66
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.
SINGLE
The Single trigger status appears in the
upper right corner of the display.
(Searching)
(Triggered)
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.
(Searching)
(Triggered)
Video standard
(video trigger)
NTSC
National Television System Committee
PAL
Phase Alternative by Line
SECAM SEquential Couleur A Mémoire
Sync polarity
(video trigger)
Positive polarity
Negative polarity
Video line
(video trigger)
Selects the trigger point in the video signal.
field
1 or 2
line
1~263 for NTSC
1~313 for PAL/SECAM
Pulse condition
(pulse trigger)
Sets the pulse width (20ns ~ 10s) and the
triggering condition.
>
Longer than
=
Equal to
<
Shorter than
≠
Not equal to
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