Harmonic ProView 7000 - Page 198

Glossary
Numerics  A B C  D E F G H I J L M N O P 
Q R S T U V W Y 
© 2011 Harmonic Inc. 198 ProView 7000 v.2.4, Rev. A
BER
Bit Error Rate. The ratio of bits transmitted in error to the total bits sent. For example, a BER of
10
6
means 1 bit in a million is received in error.
BISS
Basic Interoperable Scrambling System. An open standard for protecting digital contribution
applications.
Bit rate
The average bitrate of the bit stream, in bits per second, during the sampling period.
Black video
A video signal where there is no luminance or chrominance information. Either intentionally
created for a short period of time or the result of a failure in a transmission system.
blanking interval
The process or time period when the cathode ray tube (CRT) beam is turned off so that the beam
retrace does not interfere with the picture.
BNC
A standard coaxial cable connector named for the inventors (Neill and Concelman) and the
connection type (bayonet).
BOOTP
Bootstrap Protocol. Used to supply hosts with IP addresses and a TFTP boot file name. BOOTP
requests and replies are encapsulated in a User Datagram Protocol (UDP) packet. The BOOTP
server uses an address resolution protocol (ARP) cache to map MAC addresses to IP addresses.
When the server receives a BOOTP request from a MAC address listed in its cache, the server
sends a reply to the
MAC address .
broadcast encoding system
An assembly of components that compresses, multiplexes, and scrambles program material.
broadcast modulator
See modulator .
C
CA
Conditional Access. Provides operator control over customer access to broadcast materials.
CA Descriptor
A descriptor which may be added to the PMT and identifies the CA system and other
information related to that system.