Promax OD-405 Manual De Instrucciones página 186

Holdoff (OD-411/OD-415)
Video standard
(video trigger)
Sync polarity
(video trigger)
Video line
(video trigger)
Pulse condition
(pulse trigger)
Trigger slope
Trigger coupling
Frequency rejection
Noise rejection
Trigger level
11-2011
The holdoff function defines the
waiting
oscilloscope starts triggering again
after a trigger point. The Holdoff
function ensures a stable display.
NTSC National
Committee
PAL Phase Alternative by Line
SECAM SEquential Couleur A Mémoire
Positive polarity
Negative polarity
Selects the trigger point in the
video signal.
field 1 or 2
line 1~263
PAL/SECAM
Sets the pulse width (20ns ~ 10s)
and the triggering condition.
> Longer than = Equal to
< Shorter than ≠ Not equal to
Triggers on the rising edge.
Triggers on the falling edge.
AC Triggers only on AC component.
DC Triggers on AC+DC component.
LF Puts a high-pass filter and rejects
the frequency below 50kHz.
HF Puts a low-pass filter and rejects
the frequency above 50kHz.
Rejects noise signals.
Using the trigger level knob moves
the trigger point up or down.
USER'S MANUAL. OD-405/410B/411/415
period
Television
for NTSC,
before the
System
1~313 for
Page 70