Tektronix Keithley SourceMeter 2450 - TSP Commands: Trigger Model

Model 2450
SourceMeter® Instrument User's Manual Section 7: Measuring I-
V characteristics of FETs
2450-900-01 Rev. E / August 2019 7-11
Set up the application using TSP commands with the trigger
model
Send the following commands for this example application:
-- Reset the instruments and the TSP-Link connection, and clear the buffers.
tsplink.initialize()
-- If the tsplink state is not online, print an error message and quit
state = tsplink.state
if state ~= "online" then
print("Error:\n-Check that all SMUs have a different node number")
print("-Check that all SMUs are connected correctly\n")
return
end
reset()
-- ######################## Model 2450 #1 (gate) setup ################
steppoints = 4
-- Set up the source function.
smu.source.configlist.create("stepVals")
smu.source.func = smu.FUNC_DC_VOLTAGE
smu.source.autorange = smu.ON
-- Set up the measure function.
smu.measure.func = smu.FUNC_DC_CURRENT
smu.measure.autorange = smu.ON
smu.measure.terminals = smu.TERMINALS_REAR
-- Set up TSP-Link triggering.
tsplink.line[1].reset()
tsplink.line[1].mode = tsplink.MODE_SYNCHRONOUS_MASTER
tsplink.line[2].mode = tsplink.MODE_SYNCHRONOUS_ACCEPTOR
trigger.tsplinkout[1].stimulus = trigger.EVENT_NOTIFY1
trigger.tsplinkin[2].clear()
trigger.tsplinkin[2].edge = trigger.EDGE_RISING
-- Populate the stepVals source config list, with source levels 2 V to 5 V
for i = 2, 5 do
smu.source.level = i
smu.source.configlist.store("stepVals")
end
-- Set up the trigger model.
trigger.model.setblock(1, trigger.BLOCK_CONFIG_RECALL, "stepVals")
trigger.model.setblock(2, trigger.BLOCK_SOURCE_OUTPUT, smu.ON)
trigger.model.setblock(3, trigger.BLOCK_MEASURE_DIGITIZE)
trigger.model.setblock(4, trigger.BLOCK_NOTIFY, trigger.EVENT_NOTIFY1)
trigger.model.setblock(5, trigger.BLOCK_WAIT, trigger.EVENT_TSPLINK2)
trigger.model.setblock(6, trigger.BLOCK_CONFIG_NEXT, "stepVals")
trigger.model.setblock(7, trigger.BLOCK_BRANCH_COUNTER, steppoints, 3)
trigger.model.setblock(8, trigger.BLOCK_SOURCE_OUTPUT, smu.OFF)