Keithley Series 2600 User Manual

A-55
APPENDIX A
Scripts
l_comp_val = Check_Comp() --check compliance
if l_comp_val == true then --If unit is in compliance, end
smua.source.output = smua.OUTPUT_OFF --Disable output
smub.source.output = smub.OUTPUT_OFF --Disable output
smua.source.levelv = 0 --Return source to 0
smub.source.levelv = 0 --Return source to 0
else
l_id_meas = smua.measure.i() --Measure Id
if (l_target_id < l_id_meas) then --Compare measurement with
target value
l_high_vgs = l_vgs_source
else
l_low_vgs = l_vgs_source
end --end if
end --ifelse
if l_id_meas == nil then --If no measurement taken, initialize to 0 to avoid
arithmatic error
--in until statement below
l_id_meas = 0
end --if
until ((math.abs(l_id_meas - l_target_id) < (0.05*l_target_id))or(l_k>l_k_max))
or(l_comp_val == true) --
--iteration limit reached
if (l_k > l_k_max) then
print(“Iteration Limit Reached!!”)
end --end if
smua.source.output = smua.OUTPUT_OFF --Disable output
smub.source.output = smub.OUTPUT_OFF --Disable output
print(“Id Data:”, l_id_meas) --Print Id data
print(“Vgs Data:”, l_vgs_source) --Print Vgs
print(“Vds Data:”,l_vds_source) --Print Vds
end --ifelse
end--function FET_Thres_Search()
function Check_Comp() --Function checks state of compliance, if true, prints warning and
returns
--to run_test()

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)