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Triggering the Oscilloscope
To use Pattern triggering
3 For each channel you select, press one of the condition softkeys to set
the condition for that channel in the pattern.
• H sets the pattern to high on the selected channel. A high is a voltage level
that is greater than the channel's trigger level or threshold level.
• L sets the pattern to low on the selected channel. A low is a voltage level that
is less than the channel's trigger level or threshold level.
• X sets the pattern to don't care on the selected channel. Any channel set to
don't care is ignored and is not used as part of the pattern. If all channels in
the pattern are set to don't care, the oscilloscope will not trigger.
• The rising edge ( ) or falling edge ( ) falling edge softkey sets the pattern
to an edge on the selected channel. Only one rising or falling edge can be
specified in the pattern. When an edge is specified, the oscilloscope will
trigger at the edge specified if the pattern set for the other channels is true.
If no edge is specified, the oscilloscope will trigger on the last edge that makes
the pattern true.
Specifying an Edge in a Pattern
You are allowed to specify only one rising or falling edge term in the pattern. If
you define an edge term, then select a different channel in the pattern and define
another edge term, the previous edge definition is changed to a don’t care.