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After the trigger condition setting is completed, you need to adjust the trigger level
to correctly trigger the signal and obtain a stable waveform. Press Level Select (when
"<>" is selected as the trigger condition, Level Select is a sub-menu under More),
then rotate the multifunction knob to select the desired level type for adjustment,
and then press down the knob to select the type. You can also press Level Select
continuously or enable the touch screen to select it.
• Level A: only adjusts the upper limit of the trigger level, and the lower limit of
the trigger level remains unchanged.
• Level B: only adjusts the lower limit of the trigger level, and the upper limit of the
trigger level remains unchanged.
• Level AB: adjusts the upper and lower limits of the trigger level at the same time,
and the trigger level deviation (the difference between the upper limit and lower
limit of the trigger level) remains unchanged.
NOTE
In Slope trigger, pressing Trigger LEVEL can quickly switch the current level adjustment
type.
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
".
To Trigger the Oscilloscope
88
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