Scanning - Keithley 2750 User Manual

Model 2750 Multimeter/Switch System User's Manual Signal Processing Sequence and Data Flow D-13

Scanning

For remote operation, scanning is normally performed with continuous initiation disabled
(INIT:CONT OFF). The sample count (SAMP:COUNt) specifies the number of channels
to scan and store in the buffers (sample buffer and data store), and the trigger count
(TRIG:COUNt) specifies the number of scans to perform. Note that if the trigger count is
>1, the data for each subsequent scan will overwrite the data stored in the sample buffer
and data store.
Once the scan is properly configured, INIT or READ? will start the scan. READ? also
returns the scanned readings (data arrays) from the sample buffer or the CALC1 block if
Math is enabled. FETCh? will not start a scan, but it will return the readings already
stored.
While the scan is in process, SENS:DATA? and CALC1:DATA? commands can be used to
return the latest data array. When used after the scan is finished, they will return the data
array for the last stored reading.