Agilent Technologies 54621A, User Manual

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Triggering the Oscilloscope
To use Duration triggering
5 Select a qualifier time set softkey ( < or > ), then rotate the Entry knob to
set the duration qualifier time.
< qualifier time set softkey
• When the less than (
<
) qualifier is selected, the Entry knob sets the
oscilloscope to trigger on a pattern duration less than the time value
displayed on the softkey.
• When the within time range (
><
) qualifier is selected, the Entry knob sets
the upper time range value.
• When the out of time range ( <> ) qualifier is selected, the Entry knob sets
the lower time range value.
> qualifier time set softkey
• When the greater than ( > ) qualifier is selected, the Entry knob sets the
oscilloscope to trigger on a pattern duration greater than the time value
displayed on the softkey.
• When the within time range ( >< ) qualifier is selected, the Entry knob sets
the lower time range value.
• When the out of time range (
<>
) qualifier is selected, the Entry knob sets
the upper time range value.
• When Timeout qualifier is selected, the Entry knob sets the timeout value.
When the duration trigger occurs
The timer starts on the last edge that makes the pattern (logical AND) true. The
trigger will occur on the first edge that makes the pattern false if the time qualifier
criteria of the pattern has been met, except in Timeout mode. In Timeout, the trigger
occurs when the timeout value is reached while the pattern is true.