List Sweep Program - Keithley 2520 User Manual

Model 2520 User's Manual

List sweep program

The program listing below performs a list (custom) sweep as covered in
program sets up the following operating modes:
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' Laser diode custom sweep program.
' 2520 primary address = 25.
OPEN "IEEE" FOR OUTPUT AS #1
OPEN "IEEE" FOR INPUT AS #2
PRINT #1, "INTERM CRLF"
PRINT #1, "OUTTERM LF"
PRINT #1, "REMOTE 25"
PRINT #1, "OUTPUT 25;*RST"
PRINT #1, "OUTPUT 25;:FORM:ELEM VOLT1,CURR2,CURR3"
PRINT #1, "OUTPUT 25;:SOUR1:CURR:MODE LIST"
PRINT #1, "OUTPUT 25;:SOUR1:LIST:CURR 0.2,0.1,0.4,0.3,0.5" ' I list.
PRINT #1, "OUTPUT 25;:SOUR1:LIST:DEL 7e-3,4e-3,2e-3,8e-3,1e-3" ' D list.
PRINT #1, "OUTPUT 25;:SOUR1:LIST:WIDT 10e-6,50e-6,35e-6,20e-6,60e-6"
PRINT #1, "OUTPUT 25;:SOUR2:VOLT 5"
PRINT #1, "OUTPUT 25;:SOUR3:VOLT 5"
PRINT #1, "OUTPUT 25;:OUTP1 ON"
CLS
PRINT #1, "OUTPUT 25;:READ?"
PRINT #1, "ENTER 25"
LINE INPUT #2, R$
PRINT "Custom sweep data: "; R$
PRINT #1, "OUTPUT 25;:OUTP1 OFF"
END
Source mode: list sweep
Source current range: 500mA
Current list points: 200mA, 100mA, 400mA, 300mA, 500mA
Pulse delay points: 7ms, 4ms, 2ms, 8ms, 1ms
Pulse width points: 10µs, 50µs, 35µs, 20µs, 60µs
Detector bias voltages: 5V
Example Programs
' Open IEEE-488 output path.
' Open IEEE-488 input path.
' Set input terminator.
' Set output terminator.
' Put 2520 in remote.
' Restore GPIB defaults.
' Voltage/current data.
' Custom sweep mode.
' Detector 1 bias = 5V.
' Detector 2 bias = 5V.
' Turn on outputs.
' Trigger sweep and read data.
' Address 2520 to talk.
' Input sweep data.
' Turn off outputs.
H-5
Section 7. This