Triggering the Oscilloscope 4
6000 Series Oscilloscope User’s Guide 177
1Press 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
2Press the Find: softkey and select the Find stage condition.
3To 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.
4If you select a pattern term, each channel in the pattern must
be set to a H(high), L(low), or X(don't care).
aPress 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”
bPress 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.