Edge Triggering - UNI-T UTD2000M Operating Manual

UTD2000M User Manual
to acquire signal baseline so as to confirm whether the acquisition is normal;
After pressing SINGLE key to set single trigger, FORCE (force trigger) key can be pressed to execute
experimental acquisition so as to check the control settings.
Trigger Control MENU
Trigger Type: Edge, Pulse width, video, slope, less amplitude pulse, alternative
Edge Triggering: Trigger occurs when the edge of a triggering signal reaches a given level.
Pulse Width Triggering: Trigger occurs when the pulse width of a triggering signal reaches a preset triggering
condition.
Video Triggering: Perform field triggering or row triggering to standard video signal.
Slope Triggering: Trigger occurs when the slope of triggering signal meets the condition.
Less Amplitude Pulse Triggering: Trigger the pulse signal that has passed one trigger level but has failed to pass
another one.
Alternative Triggering: Trigger signals that has no frequency connections.
2.4.1 Edge Triggering
Edge triggering refers to a trigger that occurs at the edge of an input signal, namely the trigger threshold value.
When "edge triggering" is selected, it means the trigger occurs at the rising edge and falling edge of an input
signal.
Table 2‐8 Edge Triggering
Menu
Type
Signal Source
Trigger Coupling
Triggering Mode
Setting
Edge
CH1、CH2
EXT、EXT/5
AC LINE
Alter
DC
AC
Low Frequency Reject
High Frequency Reject
Auto
Normal
Description
Set CH1 or CH2 as the source of trigging signal
Set external triggering or the quotient of dividing external
triggering signal by 5 as the signal source
Set mains supply as the source of trigger
Alternatively use CH1 or CH2 as the source of trigger
Pass both the AC and DC component in an input signal;
Block the DC component in an input signal;
Reject the low frequency component (less than 80KHz) contained
in a signal;
Reject the high frequency component (higher than 80KHz)
contained in a signal;
When there is no input of trigger signal, the system will
automatically acquire waveform data and display scanning
baseline on the screen; when there is a trigger signal, it will then
automatically switch into trigger scanning.
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