Trigger Setup
Trigger Type Trigger Conditions
Runt Trigger on a pulse amplitude that crosses one threshold
but fa ils to cross a second threshold before recrossing the
first. You can detect positive or negative (or e ither) runts, or
only those w ider than, less than, greater than, equal to, or
not equal to a specified width . Runt triggers are primarily
used on digital signals.
Logic
Trigger when all channels transition to the specified state.
Use multipurpose knob a to select a channel. Push the
appropriate side-bezel button to set that channel’s sta te to
High (H), Low (L),orDon’t Care (X).
Use the Clock side-bezel button to enable clocke d (state)
triggering. You can have at most a single clock channel.
Push the Clock E dge bottom bezel button to change the
polarity of the clock edge. Turn off clocked triggering and
return to unclocked (patt ern) triggering by selecting the
clock chan nel and setting it to high, low, or don’t care.
For unclocked triggering, by default, triggering occurs when
the selected condition goes true. You can also select
triggering when the condition goes false, or time-qualified
triggering.
118 DPO3000 Series Oscilloscopes User Ma nual
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