Limit Testing; Table 10; Command Sequence For Buffer Example; Limit Test Display Messages - Keithley 6514 Quick Manual

16 Model 6514 Quick Results Guide
Programming example
Table 10 shows a typical command sequence to store and recall readings and mean buffer
statistics.

Table 10

Command sequence for buffer example

Command*
:TRAC:POIN 20
:TRAC:FEED SENS
:TRAC:FEED:CONT NEXT
:TRAC:DATA?
:CALC3:FORM MEAN
:CALC3:DATA?
*Model 6514 must be addressed to talk after sending :TRAC:DATA? and :CALC3:DATA? to acquire data.

Limit testing

Limit operations set and control the values that determine the pass/fail status of
subsequent measurements. The limit test is performed on the result of an enabled Rel,
mX+b, or Percent operation.
There are two sets of limit tests, Limit 1 and Limit 2. Both limits use high and low values.
Factory defaults for both limit tests are +1 (high) and -1 (low). Table 11 lists limit test
display messages depending on pass/fail status.
NOTE This guide contains basic information on limit testing. See
Section 10 of the Model 6514 Instruction Manual for complete
details on limit testing, including information on binning and using
a component handler.
Table 11

Limit test display messages

Display
Message
:OK
:L1
:L2
Comments
Set buffer size to 20,
Set to store raw readings.
Start storing readings.
Request all stored readings.*
Select mean calculation.
Perform calculation and request result.*
Limit 1 Limit 2
Test Result Test Result
Pass Pass
Fail Not Performed
Pass Fail