Agilent Technologies MSO6012A User Manual page 187

4 Triggering the Oscilloscope
186
The selected trigger source is displayed in the upper-right
corner of the display. Turning the Trigger Level knob does not
change the trigger level because the trigger level is
automatically set to the sync pulse. Trigger coupling is
automatically set to TV in the Trigger Mode/Coupling menu.
Provide Correct Matching
Many TV signals are produced from 75 Ω sources. To provide correct matching to
these sources, a 75 Ω terminator (such as an Agilent 11094B) should be
connected to the oscilloscope input.
3 Press the sync polarity softkey to set the TV trigger to either
positive ( ) or negative (
4 Press the Standard softkey to set the TV standard.
The oscilloscope supports triggering on the following
television (TV) and video standards.
Standard
NTSC
PAL
PAL-M
SECAM
Generic
EDTV 480p/60
HDTV 720p/60
HDTV 1080p/24
HDTV 1080p/25
HDTV 1080i/50
HDTV 1080i/60
5 Press the Mode softkey to select the portion of the video
signal that you would like to trigger on.
The TV trigger modes available are:
Field1 and Field2 — Trigger on the rising edge of the first
•
serration pulse of field 1 or field 2 (interlaced standards
only).
All Fields — Trigger on the rising edge of the first pulse in
•
the vertical sync interval (not available in Generic mode).
All Lines — Trigger on all horizontal sync pulses.
•
) sync polarity.
Type
Interlaced
Interlaced
Interlaced
Interlaced
Interlaced/Progressive
Progressive
Progressive
Progressive
Progressive
Interlaced
Interlaced
6000 Series Oscilloscope User's Guide
Sync Pulse
Bi-level
Bi-level
Bi-level
Bi-level
Bi-level/Tri-level
Bi-level
Tri-level
Tri-level
Tri-level
Tri-level
Tri-level