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39
The Single Trigger and Alternate Trigger menus are described respectively as follows:
Single trigger
Single trigger has four modes: edge trigger, video trigger, pulse trigger and slope trigger .
Edge Trigger: It happens when the trigger input passes through a given level along the set
direction.
Video Trigger: Carry out field or line video trigger on the standard video signal.
Pulse Trigger : Use this trigger type to catch pulses with certain pulse width..
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
Under the Edge Trigger mode, a trigger happens in the trigger threshold value of the
input signal edge. When the Edge Trigger is selected, a trigger will occur in the
rising or falling edge of the input signal.
The Edge Trigger Menu is shown as Fig.5-19
Fig. 5-19 Edge trigger menu
Edge menu list:
MENU
SETTING
INSTRUCTION
Source
CH1
CH2
EXT
EXT/5
AC LINE
Channel 1 as the trigger source.
Channel 2 as the trigger source.
Use external source.
1/5 of the External Trigger Source for increasing range of level.
AC Line as resource trigger signal.
Mode
Edge
Set vertical channel trigger type for edge trigger.
Slope
Rising
Falling
Trigger on the rising edge.
Trigger on the falling edge.
Trigger
mode
Auto
Normal
Single
Acquire data and display waveform with or without a trigger.
Acquire data and display waveform when trigger.
Acquire data and display waveform when detecting a trigger
and stop sampling.
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