Using The Analog Outputs (Model 2502 Only); Table 3-7 Basic Measurement Command Sequence - Keithley 2500 User Manual

3-14 Basic Operation
Table 3-7
Basic measurement command sequence
1
Step Action
1 Select channel 2 measure range.
Select channel 2 current reading.
2 Set channel 2 source range.
Set channel 2 source amplitude.
3 Turn on channel 2 output.
4 Read data.
5 Turn off channel 2 output.
1
Steps correspond to front panel steps previously in
2
Commands must be sent in order given.
3
Instrument must be addressed to talk after :READ? to acquire data.

Using the analog outputs (Model 2502 only)

Each analog output provides a -10V to +10V DC output analogous to the input current.
The analog output signal will nominally source a ±10V proportional, but inverted, signal
to the input current on all measurement ranges. For example, with a +1mA current on the
2mA measurement range, the analog output voltage would be -5V.
analog output voltages for various ranges and input currents.
Table 3-8
Analog output voltage examples
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*RST
:SENS2:CURR:RANG 2e-6
:FORM:ELEM CURR2
:SOUR2:VOLT:RANG 10
:SOUR2:VOLT 10
:OUTP2 ON
:READ?
:OUTP2 OFF
"Front panel measurement procedure."
Range Input Current
20nA +10nA
2µA -2µA
20µA +7µA
2mA +0.5mA
20mA -15mA
Models 2500 and 2502 User's Manual
2,3
Commands
Restore GPIB defaults.
Select 2µA range.
Return channel 2 reading.
Select 10V source range.
Source 2 output = 10V.
Output on before measuring.
Trigger, acquire reading.
Output off after measuring.
Analog Output
-5V
+10V
-3.5V
-2.5V
+7.5V
Comments
Table 3-8 list typical