6-18
External Triggering (Model 2306-VS Only)
Example 3. Voltage step both channels and measure voltage both channels
2306-VS configuration using channel 1 for voltage stepping and channel 2 for measurements:
*RST
‘ reset the 2306-VS
:VOLT 0
‘ set the voltage
:CURR 1.75
‘ set the current limit
:SENS:FUNC 'VOLT'
‘ select the voltage functionality
:TRIG:EXT:BOTH VOLT
‘ select voltage for both on channel 1
:TRIG:EXT:STEP 1,1,1
‘ step 1 voltage is 1 with 1 second delay
:TRIG:EXT:STEP 2,2,2
‘ step 2 voltage is 2 with 2 second delay
:TRIG:EXT:STEP 3,3,1
‘ step 3 voltage is 3 with 1 second delay
:TRIG:EXT:STEP 4,4,2
‘ step 4 voltage is 4 with 2 second delay
:TRIG:EXT:STEP 5,5,1
‘ step 5 voltage is 5 with 1 second delay
:TRIG:EXT:STEP 6,6,2
‘ step 6 voltage is 6 with 2 second delay
:TRIG:EXT:STEP:READ NONE
‘ take no measurements while stepping voltage
:TRIG:EXT:STEP:VOLT ON
‘ enable voltage stepping
:TRIG:EXT:STEP:POIN 6
‘ step voltage is 6 on both channels
:SOUR2:VOLT 0
‘ set the voltage
:SOUR2:CURR 1.25
‘ set the current limit
:SENS2:FUNC 'VOLT'
‘ select the voltage functionality
:TRIG2:EXT:BOTH AUTO
‘ select auto measurements for both on chan. 2
:TRIG2:EXT:STEP 1,0.25,1
‘ step 1 voltage is 0.25 with 1 second delay
:TRIG2:EXT:STEP 2,0.5,2
‘ step 2 voltage is 0.5 with 2 second delay
:TRIG2:EXT:STEP 3,0.75,1
‘ step 3 voltage is 0.75 with 1 second delay
:TRIG2:EXT:STEP 4,1,2
‘ step 4 voltage is 1 with 2 second delay
:TRIG2:EXT:STEP 5,1.25,1
‘ step 5 voltage is 1.25 with 1 second delay
:TRIG2:EXT:STEP 6,1.5,2
‘ step 6 voltage is 1.5 with 2 second delay
:TRIG2:EXT:STEP:READ AUTO
‘ take auto measurements
:TRIG2:EXT:STEP:VOLT OFF
‘ disable voltage stepping
:TRIG2:EXT:STEP:POIN 6
‘ step voltage is 6 on both channels
Loop 1:
:BOTHTRIGEXT BOTHON
‘ enable both functionality on each channel
monitor for the trigger out pulses
Loop 2:
generate 6 trigger in pulses on each channel & look for trigger out pulses -
make sure a new trigger in pulse occurs after each trigger out pulse. Trigger
in pulses are ignored until the trigger out pulses. Trigger ins detected on
falling edge and trigger outs pulse low for about 10us.
:FETCH:ARR?
‘ read channel 1 measurements
:FETCH2:ARR?
‘ read channel 2 measurements
:TRIG2:EXT:ENAB:INIT
‘ init for a new set of measurements on
‘ each channel.
‘ channel one will cycle list since stepping only
even though channel 2 stops measuring
go back to Loop 2
:BOTHTRIGEXT BOTHOFF
‘ turn off both functionality when down or for
‘ changes
go back to Loop 1 after making changes
NOTE
If you are unable to monitor for trigger out pulses, either:
(1) monitor the buffer full bit in the status model (Section 8), or
(2) allow sufficient time between trigger in pulses to allow the unit to complete each
step (see the specifications in Appendix A for time guidelines).
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176
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