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Trigger LEVEL/Threshold Level:
Rotate the Trigger LEVEL knob to adjust the trigger level/ threshold level. Please
refer to descriptions in "
Trigger LEVEL/Threshold Level
". The current trigger level/
threshold level is displayed at the upper-right corner of the screen.
8.7.11 Setup/Hold Trigger
In setup&hold trigger, you need to set the clock source and data source. The setup
time starts when the data signal passes the trigger level and ends at the coming of
the specified clock edge; the hold time starts at the coming of the specified clock
edge and ends when the data signal crosses the trigger level again, as shown in the
figure below. The oscilloscope triggers when the setup time or hold time is smaller
than the preset time.
T1
T2
Data Source
Clock Source
T2 is the hold time
T1 is the setup time
Edage
The data type is H
Figure 8.11 Setup/Hold Trigger
Trigger Type:
Press Type, and then rotate the multifunction knob to select "Setup/Hold". Press
down the knob to select the trigger type. Then, the current trigger setting information
is displayed at the upper-right corner of the screen, as shown in the figure below. You
can also press
Type continuously or enable the touch screen to select it.
Clock Source:
Press SCL to set the signal source of the clock line. It can be set to CH1-CH4 or D0-
D15. For details, refer to descriptions in "
Trigger Source
". The current clock source
(trigger source) is displayed at the upper-right corner of the screen.
NOTE
Only when we select the channel (that has been input with signals) as the clock source, can we
obtain a stable trigger.
To Trigger the Oscilloscope
106
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