Sending Signals - DirecTV HUGHES/ HTL-HD Owner's Manual

2. IMPORTANT OVERVIEW

2-1. Sending Signals

DIRECTV
Digital broadcasting is a new way of sending programs over the airwaves with superior
quality video and audio. The DIRECTV
digital broadcasting. To fully enjoy it, it is helpful to understand the ways that program
signals are sent.
There are two types of TV signal formats; analog (often called NTSC format; National Television
System Committee) and digital (ATSC format; Advanced Television System Committee). Digital
formats are classified into three categories: High-Definition (HD), Enhanced Definition (ED), and
Standard Definition (SD) according to the resolution or digital picture quality.
There are also three ways that program signals can be received; over-the-air (NTSC, ATSC),
cable and satellite.
9
Satellite
Sat A 101
Sat C 110 Sat B 119
® HD Receiver enables you to take full advantage of
Digital
signal
TV
HD Receiver
Phone
Jack
Analog Cable service
Analog
signal