Grass Valley UniConfi NVISION Series v.2.1 - Manual (Page 157)

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UniConfig
User’s Guide
Physical Level A physical level is a partition (i.e., a region) of a router’s switching matrix (or crosspoint
matrix). Often the router has a single partition and that partition is the entire matrix.
The idea is that multiple routers provide different “levels” on which to switch the
signals of devices in the router control system.
Some routers switch signals of a single type; other routers can switch signals of
multiple types (HD, SD, AES, etc.).
In the NV9000 router control system, a route, or “take,” can occur on multiple physical
levels
— whether in multiple routers or a single router — simultaneously.
Port A port is a connection on a router. There are input ports, output ports, and control
ports.
Input ports and output ports are numbered in sequence, and each one usually corre-
sponds to a physical connector, but in the case of MADI, up to 64 ports are time-
multiplexed on a single connector.
RAM Random Access Memory. (Contrasted with archaic sequential access memory.)
Reference
Signal
A video reference is a timing signal used to synchronize the switching of video signals
during a specific portion of the vertical retrace interval. An AES reference signal
synchronizes the switching of AES signals.
RJ45, RJ-45 Registered Jack, type 45, as defined in the United States Code of Federal Regulations. A
common 8-pin modular plug and/or jack used in the telecommunications and broad-
cast industry to transport Ethernet or machine control signals.
RS-422 A bidirectional serial communication standard. NVISION series routers usually have a
DE-9 connector for RS-422 communication.
RU Rack Units. A standard measure or size for frames (1.75 inches).
SD Standard Definition. An SD signal is a serial digital video format that conforms to the
SMPTE 259M standard.
SMPTE Society of Motion Picture and Television Engineers. An international professional asso-
ciation, based in the United States.
Source/
Destination
The term “source device” is used interchangeably with “source” and the term “destina-
tion device” is used interchangeably with “destination.” A source is a device, such as a
camera, that is connected to one or more input ports. A destination is a device that is
connected to one or more output ports. An example of such a device would be a
monitor. A device can be both a source and destination. An example of such a device is
a VTR.
SWB (Super Wide Band). A term originating at Grass Valley that refers to the ability of a
router to pass a wide range of digital video formats. Grass Valley’s SWB supports data
rates from about 15
Mb/s to 1.5 GB/s. (This term does not include 3Gig signals.)
Sync AES, Async
AES The term ‘Async AES” refers to an asynchronous (free-running) AES-compliant audio
signal, whereas ‘Sync AES” refers to a synchronous (clocked) AES signal with a data rate
of 48,000 samples per second.
System admin-
istrator In this document, a system administrator is a person responsible for installing, config-
uring, or maintaining a router control system, including configuration workstations,
routers, and control panels.