Keithley SourceMeter 2600 Series Reference Manual page 572

E-8 Speed Specification Test Conditions
Source Measure Pass/Fail to GPIB
The setup for this test is similar to Source Measure to GPIB and adds some
addition logic. Each measurement is compared to a value and a flag is set to 1 or
0 depending on whether the measurement is above the threshold or not.
Function/ Range Change Rates
The tests in this section have the following setup:
1.
2.
3.
4.
5.
6.
7.
8.
Source Range Change Rate
This test uses the previous setup to alternate between two source ranges.
The following shows how the results are obtained in Visual Basic. TestScript() is
the setup script.
tstart = Timer
TransmitBuffer = "TestScript()" & CRLF
ReceiveBuffer = ""
VisaStatus = viWrite(VisaSession, TransmitBuffer, Len(TransmitBuffer), ReturnCount)
VisaStatus = viRead(VisaSession, ReceiveBuffer, MAX_ BUFFER, ReturnCount)
tstop = Timer
Result = NumPoints/ (tstop – start) ' NumPoints is the number of samples taken
Measure Range Change Rate
This test method is the same as the Source Range Change Rate test, but this
one alternates between two measurement ranges.
Function Change Rate
This test method is the same as the Source Range Change Rate test, but this
one alternates between voltages and current.
2600S-901-01 Rev. A / May 2006
Set the source range to 1V, turning autorange off.
Measure range is set to 1V, turning autorange off.
Measurement filter is off.
Set the source function to volts.
The NPLC is set.
Turn output ON.
Range or function is altered.
Turn output OFF.
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Series 2600 System SourceMeters Reference Manual
Appendix E topics