Chapter 5 To Trigger the Oscilloscope    RIGOL 
MSO7000/DS7000 User Guide  5-15 
Video Trigger 
 
The video signal can include image information and timing information, which adopts 
different standards and formats. MSO7000/DS7000 series can trigger on the 
standard video signal field or line of NTSC (National Television Standards Committee), 
PAL (Phase Alternating Line), or SECAM (Sequential Couleur A Memoire). 
 
Trigger Type: 
Press Type, and then rotate the multifunction knob    to select "Video". Press 
down the knob to select the trigger type. Then, the current trigger setting 
information is displayed at the upper-right corner of the screen, as shown in the 
figure below. You can also press Type continuously or enable the touch screen to tap 
the desired trigger type and select it. 
   
 
Source Selection: 
Press Source to switch the trigger source and select CH1-CH4. For details, refer to 
descriptions in  "Trigger  Source".  The  current  trigger  source  is  displayed  at  the 
upper-right corner of the screen. 
Note: Only when we select the channel (that has been input with signals) as the 
trigger source, can we obtain a stable trigger. 
 
Video Polarity: 
Press  Polarity  continuously  to  select  the  desired  video  polarity.  The  polarities 
available are positive polarity ( ) and negative polarity ( ).   
 
Video Standard: 
Press Standard and rotate the multifunction knob    to select the desired video 
standard. You can also press Standard continuously to select the video standard or 
enable the touch screen to tap the desired video standard and select it.