Keithley SourceMeter 2600 Series Reference Manual page 570

E-6 Speed Specification Test Conditions
Result = NumPoints/ (tstop – start) ' NumPoints is the number of samples taken
Measure to GPIB
This test is similar to Measure to Memory. Instead of storing data to a buffer,
data is returned to the test program one at a time. It also sets the return data for-
mat to SREAL instead of ASCII. The command printnumber() returns the data.
The following shows how the results are obtained in Visual Basic. TestScript() is
the setup script.
tstart = Timer
TransmitBuffer = "TestScript()" & CRLF
VisaStatus = viWrite(VisaSession, TransmitBuffer, Len(TransmitBuffer), ReturnCount)
For i = 1 To NumPoints' Number of samples to take
VisaStatus = viRead(VisaSession, ReceiveBuffer, MAX_BUFFER, ReturnCount)
Next i
tstop = Timer
Result = NumPoints/ (tstop – start) ' NumPoints is the number of samples taken
Source Measure to Memory
The setup for this test is similar to Measure to Memory.
The smua.measurevandstep(Levelv) function is used instead of
smua.measure.v() (refer to command documentation in Section 12). Levelv
increments throughout the test. Data is stored to an array created in Lua.
Source Measure to GPIB
The setup for this test is similar to Measure to GPIB except the
smua.measurevandstep(Levelv) function is used instead of smua.measure.v().
Levelv increments throughout the test.
Source Measure Pass/Fail to Memory
This test is similar to the Source Measure to Memory test, and it 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 a threshold or not.
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 a threshold or not.
2600S-901-01 Rev. A / May 2006
Series 2600 System SourceMeters Reference Manual
Return to Appendix E topics