Triggering 4
InfiniiVision Oscilloscopes User’s Guide 157
2 Press the Source softkey and select any analog channel as the TV trigger source.
The selected trigger source is displayed in the upper-right corner of the display.
Turning the Trigger Level knob does not change the trigger level because the trigger
level is automatically set to the sync pulse. Trigger coupling is automatically set to TV
in the Trigger Mode and Coupling Menu.
3 Press the sync polarity softkey to set the TV trigger to either positive ( ) or
negative ( ) sync polarity.
Source
channel
Sync
polarity
TV Standard Line #
TV Mode
Selected
channel
TV
trigger
Return to
previous menu
TV mode
Provide Correct Matching
Many TV signals are produced from 75 sources. To provide correct matching to these sources, a
75 terminator (such as an Agilent 11094B) should be connected to the oscilloscope input.