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5.Advanced User Guidebook
33
Coupling
AC
DC
HF
LF
Block the direct current component.
Allow all component pass.
Block the high-frequency signal, only low-frequency
component pass.
Block the low-frequency signal, only high-frequency
component pass.
Slope
Rising
Falling
Trigger on rising edge
Trigger on falling edge
Mode
Holdoff
Auto
Normal
Single
Holdoff
Reset
Acquire waveform even no trigger occurs
Acquire waveform when trigger occurs
When trigger occurs, acquire one waveform then stop
100ns~10s, turn the G
knob to set time interval before
another trigger occur.
Set Holdoff time as default value (100ns).
2. Video Trigger
Choose video trigger to trigger on fields or lines of NTSC, PAL or SECAM standard
video signals.
The description of the Video Trigger Menu is as follows:
MENU
SETTING
INSTRUCTION
Trigger
Mode
Video
Set vertical channel trigger type as video trigger
Source
①
②
③
④
Channel 1 as trigger signal.
Channel 2 as trigger signal.
Channel 3 as trigger signal.
Channel 4 as trigger signal.
Modu
NTSC
PAL
SECAM
Select video modulation
Sync
Line
Field
Odd
Even
Line NO.
Synchronic trigger in video line
Synchronic trigger in video field
Synchronic trigger in video odd filed
Synchronic trigger in video even field
Synchronic trigger in designed video line, turn the G
knob to set the line number
Mode
Holdoff
Auto
Holdoff
Reset
Acquire waveform even no trigger occurred
100ns~10s, adjust the G knob to set time interval
before another trigger occur
Set Holdoff time as 100ns
3. Pulse Width Trigger
Pulse trigger occurs according to the width of pulse. The abnormal signals can be
detected through setting up the pulse width condition.
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