How To Set Trigger System; Single Trigger - Owon PDS8102T User Manual

User Manual of OWON Color Mixed Signal Digital Storage Oscilloscope

How to set trigger system

Trigger is to determine when DSO starts to acquire data and waveform display. Once
trigger to be set correctly then it will convert the unstable display to meaning
waveform.
When DSO start to acquire data it will acquire enough data to form waveform on left
of trigger point. DSO continues to acquire data when it waits for trigger condition
happen. Once it detect out the trigger it will acquire enough data continuously to
form the waveform on right of trigger point.
Trigger control area include 1 knob and 4 menu keys.
Trigger level: trigger level knob to set signal voltage correspond to trigger point.
SET 50%: set trigger level in middle vertical point of trigger signal voltage range,
this setting is disable at the FFT mode.
FORCE TRIG: Force to a trigger signal and mainly to use in "Normal" and
"Single" mode.
SET TO ZERO: Trigger horizontal position set to Zero.
Trig MENU: Press this key and panel display menu.
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:

Single trigger

Single trigger has four modes: edge trigger, video trigger, pulse triggger and slope
trigger .
It happens when a specified
Edge Trigger:
specified slope direction.
Video Trigger: Carry out field or line video trigger on the standard video signal.
Use this trigger type to catch pulses with certain pulse width..
Pulse Trigger :
Slope Trigger : The oscilloscope begins to trigger according to the signal rising or falling
speed.
The four trigger modes in Single Trigger are described respectively as follows:
Edge Trigger
An edge trigger occurs on trigger threshold value of input signal . Select Edge trigger
Mode to trigger on Rising edge, falling edge or rising & falling edge
The Edge Trigger Menu is shown as Fig.5-19
passes through the trigger input
voltage level
36
in the