Hi,
I use Keithley 2002 with a scanner card to perform resistance measurement on channel 1, voltage DC measurement on channel 2 and resistance measurements on channel 4. Channel 2 should be set to take 1024 measurement points each 0,321sek, after an external trigger. During the measurement, the data should be stored in the buffer of Keithley. The same procedure should be done on channel 4 just that instead of voltage resistance is measured. The algorithm should be as follows: first take the measurement on channel 1, then set and make measurements on channel 2, and then set and measure on channel 4 (everything in a while loop). My problem is that the data taken and stored in a buffer are sometimes OK and sometimes unreasonable values (for example I give out a sinus wave +-15V 10mHz, so the readings should be between +-15V but I get also a lot of 0 and values above 10000, and on display, the values look OK during the measurement) or there are only 826 points instead of 1024. So I guess that I did not set the buffer and trigger layers properly. I also attached the Vi of how I set channel 2 and channel 4, if someone could help me with these?
