; according to what I can gather from the manual for the SR245, the A/D rate should be in the vicinity of 1 kHz and the box takes 500 us to complete an average function like the one I am requesting.

Instrument Control (GPIB, Serial, VISA, IVI)

So you are reading 3 values per second. That is not slow for a bench instrument!

What is the max measuring speed in the manual?

greetings from the Netherlands

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