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42
October 2014
3.3
How to Set the Trigger System
When the oscilloscope begins to collect the data and display the wave form
depends on a trigger. Once it is set correctly, the trigger can transfer the unstable
display into a meaningful wave form.
When beginning to collect data, the oscilloscope will collect adequate data to
draw the wave form at the left side of the trigger point at first. It will
continuously perform the data acquisition while waiting for the trigger condition.
After a trigger is detected, the oscilloscope will continuously collect data enough
to draw the wave form at the right side of the trigger point.
One knob and four function menu buttons are included in the trigger control
zone.
TRIG LEVEL
: Trigger the level control knob and set the signal voltage
corresponding to the trigger point.
SET TO 50%
: Set the trigger level as the vertical mid point value of
the amplitude of the trigger signal.
FORCE TRIG
: It is a force trigger button for the generation of a trigger
signal, which is mainly used in the "Normal" and "Single" triggering
modes.
SET TO ZERO
: Trigger the resetting of the horizontal position.
TRIG MENU
: It is a trigger menu button. When it is pressed, an
operation menu will be presented in the screen.
►
Trigger Control
The oscilloscope provides two trigger types: single trigger and alternate
trigger. Press F1 to choose.
Single trigger
: Use a trigger level to capture stable waveforms in two
channels simultaneously.
Alternate trigger:
Trigger on non-synchronized signals.
The
Single Trigger
and
Alternate Trigger
menus are described respectively as
follows:
