174 6000 Series Oscilloscope User’s Guide
4 Triggering the Oscilloscope
Define the Find: stage
1 Press the Stage softkey and select Find:.
Find: is the first stage in the trigger sequence. When you select
the Stage Find softkey, the next softkey to the right will
display Find: and give you a list of the terms you can define
for the Find stage. The Find stage can be set to one of the
following conditions:
• Pattern 1 Entered — A pattern is entered on the last edge that
makes the pattern true (logical AND).
• Pattern 1 Exited — A pattern is exited on the first edge that
makes the pattern false (logical NAND).
• Edge 1
• Pattern 1 and Edge 1
2 Press the Find: softkey and select the Find stage condition.
3 To define the term(s) used in the Find stage, press the Ter m
softkey and select the pattern and/or edge term displayed in
the Find: softkey.
4 If you select a pattern term, each channel in the pattern must
be set to a H (high), L (low), or X (don't care).
a Press the Channel softkey (or rotate the Entry knob on
mixed-signal oscilloscopes) to select the channel.
As you select a channel, the channel is highlighted in the
selected pattern list shown in the waveform area and is
also shown in the upper-right corner of the display next to
“Seq”
b Press the L H X softkey to set a level for the channel.
• 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.
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