Keithley 2302 Instruction Manual page 142

6-20 External Triggering (Model 2306-VS Only)
Example 5. Voltage step only on channel 1
Model 2306-VS configuration using channel 1 for voltage stepping and normal functionality
on channel 2:
*RST
:VOLT 0
:CURR 1.75
:SENS:FUNC 'VOLT'
:TRIG:EXT:BOTH NONE
:TRIG:EXT:STEP 1,1,1
:TRIG:EXT:STEP 2,2,2
:TRIG:EXT:STEP 3,3,1
:TRIG:EXT:STEP 4,4,2
:TRIG:EXT:STEP 5,5,1
:TRIG:EXT:STEP 6,6,2
:TRIG:EXT:STEP:READ NONE
:TRIG:EXT:STEP:VOLT ON
:TRIG:EXT:STEP:POIN 6
Loop:
:TRIG:EXT:ENAB ON
monitor for trigger out on channel 1 - will pulse low for about 10us
generate trigger in pulses after detecting trigger out pulses on channel 1 -
trigger in detected on falling edge
after generating the 6th trigger in pulse, the list will cycle back to 1 and
repeat
generate trigger in pulses to cycle the list again or
:TRIG:EXT:ENAB OFF
after changes go back to Loop
NOTES
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Since only voltage stepping is used, the :TRIG:EXT:ENAB:INIT command is not
needed when the list reaches the 6th step point. When only voltage stepping is used,
the list will automatically loop back around to step 1 after completing the
TRIG:EXT:STEP:POIN step number.
If you are unable to monitor for trigger out pulses, allow sufficient time between
trigger in pulses to allow the unit to complete each step (see the specifications in
Appendix A for time guidelines).
' reset the 2306-VS
' set the voltage
' set the current limit
' select the voltage functionality
' select channel 1 to only affect channel 1
' step 1 voltage is 1 with 1 second delay
' step 2 voltage is 2 with 2 second delay
' step 3 voltage is 3 with 1 second delay
' step 4 voltage is 4 with 2 second delay
' step 5 voltage is 5 with 1 second delay
' step 6 voltage is 6 with 2 second delay
' take no measurements while stepping voltage
' enable voltage stepping
' step voltage is 6 on channel 1
' enable voltage stepping on channel 1
' to make changes