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 vs PAL: Electrical power system. Transmission using different electrical power systems is the beginning of the differences between NTSC and PAL. In America and other countries that adopt the NTSC signal, electrical power is generated at 60 hertz. That means NTSC signal is transmitted at 60 'fields' per second (30 images are sent out per second).