Wegener Communications 6420 user manual Lcd

			iPump 6420 User’s Manual
Term		Definition
Language Descriptor		Identifier for a single component compressed audio stream under an
or LD		MPEG Program within a Transport stream.
Linux		A modern, open-source (free) operating system (OS). The OS provides
		these standardized services to the i6420 application software: 1) access to
		the hardware, 2) rations access to the microprocess for the application’s
		multiple processes, 3) interrupts the application with events and messages,
		4) ration computer resources, and 4) allows standard communication
		methods to external hosts.
LAN		Local area network. An IP/Ethernet network to which either the i6420
		LAN or WAN ports may be connected.
LCD		Liquid Crystal Display. Text display technology for i6420 front-panel.
LED		Light emitting diode. Display lamps for i6420 front-panel.
LNB		Low-noise block downconverter - equipment (generally at the antenna)
		that converts the incoming satellite signal to the appropriate frequency for
		reception by the iPump 6420.
MPEG		Moving Pictures Experts Group. Often used to describe a set of
		specifications based on ISO 13818-x.
PAT		Program Allocation Table. A single metadata structure provided in all
		MPEG Transport streams that show what Programs are available.
Permanent Setting		A non-volatile setting of the i6420, which has no time limit.
PID		Packet ID. Identifies a specific single data stream within an aggregate
		MPEG Transport stream.
PMT		Program Map Table. A single metadata structure that is provided in
		MPEG Transport streams, one such “table” per Program. Gives
		information about the media components (video, audios, data, etc.) within
		the Program.
Playlist		In an i6420, an ordered set of playable media files. When used, the entire
		set is played or executed in its entirety.
Program		Under MPEG, these are the basic channels under which media is conveyed
		in MPEG Transports. Typically, all media services within a Program
		share a single time-base.
Program Number		An identifier unique to each Program within a Transport.
PPP		PPP (Point-to-Point Protocol) is a protocol for communication between two
		computers using a serial interface, typically a personal computer connected
		by phone line to a server.
QPSK		Quadrature-phase-shift-keying. Term usually used to imply the specific
		carrier protocol (modulation and FEC) described in DVB specifications
		and used world-wide to convey MPEG Transports over satellites.
RF		Radio Frequency. Often used as a noun to mean any RF signal, such as the
		satellite downlink signal, or the IF signal emitted from the antenna LNB.
Server		A computing program that constantly runs, while waiting to deliver, and
		then performing the delivery of services to other programs running on the
		same or other computers. Also used to describe the computer upon which
		a server program is running.
SMB		Server message block - a protocol for requesting services from and reading
		and writing to a file server. An SMB server can present its files for easy
		viewing by Windows Explorer.
Telnet		Industry-standard method for communicating between host computers
		over IP networks.
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