Section 7: Triggering
Model 6517B Electrometer Reference Manual
7-16
6517B-901-01 Rev. C / August 2015
CONTROL
Use this menu item to enable or disable the source bypass. The source bypass is used to bypass the
arm event on the first pass through the arm layer.
SOURCE: With this selection, the source bypass is enabled. The arm event is bypassed on the first
pass through the arm layer. This allows operation to proceed into the scan layer without having to
wait for the programmed event.
ACCEPTOR: With this selection, the source bypass is disabled.
Continuous initiation
The INIT item of the ADVANCED TRIGGERING menu is used to enable or disable continuous
initiation.
ON: Use this option to enable continuous initiation. The instrument does not go into idle when all
trigger model operations are done. Operation does instead start over from the top of the advanced
trigger model.
OFF: Use this option to disable continuous initiation. After all advanced trigger model operations are
done, the instrument goes into idle.
Halting triggers
The HALT option of the ADVANCED TRIGGERING menu is used to disarm the instrument and place
it in the idle state. You can press the
TRIG
key to resume front panel triggers. Enabling (ON)
continuous initiation also takes the instrument out of idle.
External triggering
The Model 6517B has enhanced external triggering capabilities using the trigger link. In general,
trigger link input triggers to the Model 6517B are used to control the measure operation. For the
Model 6517B to respond to trigger link compatible triggers, the appropriate layers of the trigger model
must be programmed for it. For example, if you want trigger link input triggers to control the
measuring process, you must program measure source for TRIGLINK trigger events. Typically, a
trigger link output trigger from the Model 6517B would be used to trigger a scanner to close the next
channel.
There are two modes of operation for trigger link: asynchronous and semi-synchronous. In the
asynchronous mode, separate lines are used for input and output triggers; in the semi-synchronous
mode, the same line is used for both input and output triggers.
