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Ratio and Delta 5-17

Delta programming example — The following program fragment uses a SourceMeter (SM)

with the Model 2182 to perform Delta measurements. External triggering (via Trigger Link) is

used to synchronize the source-measure operations between the two instruments. Also, Front

Autozero is disabled to double the speed of Delta.

Three Delta measurements will be performed; one at a source value of 10µA, one at 20µA,

and one at 50µA. The three readings will be stored in the buffer of the Model 2182.

CALL SEND (7, “:syst:pres”, status%) ‘ 2182 - System preset

‘ defaults.

CALL SEND (7, “:trig:del 1”, status%) ‘ 2182 - 1sec delay.

CALL SEND (7, “:sens:volt:delta on”, status%) ‘ 2182 - Enable Delta.

CALL SEND (7, “:syst:faz off”, status%) ‘ Disable Front Autozero to

‘ double Delta speed.

CALL SEND (7, “:trig:sour ext”, status%) ‘ 2182 - External triggering.

CALL SEND (7, “:trac:poin 3”, status%) ‘ 2182 - Buffer size 3.

CALL SEND (7, “:trac:feed:cont next”, status%) ‘ 2182 - Enable buffer.

CALL SEND (24, “*rst”, status%) ‘ SM - RST defaults.

CALL SEND (24, “:trig:sour tlin”, status%) ‘ SM - Select trigger link.

CALL SEND (24, “:trig:dir sour”, status%) ‘ SM - Enable source bypass.

CALL SEND (24, “:trig:outp sour, status%) ‘ SM - Output trigger after

‘ source.

CALL SEND (24, “:trig:coun 6”, status%) ‘ SM - Trig count 6.

CALL SEND (24, “:sour:func curr”, status%) ‘ SM - Source current.

CALL SEND (24, “:func ‘volt’”, status%) ‘ SM - Measure voltage

CALL SEND (24, “:volt:nplc 0.01, status%) ‘ SM - Fast measurements

CALL SEND (24, “:sour:list:curr 10e-6, -10e-6,

20e-6, -20e-6, 50e-6, -50e-6”,status%) ‘ SM - Current list values

CALL SEND (24, “:outp on”, status%) ‘ SM - Turn output on.

CALL SEND (24, “:sour:curr:mode list”, status%)‘ SM - Enable list mode.

CALL SEND (24, “:init”, status%) ‘ SM - Start sweep.

Keithley 2182 User Manual

Other manuals for Keithley 2182