HP 16533A, User Reference, Page: 80 / 152

Example
With a pattern specification of HXX, a duration specification of >60 ns and
<100 ns, and a count of 3; a pulse string with pulse widths 200 ns, 80 ns, 150
ns, 50 ns, 75 ns, 20 ns would trigger on the trailing edge of the 50 ns pulse. In
this example, the 80 ns pulse meets the duration specification and is count 1,
the 150 ns pulse is count 2, and the 50 ns pulse is count 3.
Count Field
In pattern trigger mode, you can define a pattern as a trigger qualifier. When
the oscilloscope detects the trigger qualifier, it will trigger when a
user-specified number of patterns have occurred (Count field) on all inputs.
The Count field defines the number of events that must occur after the first
trigger qualifier before the oscilloscope will trigger and acquire a waveform.
Count can be set to any integer from 1 to 32,000. When the Count field is
selected, the events count can be changed by turning the knob or by entering
a value from the pop-up keypad.
The default value for the Count field is 1.
The Trigger Menu
Count Field
6-16