Keithley Series 2600 Application Manual page 65

APPenDIx A
Scripts
------------------ Keithley TSP Function ------------------
function Diode_Fwd_Char_Log(ilevel, start, stop, points) --CConfigure instrument to source
a bias
--current, and perform a logarithmic current sweep from start to stop in a user-defined
number of points per decade.
--Returns measured voltage and current values.
--Global variables
local l_irange = 100E-2 --Current source range
local l_ilevel = ilevel --Initial source value
local l_vcmpl = 6 --Source compliance
--Shared local variables
local l_nplc = 1 --Integration rate of measurement
--Local sweep variables
local l_start = start --Sweep start current
local l_stop =
local l_points = points --Number of steps in sweep
local l_delay = 0.01 --Source delay
--Default values and level check
if (l_ilevel == nil) then --Use default value
l_ilevel = 0
end --if
if (l_ilevel > 0.1) then --Coerce value
l_ilevel = 0.1
end --if
if (l_start == nil) then --Use default value
l_start = 1E-6
end --if
if (l_start > 1) then --Coerce value
l_start = 1
end --if
if (l_stop == nil) then --Use default value
l_stop = 1E-2
end --if
if (l_stop > 1) then --Coerce value
l_stop = 1
end --if
if (l_points == nil) then --Use default value
l_points = 10
A-12
stop --Sweep stop current