Sheppard Cares. Sheppard AFB provides a wide variety of services to support Airmen and their families. To learn what's happening this month, check out the Sheppard Community Board. To quickly find and register for classes available on base, click the Leadership Pathways logo to the right.
NTSC stands for National Television Standards Committee. PAL stands for Phase Alternating Line. NTSC is the standard broadcast format in the United States, while PAL is the standard broadcast format in Europe, Australia, and parts of Asia.
NTSC is the official analog video standard in the U.S., Canada, Mexico, some parts of Central and South America, Japan, Taiwan and Korea. PAL is the dominant format in the World for analog television broadcasting and analog video display. PAL based on a 625 line or pixel row, 50 field/25 frames a second, 50Hz system. The signal is interlaced, like NTSC into two fields, composed of 312 lines or pixel rows each.