How To Set Trigger System - Owon MSO5022 User Manual

User's 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.
Force trig: Force to a trigger signal and mainly to use in "Normal" and "Single"
mode.
SET Zero: Trigger horizontal position set to Zero.
Trig menu: Press this key and panel display menu refer to Fig. 32:
Trigger control
Edge trigger, Video trigger and alternate trigger. Press F1 to switch among different
triggers.
Edge: when trigger input follow up certain direction to specify level then edge trigger
happen.
Video: Take field/line trigger to video signal.
Alternate: Stabilize trigger un-synchronous signal.
Edge
Edge trigger is to trigger in the trigger voltage value of input signal edge. When
choose "Edge" trigger in rising or falling of input signal.
Edge menu refer to Fig.33
Fig. 32 Trigger mode menu
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