Setup/Hold Trigger - UNI-T UPO2102 User Manual

User's Manual
pattern. The oscilloscope will not trigger if all channels in the codes are set to "ignored".
(2) Trigger condition
a. >：It will be generated when the pattern duration is greater than the setting time, it can set the
lower limit of time.
b. <：It will be generated when the pattern duration is small than the setting time, it can set the
upper limit of time.
c. ≤≥：It will be generated when the pattern duration is small than the setting upper time limit and
greater and equal than the setting lower time limit, it can set the upper limit and the lower limit of
time.
(3) The upper/lower limit of time
Compare the duration time with the setting time of △T, it will be triggered when the condition is met.
The range can be set to 8ns ~ 10s.

7.11 Setup/Hold Trigger

In setup/hold trigger, the oscilloscope need to set up the data signal line and clock signal line. The setup time
begins when the data signal crosses the trigger level and ends when the specified clock edge arrives. The
hold time begins when the specified clock edge arrives and ends when the data signal crosses the trigger
level again (as shown in Figure 7-9). The oscilloscope will trigger when the setup time or the hold time is less
than the preset time. It is mainly used to locate and find error code, and quickly find the signal that cannot
meet setup hold time.
Data source
Clock source
(1) Pattern setting
It has two modes H and L.
a. H：Set the valid pattern of the data signal to high level.
b. L：Set the valid pattern of the data signal to low level.
 Instruments.uni-trend.com
△T1
Data pattern：H
Edge type：rising edge
Figure 7-9
△T2
△T1 setup time
△T2 hold time
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