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Rotate the Trigger LEVEL knob to adjust the corresponding trigger level. During
the adjustment of trigger level, two trigger level lines appear on the screen, and they
move up and down with the change of the trigger level. At the same time, the real-
time trigger level information is displayed at the lower-left corner of the screen (As
shown in the figure below, H indicates the upper limit of the trigger level, L indicates
the lower limit of the trigger level, and â–³ indicates the trigger level deviation). When
you stopping modifying the trigger level, the trigger level line and the trigger level
information at the lower-left corner of the screen disappear in about 2 s. The current
trigger level deviation is displayed at the upper-right corner of the screen.
Trigger Mode:
In the trigger control area (Trigger) on the front panel, press to quickly switch
the current trigger mode. For details, refer to descriptions in "
Trigger Mode
".
Trigger Parameter Setting:
Sets the trigger parameters (trigger holdoff and noise rejection) under this trigger
type. For details, refer to descriptions in "
Trigger Holdoff
" and "
Noise Rejection
".
8.7.9 Window Trigger
Window trigger provides a high trigger level and a low trigger level. The instrument
triggers when the input signal passes through the high trigger level or the low trigger
level.
Trigger Type:
Press
Type, and then rotate the multifunction knob to select "Window". 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.
Source Selection:
Press Source to switch the trigger source and select CH1-CH4. For details, refer to
descriptions in "
Trigger Source
". The current 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 trigger source, can
we obtain a stable trigger.
To Trigger the Oscilloscope
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