Glossary
© 2012 Harmonic Inc.
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ProView 7000 v.2.6, Rev. E
SNMP
Simple Network Management Protocol. The protocol that Harmonic control and management systems
use to configure and monitor Harmonic devices remotely over IP.
SNR
Signal-to-Noise Ratio. The ratio of the amplitude (power, volume) of a data signal to the amount of
noise (interference) in the line. It measures the clarity and quality of a transmission channel or
electronic device, usually in decibels.
Socket
An additional qualifying value for an IP address used by the UDP protocol.
SPTS
MPEG-2 Single Program Transport Stream.
SR
Symbol Rate.
status bar
The status bar, usually located at the bottom of the application window, indicates the current selection
and displays explanatory text for toolbar and menu selections.
STB
Set Top Box.
STC
System Time Clock. This clock is the common 27-MHz clock that is used to create both PCRs and system
clock references (SCRs).
stereo
A stereo signal consists of two audio signals that are directly related to each other, one signal
representing the left side of the soundfield and the other the right side.
subnet mask
A subnet mask is a bit combination used to describe which part of an address refers to the network or
the subnet, and which part refers to the host or destination device.
symbol rate
The encoded transmission rate in a modulated stream, expressed in Mbaud.
T
TCP
Transmission Control Protocol.
TDT
Time and Date Table. This DVB-SI table contains frequently updated information that relates to the
present time and date.
See also
