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Appendixes
IP-900 Series
120
Glossary
AES/EBU
AES (Audio Engineering Society) and EBU
(European Broadcasting Union) standardized
for the professional digital audio I/O (IEC-60958
TYPE-1.) It was applied to ANSI (American
National Standard Institute) too.
Alarm Log
A record of errors occurred on devices and
communication lines.
Ancillary Data
Transmitted kinds of data located in the
blanking area of digital video interface (e.g.,
audio data and time code data.)
ARP (Address Resolution Protocol)
A protocol that is used to acquire the MAC
address of the transmission destination of
Ethernet frames. This protocol uses an IP
address to acquire the MAC address. If the MAC
address of the transmission destination of IP
packets is unknown, an ARP packet requesting
the MAC address is broadcast. The MAC
address is acquired using the response to this
request.
ARQ (Automatic Repeat Request)
An error correcting method that error packet
will be re-transmitted automatically when packet
error is detected at the receiver (Decoder.)
IP-9500/IP-900 series products have the
real-time high error-control ability, equipped with
the original “FEC + ARQ hybrid method.”
BISS (Basic Interoperable Scrambling
System)
A scrambling system formulated by the EBU in
May 2002. This system has 3 modes: MODE 0,
MODE 1 and MODE E. In MODE 1, a
12-character (48-bit) session word is used for
encryption and decryption. In MODE E, a
16-character (64-bit) encrypted session word
and 14-character (56-bit) injected ID are used
for encryption and decryption. In MODE 0,
encryption is not used.
BB (Black Burst)
Sync signal of black level’s video signal which
is used to be synchronize
BNC (Bayonet Neill Concelman)
One of the coaxial cable connecters which
have the 75ohms impedance. It uses the lock
called Bayonet Lock and is very easy and
compact to use. It is used for the test gear and
the digital audio because it supports up to 4GHz
high frequency.
Browser
A generic name for programs that support a
user who wants to fetch a desired option from a
number of options. Using a browser, the user
can trace links on the World Wide Web to
access such multimedia information as text,
audio, and video by the simple selection of items
with a mouse or other pointing device.
Carrier Frequency
Radio wave output frequency of a modulator
card. Low-frequency transmission data is
overlaid on a high-frequency signal during
modulation, and this high-frequency signal is
called a carrier wave. The frequency of a carrier
wave is called the carrier frequency.
CAT (Conditional Access Table)
An information table to support the limited
receiving.
CC (Closed Captioning)
Data for broadcast captioning. It is multiplexed
at ancillary data area, virtual or horizontal
blanking area of video signal, in HD/SD-SHI
signal.