Agilent Technologies InfiniiVision 2000 X-Series User Manual page 126

9
Triggers
8 Press the Mode softkey to select the portion of the video signal that you
9 If you select a line # mode, press the Line # softkey, then rotate the
Video standard
NTSC
PAL
PAL-M
SECAM
Video Triggering
The following are exercises to familiarize you with video triggering. These
Examples
exercises use the NTSC video standard.
•
126
• Horizontal time/division is set to 10 µs/div for NTSC/PAL/SECAM
standards.
• Horizontal delay is set so that trigger is at first horizontal division
from the left.
You can also press [Analyze]> Features and then select Video to quickly
access the video triggering automatic set up and display options.
would like to trigger on.
The Video 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.
All Lines — Trigger on all horizontal sync pulses.
•
Line: Field1 and Line:Field2 — Trigger on the selected line # in field 1 or
•
field 2 (interlaced standards only).
Line: Alternate — Alternately trigger on the selected line # in field 1
•
and field 2 (NTSC, PAL, PAL- M, and SECAM only).
Entry knob to select the line number on which you want to trigger.
The following table lists the line (or count) numbers per field for each
video standard.
Field 1
1 to 263
1 to 313
1 to 263
1 to 313
"To trigger on a specific line of video"
Field 2
1 to 262
314 to 625
264 to 525
314 to 625
Agilent InfiniiVision 2000 X-Series Oscilloscopes User's Guide
Alt Field
1 to 262
1 to 312
1 to 262
1 to 312
on page 127