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In Range and Out of Range conditions can be further specified by setting:
Limits and assigning Upper and Lower Values to the range.
Delta and assigning Nominal width and Delta.
NOTE
: Width Condition settings are summarized on the far right of the dialog.
Holdoff by Time or Events
Holdoff is an additional condition of Edge and Pattern triggers. It can be
expressed either as a period of time or an event count. Holdoff disables the
trigger circuit for a given period of time or number of events after the last
trigger occurred. Events are the number of occasions on which the trigger
condition is met. The trigger resumes when the holdoff has elapsed and its
other conditions are met.
Use holdoff to obtain a stable trigger for repetitive, composite waveforms.
For example, if the number or duration of sub-signals is known you can
disable them by choosing an appropriate holdoff value. Qualified triggers
operate using conditions similar to holdoff.
H
O
T
OLD
FF BY
Sometimes you can achieve a stable display of complex, repetitive
waveforms by placing a condition on the time between each successive
trigger event. This time would otherwise be limited only by the input signal,
the coupling, and the instrument's bandwidth. Select a positive or negative
slope, and a minimum time between triggers. The trigger is generated when
the condition is met after the selected holdoff time, counted from the last
trigger. The delay is initialized and started on each trigger.
922561-00 Rev A
IME
Getting Started Manual
87
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