Hello,
I am new to TSB scripting and I have problem on re-coding TSB script to work in LabVIEW VISA environment especially with function command in script. I couldn't find best tutorial on the re-coding TSB script into LabVIEW.
I have 2x 2651 A keithley instruments and I have TSB program. I tried to use one example file: KE2651A_Fast ADC Usage.tsp and copy/paste the code into LabVIEW VISA write string. I did different approaches and failed to generate the data as I can do with TSB that can easily generate data. I try to get LabVIEW VISA environment to generate data just like TSB could but I got various errors with some approaches and also sometimes got no errors but unable to get any data.. Also, for loop from script seems is also a problem that LabVIEW complained about..
I would appreciate any help. Once I learn how to translate any TSB scripts into LabVIEW then rest should be easy..
Thanks!
I'll copy/paste one *.tsp code example here.
--[[
Title: Fast ADC Usage
Description: This script is designed to output pulses and
capture both the current and the voltage of the pulse using
the fast ADC of the Model 2651A High Power System SourceMeter
instrument.
Equipment Needed:
1x 2651A
]]
--[[
Name: CapturePulseV(pulseLevel, pulseWidth, pulseLimit,
numPulses)
Description:
This function outputs voltage pulses with a 1% duty cycle and
performs measurements using the fast ADC to capture each pulse in
its entirety. At the conclusion of the pulse train, the data is
returned to the instrument console in a Microsoft Excel
compatible format.
Parameters:
pulseLevel: The voltage level of the pulse in volts
pulseWidth: The width of the pulse in seconds
100e-6 <= pulseWidth <= 4e-3
pulseLimit: The current limit of the pulse in amps
numPulses: The number of pulses to output
Example Usage:
CapturePulseV(5, 300e-6, 50, 5)
]]
function CapturePulseV(pulseLevel, pulseWidth, pulseLimit, numPulses)
if (numPulses == nil) then numPulses = 1 end
-- Configure the SMU
reset()
smua.reset()
smua.source.func = smua.OUTPUT_DCVOLTS
smua.sense = smua.SENSE_REMOTE
smua.source.rangev = pulseLevel
smua.source.levelv = 0 -- The bias level
smua.source.limiti = 5 -- The DC Limit
smua.measure.autozero = smua.AUTOZERO_ONCE
-- Use a measure range that is as large as the biggest
-- possible pulse
smua.measure.rangei = pulseLimit
smua.measure.rangev = pulseLevel
-- Select the fast ADC for measurements
smua.measure.adc = smua.ADC_FAST
-- Set the time between measurements. 1us is the smallest
smua.measure.interval = 1e-6
-- Set the measure count to be 1.25 times the width of the pulse
-- to ensure we capture the entire pulse plus falling edge.
smua.measure.count =
(pulseWidth / smua.measure.interval) * 1.25
-- Prepare the reading buffers
smua.nvbuffer1.clear()
smua.nvbuffer1.collecttimestamps = 1
smua.nvbuffer1.collectsourcevalues = 0
smua.nvbuffer2.clear()
smua.nvbuffer2.collecttimestamps = 1
smua.nvbuffer2.collectsourcevalues = 0
-- Can't use source values with async measurements
-- Configure the Pulsed Sweep setup
-----------------------------------
-- Timer 1 controls the pulse period
trigger.timer[1].count = numPulses - 1
-- -- 1% Duty Cycle
trigger.timer[1].delay = pulseWidth / 0.01
trigger.timer[1].passthrough = true
trigger.timer[1].stimulus = smua.trigger.ARMED_EVENT_ID
-- Timer 2 controls the pulse width
trigger.timer[2].count = 1
trigger.timer[2].delay = pulseWidth - 3e-6
trigger.timer[2].passthrough = false
trigger.timer[2].stimulus =
smua.trigger.SOURCE_COMPLETE_EVENT_ID
-- Configure SMU Trigger Model for Sweep/Pulse Output
-----------------------------------------------------
-- Pulses will all be the same level so set start and stop to
-- the same value and the number of points in the sweep to 2
smua.trigger.source.linearv(pulseLevel, pulseLevel, 2)
smua.trigger.source.limiti = pulseLimit
smua.trigger.measure.action = smua.ASYNC
-- We want to start the measurements before the source action takes
-- place so we must configure the ADC to operate asynchronously of
-- the rest of the SMU trigger model actions
-- Measure I and V during the pulse
smua.trigger.measure.iv(smua.nvbuffer1, smua.nvbuffer2)
-- Return the output to the bias level at the end of the pulse/sweep
smua.trigger.endpulse.action = smua.SOURCE_IDLE
smua.trigger.endsweep.action = smua.SOURCE_IDLE
smua.trigger.count = numPulses
smua.trigger.arm.stimulus = 0
smua.trigger.source.stimulus = trigger.timer[1].EVENT_ID
smua.trigger.measure.stimulus = trigger.timer[1].EVENT_ID
smua.trigger.endpulse.stimulus = trigger.timer[2].EVENT_ID
smua.trigger.source.action = smua.ENABLE
smua.source.output = 1
smua.trigger.initiate()
waitcomplete()
smua.source.output = 0
PrintPulseData()
end
function PrintPulseData()
print("Timestamp\tVoltage\tCurrent")
for i=1, smua.nvbuffer1.n do
print(string.format("%g\t%g\t%g",
smua.nvbuffer1.timestamps[i],
smua.nvbuffer2[i],
smua.nvbuffer1[i]))
end
end
