GRASS VALLEY CR6400 Family, User Manual

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Glossary
AES/EBU (Audio Engineering Society/European Broadcasting Union). AES and EBU are standards
organizations.
AES3, AES3id AES/EBU formulated this professional serial interface in 1992. The standard typically transmits
PCM and Dolby Digital 5.1, but is not tied to any particular sampling rate or any particular audio
format.
Grass Valley’s compact AES routers support AES3id and provide 75
W
BNC connectors. AES3id is
specified for 75
W
coaxial cable up to 1000 meters.
Asynchro-
nous As it applies to the compact AES routers, “asynchronous” means switched without a video refer-
ence signal. In asynchronous mode, the AES router passes the input to the output unmodified.
Breakaway A route where signals are taken from different sources. A breakaway might, for example, take
video from one source and audio from another source.
CQX An abbreviation for “clean and quiet.”
CR6400 A family of 2RU routers that have a 64×64 switching matrix and modular construction. The
family includes a 2RU control panel.
Device A device is a grouping of input and output ports that define a logical entity. (The logical entity
does not have to be a real entity.) For example, a system might have 3 levels: video, AES, and
time code. A hypothetical device in this system is Camera 1, which consists of video on input
port 1 of the video router, AES on input port 5 of the AES router, and time code on input port 8
of the time code router. (You can use an analog audio router to router time-code signals.)
DVB-ASI (Digital Video Broadcast — Asynchronous Signal Interface) A transmission scheme for MPEG-2
payloads at up to 270 Mbps. It was developed for transmission over long distances subject to
high noise levels.
High-tally Bright, in reference to a lamp or LED.
Hold During a breakaway take, the level selections remain unchanged. (‘No Hold’ means that levels
are selected anew at the next source or next destination.
Input/output Inputs and outputs are the physical connections on the back of the router. The term “input port”
is used interchangeably with “input” and the term “output port” is used interchangeably with
“output.”
IP address A 32-bit number that identifies a device on an Ethernet LAN. The address is commonly
expressed as a series of 4 numbers separated by periods. Each of the 4 numbers represents 8 of
the 32 bits.
Level In a compact router system, a (physical) level is the same thing as a router partition. (The parti-
tion can be the entire router.)
Lock A “destination lock” protects a destination from being switched to a different source. A “panel
lock” prevents accidental changes at a panel.
Low-tally Dim, in reference to a lamp or LED.