Keithley Series 2600 User Manual

A-59
APPENDIX A
Scripts
--Execute sweep
for l_i = 1, l_isteps do
smub.source.leveli = l_isource_val
delay(0.01)
l_thres_volt[l_i] = smub.measure.v() --Measure threshold voltage (Vt)
l_drain_curr[l_i] = smua.measure.i() --Measure drain current
l_isource_val = l_isource_val + l_istep --Calculate new source value
end--for
smua.source.output = smua.OUTPUT_OFF --Disable output
smub.source.output = smub.OUTPUT_OFF --Disable output
smua.source.levelv = 0 --Return source to bias level
smub.source.leveli = 0 --Return source to bias level
Print_Data(l_isteps, l_drain_curr, l_thres_volt, l_vds_source)
end--function DC_Gain_Fast()
function Print_Data(isteps, drain_curr, thres_volt, vdssource)
--Print Data to output queue
--Local Variables
local l_isteps = isteps
local l_i = 1 --Iteration variable
local l_drain_curr = drain_curr --Drain current table
local l_thres_volt = thres_volt --Threshold voltage table
local l_vds_source = vdssource --Drain-source voltage value
print(“”)
print(“Drain-source Voltage (V)”)
print(math.abs(l_vds_source))
print(“”)
print(“Threshold Voltage (V)”, “Drain Current (A)”)
for l_i = 1, l_isteps do
print(math.abs(l_thres_volt[l_i]), math.abs(l_drain_curr[l_i]))
end --for
end --function Print_Data()
--FET_Thres_Fast()

Keithley Series 2600 Specifications

General

Model	Series 2600
Measurement Functions	Voltage, Current, Resistance, Power
Resolution	Up to 6.5 digits
Current Source Range	Up to 10A
Communication Interfaces	GPIB, USB
Applications	Semiconductor testing
Category	Source Measure Unit (SMU)
Channels	Single or Dual Channel (varies by model)