Keithley DMM6500 User Manual

DMM6500
6½ Digit Multimeter User's Manual Section 7:
Scanning temperature at a set time interval
DMM6500-900-01Rev. A / April 2018 7-5
Using SCPI commands
This sequence of SCPI commands executes a thermocouple-based temperature scan every minute
for 24 hours.
You may need to make changes so that this code will run in your programming environment. In the
table, the SCPI commands have a light gray background. The light green shaded code represents
pseudocode that will vary depending on the programming environment you use.
Make sure the TERMINALS switch is set to REAR.
Send the following commands for this example application:
The scan count is 24 * 60; the channel count (chanCount) is 9; total number of readings (totalRdgs)
is scanCount * chanCount
Commands Descriptions
*RST
 Reset the DMM6500
TRAC:CLEar "defbuffer1"
 Clear the data buffer
TRAC:POIN totalRdgs,
"defbuffer1"

Set the scan count to 12,960
FUNC 'TEMP', (@1:10)
 Set the function to temperature
TEMP:UNIT CELS, (@1:10)
 Set up all channels to use degrees celsius
TEMP:TRAN CJC2001, (@1)
 Set up channel 1 reference junction
TEMP:TRAN TC, (@2:10)
 Set the transducer type to thermocouple
TEMP:TC:TYPE K, (@2:10)
 Set thermocouple type to K
TEMP:TC:RJUN:RSEL EXT, (@2:10)
 Set the reference junction to external
TEMP:NPLC 1, (@2:10)
 Set NPLC to 1
ROUT:SCAN:INT 60
 Set the scan-to-scan delay to 60 sec
ROUT:SCAN:COUN:SCAN 12960
 Set the scan count to 12,960 (24hrs * 60s * 9chan)
ROUT:SCAN:CRE (@2:10)
 Set the scan list
ROUT:SCAN:EXP "/usb1/scan24hr",
EACH, ALL
 Prepare the scan to export the buffer to USB after each
scan
ROUT:SCAN:REST ON
 Enable restart on power loss
INIT
 Start the scan
*WAI
 Suspend the scan
TRAC:DATA? 1, totalRdgs,
"defbuffer1\", READ
 Read out all data after scan completes

Keithley DMM6500 Specifications

General

Brand	Keithley
Model	DMM6500
Category	Multimeter
Language	English