Setting The Trigger System - UNI-T UTD4000 Series User Manual

Setting the Trigger System

Triggering decides when the oscilloscope collects
data and display waveforms. Once the trigger is
correctly set up, it can transform unstable displays
into meaningful waveforms. When beginning
,
acquire data the digital storage oscilloscope first
collects sufficient data required for drawing a
waveform on the left side of the trigger point
When trigger is detected
sufficient data to draw a waveform on the right
.
side of the trigger point
The trigger control zone on the operation panel of
your oscilloscope comprises a trigger
[ ]
and a trigger MENU button
Trigger Control
Trigger modes : Edge, Pulse , Video and Slope rate.
Edge trigger : Trigger is set to occur when the signal
is at the rising or falling edge. You can use the trigger
40
,
it continuously acquires
LEVEL knob
.
UTD4000 Four-channel User Manual
LEVEL knob to change the trigger point s vertical
position on the trigger edge, i.e. the intersection point
of the trigger level line and the signal edge on the
screen.
Pulse width trigger :
to
trigger signal reaches a preset trigger condition
.
trigger occurs
Video trigger: Carry out field or line trigger to
.
standard video signals.
Slope trigger: Trigger condition is the signal rising
or falling rate.
Below are notes for various trigger menus.
Edge Trigger
For edge trigger menu setups please see Table
.
2-10
'
When the pulse width of the
,