Promax OD-405, Manual, Page: 185 / 218

USER’S MANUAL. OD-405/410B/411/415
Page 69 11-2011
En
g
lis
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Indicators Edge/ Pulse Video
(CH1, Edge, Rising (CH1, Video, Positive polarity
edge, DC coupling), NTSC standard)
5.7.2 Trigger parameter
Trigger source CH1~CH2 Channel 1~ Channel 2 input signals.
Ext External trigger input signal
Line AC mains signal
Trigger mode Auto The oscilloscope updates the input
signal regardless of the trigger
conditions (if there is no trigger
event, the oscilloscope generates an
internal trigger). Select this mode
especially when viewing rolling
waveforms at a slow timebase. The
Auto trigger status appears in the
upper right corner of the display.
Single
The oscilloscope acquires the input
signals once when a trigger event
occurs, then stops acquiring.
Pressing the Single key again will
repeat the process.
The Single trigger status appears in
the upper right corner of the display.
Normal The oscilloscope acquires and
updates the input signals only when
a trigger event occurs.
The Normal trigger status appears in
the upper right corner of the display.