B&K Precision 2542B-GEN - Manual - Manual (Page 65)

Basic Operation
65
2.5 Trigger Controls
The trigger controls determine when the oscilloscope starts to
acquire and display the waveform. When a trigger is found,
the oscilloscope will acquire sufficent data to display the
waveform.
Note: Trigger controls are functional when the
oscilloscope works under Main or Delayed
horizontal mode.
Trigger Controls