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Model 6517B Electrometer Reference Manual
Control sources
With the one-shot trigger mode selected, a measurement (device action) does not occur until the
selected control source event is detected. The control sources are explained as follows:
Immediate: With this control source selected, event detection is immediately satisfied allowing operation
to continue. Using this selection is effectively the same as using the continuous trigger mode.
Manual: Event detection is satisfied by pressing the TRIG key. Note that the Model 6517B must be
taken out of remote before it responds to the TRIG key. Pressing LOCAL takes the instrument out of
remote.
GPIB: Event detection is satisfied when a bus trigger (GET or *TRG) is received by the Model 6517B.
External: Event detection is satisfied when an input trigger through the EXTERNAL TRIGGER
connector is received by the Model 6517B.
Timer: Event detection is immediately satisfied on the initial pass through the layer. Each subsequent
detection is satisfied when the programmed timer interval (1 to 999999.999 seconds) elapses.
Output triggers
After every measurement (device action) a trigger pulse is applied to the trigger link connector on the
rear panel of the instrument. This out-going trigger pulse can be used to trigger another instrument to
perform an operation.
6517B-901-01 Rev. C / August 2015
Section 7: Triggering
7-5
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