User manual

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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.
SINGLE
Pressing the Single key again will repeat the process. 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)
Holdoff The holdoff function denes the waiting period before the VDO-2000A starts trig-
gering again after a trigger point. The Holdoff function ensures a stable display.
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.
eld 1 or 2