Fluke CombiScope PM3370B User Manual page 207

FUNCTION REFERENCE
Key sequence:
Toggle softkey to switch between edge and tv triggering.
In digital mode also glitch triggering.
Toggle softkey to switch between TV triggering on field 1,
field 2, or line sync pulses.
Control to select the line number.
Toggle softkey to select between pos(itive) and
neg(ative) signal polarity.
Softkey pair for video system selection.
Softkey pair for selection of max. number of HDTV lines.
Selects the channel and toggles between pos(itive) and
neg(ative) signal polarity (no edge selection)
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