HE4000 Encoding System
Glossary
M
mA
Milliampere
Mbps
Megabits per second. A ratio of 1,000,000 bits transmitted per second. For
example, 15 Mbps is equal to 15,000,000 bits transmitted per second.
MCPC
See multi-channel-per-carrier.
MFAS
Multi-Frame Acquisition Sync. See FAS.
MHz
Megahertz
MIB
Management Information Base
Mod
Modulator or Modulated
Mono Channel
Referring to one audio output not contained in a stereo mix.
MPEG
Moving Picture Experts Group.
1.
A joint committee of the International Standards Organization (ISO) and
the International Electrotechnical Commission (IEC).
2.
A series of hardware and software standards designed to reduce the
storage requirements of digital video.
3.
A compression scheme for full motion video.
MPEG-1
Refers to ISO/IEC standards developed in 1991 by the ISO/IEC JTC1/SC29
WG11, Moving Picture Experts Group.
MPEG-2
Refers to ISO/IEC standards 13818-1 (Systems), 13818-2 (Video), 13818-3
(Audio), 13818-4 (Compliance).
ms or msec
Millisecond
MTBF
Mean time between failures. The length of time a user may reasonably expect
a device or system to work before an incapacitating fault occurs.
Multi-Channel-
Per-Carrier
Two or more video programs transmitted per digital transport stream.
M&C
Monitor and Control
N
NC
Normally Closed
Network
Management
System
A system designed to keep a network operating near maximum efficiency and
to provide operator interface to the managed system for configuring, isolating
and correcting faults, and monitoring operational performance.
NO
Normally Open
Non-Volatile,
Field-
Programmable
Memory
A type of Flash ROM used to store configuration parameters. The ROM memory
is configurable by the user but will not clear if the unit loses power.
ns
Nanoseconds
NSAP
Network Service Access Point. 20 octets ATM address per ISO8348 and ITU-T
X.213.
01-0951-404 Rev B
GL-7