Glossary
© 2012 Harmonic Inc.
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ProView 7000 v.2.6, Rev. E
FEC
Forward Error Correction. An encoding technique that permits the correction of data which has
received errors on the receiving end.
firmware
Embedded software that is stored in read-only memory. Firmware can consist of startup routines and
other functions that are stored on memory devices such as ROMs, PROMs, and EPROMs.
FTA
Free To Air.
G
gain
The amount of increase that an amplifier provides to the output side of a circuit.
GbE
Gigabit Ethernet. A transmission technology based on the IEEE Ethernet frame format and protocol
used in local area networks that provide a data rate of 1 billion bits per second.
GMT
Greenwich Mean Time. The time in Greenwich, England, which is the location of the prime meridian (0
degrees longitude). All time zones are referenced to this meridian.
GOP
Group Of Pictures. An MPEG-2 video coding structure, a GOP may be either “open” or “closed”. Note
that AVC does not define a GOP by itself, but has equivalent structural constructs.
H
HD
High Definition.
HDD
Hard disk drive.
HE AAC
High Efficiency Advanced Audio Codec.
header
Several bytes at the beginning of a packet that determine the identification of the packet, possibly the
type of data and other attributes within the packet.
Hertz (Hz)
A unit of frequency defined as one cycle per second. Abbreviated Hz.
