Triggers 11
Keysight InfiniiVision 1200 X-Series and EDUX1052A/G Oscilloscopes User's Guide 115
 
To trigger on all fields of the video signal
To quickly and easily view transitions between fields, or to find the amplitude 
differences between the fields, use the All Fields trigger mode.
1 Press the [Trigger] key.
2 In the Trigger menu, press the Trigger Type softkey.
3 Press the Trigger Type softkey; then, turn the Entry knob to select Video.
4 Press the Settings softkey, then press the Standard softkey to select the 
appropriate TV standard.
5 Press the Mode softkey and select All Fields.
Figure 17 Triggering on Field 1