Agilent Technologies 2000 X, User Manual

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126 Agilent InfiniiVision 2000 X-Series Oscilloscopes User's Guide
9
Triggers
• 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.
8
Press the
Mode
softkey to select the portion of the video signal that you
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).
9 If you select a line # mode, press the Line # softkey, then rotate the
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.
Video Triggering
Examples
The following are exercises to familiarize you with video triggering. These
exercises use the NTSC video standard.
• "To trigger on a specific line of video" on page 127
Video standard Field 1 Field 2 Alt Field
NTSC 1 to 263 1 to 262 1 to 262
PAL 1 to 313 314 to 625 1 to 312
PAL-M 1 to 263 264 to 525 1 to 262
SECAM 1 to 313 314 to 625 1 to 312