Scientific SMO1000E, User Manual

Page: 77 / 185

Scientific
SMO1000E 77/185
Video Trigger
Video triggering can be used to capture the complicated waveforms of most standard
analog video signals. The trigger circuitry detects the vertical and horizontal interval of
the waveform and produces triggers based on the video trigger settings you have
selected. The oscilloscope supports standard video signal field or line of NTSC (National
Television Standards Committee), PAL (Phase Alternating Line) HDTV (High Definition
Television) and custom video signal trigger.
1. Press the Setup button on the front panel to enter the TRIGGER function menu.
2. Press the Type softkey; then turn the Universal Knob to select Video and push
down the knob to confirm.
3. Press the Source softkey; turn the Universal Knob to select CH1 or CH2 as
the trigger source. Turn the Trigger Level Knob does not change the trigger
level because the trigger level is automatically set to the sync pulse.
4. Press the Standard softkey to select the desired video standard. The oscilloscope
supports the following video standards.
Standard Type Sync Pulse
NTSC Interlaced BI-level
PAL Interlaced BI-level
HDTV 720P/50 Progressive Tri-level
HDTV 720P/60 Progressive Tri-level
HDTV 1080P/50 Progressive Tri-level
HDTV 1080P/60 Progressive Tri-level
HDTV 1080i/50 Progressive Tri-level
HDTV 1080i/50 Progressive Tri-level
Custom
The table below shows the parameters of the Custom video trigger.
Frame Rate 25Hz, 30Hz, 50Hz, 60Hz
Of Lines 300~2000
Of Fields 1, 2, 3, 4
Interlace 1:1, 2:1, 4:1, 8:1
Trigger Position Line Field
(line value)/1 1
(line value)/2 2
(line value)/3 3
(line value)/4 4
(line value)/5 5
(line value)/6 6
(line value)/7 7
(line value)/8 8