HP 54645A User's And Service Manual page 177

Using Option 005 Enhanced
TV/Video Trigger
You can use the Option 005 Enhanced TV/Video trigger with the
HP 54645A Oscilloscope. One of the first things you will want to do
with your oscilloscope's new Option 005 Enhanced TV/Video trigger is
to become acquainted with its menu choices. Therefore, we have
written the exercises in this chapter to familiarize you with its basic
controls.
To use the TV/Video trigger, you must be familiar with your
oscilloscope. In summary, the front panel of the oscilloscope has
knobs, grey keys, and white keys. The knobs are used most often and
are similar to the knobs on other oscilloscopes. The grey keys bring
up softkey menus on the display that allow you access to many of the
oscilloscope features. The white keys are instant action keys and
menus are not associated with them. The status line of the
oscilloscope, located at the top of of the display, lets you quickly
determine the setup of the oscilloscope.
When Option 005 is installed in the HP 54645A Oscilloscope, the
Display menu has the extra graticule (Grid) choice of TV.
Use NTSC Instead of PAL-M
To trigger on a PAL-M signal, use NTSC. The line and field rates are identical.
6-2