Pattern Trigger - UNI-T UPO2102 User Manual

Digital phosphor oscilloscope
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b.
Falling edge: Set to trigger on the falling edge of the signal.
(2) Idle Time
Compare the idle time with pulse time, it will be triggered when the condition is met. The range can be
set 8ns ~ 10s.
(3) Edge Count
The number of edge means that the pulse string is triggered at which edge. The edge value can be
set by using multipurpose knob, jog dial and numeric keypad. The edge value range can be set 1 to
65535.

7.13 Pattern Trigger

The pattern trigger identifies the trigger condition by looking for the specified patterns. The pattern trigger
type is the combination of the channel logic "AND", each channel can be set to H (high), L (low), X (ignored).
You can also specify a channel in the type as a rising edge or falling edge (only one edge can be specified).
When the edge is assigned, if the pattern of the other channels are judged "true" (i.e., the actual pattern is
consistent with the preset pattern type), the oscilloscope will trigger on the specified edge. If the edge is not
assigned, the oscilloscope will trigger at the last edge of the code type "true". If the pattern of all channels
are set to "ignore", the oscilloscope will not be triggered.
(1)
Pattern
There are H, L, X, rising edge, or falling edge. The pattern setting of each channel is displayed at the
bottom of the screen.
a.
H:Set the pattern value of the selected channel to "High", that is, the voltage level is higher than
the trigger level of the channel.
b.
L:Set the pattern value of the selected channel to "Low", that is, the voltage level is lower than the
trigger level of the channel.
c.
X:Set the pattern value of the selected channel to "Ignored", that is, the channel is not part of the
pattern. The oscilloscope will not be triggered if all channels in the pattern are set to "ignored".
d.
Rising edge: Set the pattern to the rising edge of the selected channel.
e.
Falling edge: Set the pattern to the falling edge of the selected channel.
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