Triggering 4
InfiniiVision Oscilloscopes User’s Guide 141
When triggering on a positive pulse, the trigger will occur on the high to low transition
of the pulse if the qualifying condition is true. When triggering on a negative pulse, the
trigger will occur on the low to high transition of the pulse if the qualifying condition is
true.
4 Press the qualifier softkey (< > ><) to select the time qualifier.
The Qualifier softkey can set the oscilloscope to trigger on a pulse width that is:
• less than a time value (<).
For example, for a positive pulse, if you set t<10 ns:
• greater than a time value (>).
For example, for a positive pulse, if you set t>10 ns:
• within a range of time values (><).
For example, for a positive pulse, if you set t>10 ns and t<15 ns:
5 Select the qualifier time set softkey (< or >), then rotate the Entry knob to set the
pulse width qualifier time.
The qualifiers can be set as follows:
• 2 ns to 10 s for > or < qualifier (5 ns to 10 s for 350 MHz bandwidth models)
• 10 ns to 10 s for >< qualifier, with minimum difference of 5 ns between upper and
lower settings
< qualifier time set softkey
• When the less than (<) qualifier is selected, the Entry knob sets the oscilloscope to
trigger on a pulse width less than the time value displayed on the softkey.
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