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Models 2500 and 2502 User’s Manual SCPI Command Reference 17-91

Program trigger model

COUNt <n>

:ARM[:SEQuence[1]][LAYer[1]]:COUNt <n> Set arm count

:TRIGger[:SEQuence[1]]:COUNt <n> Set trigger count

Parameters <n> = 1 to 3000 Specify count (see NOTE)

DEFault Sets count to 1

MINimum Sets count to 1

MAXimum See NOTE

INFinite (ARM:COUNt only)

NOTE The product of arm count and trigger count cannot exceed 3000.

Query :COUNt? Queries programmed count

:COUNt? DEFault Queries *RST default count

:COUNt? MINimum Queries lowest allowable count

:COUNt? MAXimum Queries largest allowable count

Description This command is used to specify how many times an operation is per-

formed in the speciﬁed layer of the trigger model.

For example, assume the arm count is set to 2 and the trigger counter is

set to 10, the Model 2500 is conﬁgured to perform 10 source-measure

operations twice for a total of 20 source-measure operations.

The product of the arm count and trigger count cannot exceed 3000. If,

for example, the arm count is 2, then the maximum trigger count is

1250.

NOTE INFinite can be used only with ARM:COUNt, and FETCh?. READ?, MEAS?,

CALC1:DATA? through CALC7:DATA? cannot be used with inﬁnite arm count.

Only INIT will start measurements, and only interlock, over-temperature, SDC,

DCL, or ABORt should be used to stop the sweep.

ARM:COUNt INFinite can be used for repetitive source waveforms or

for long tests where only the last reading is important. For example, the

limits could be used to drive the interlock to abort a test when some con-

dition is met. :DATA? would then give the answer to the test.

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Keithley 2500 User Manual

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