Grass Valley MRC v.1.2 - Manual (Page 174)

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Glossary
MRC Miranda Router Configurator. A software application that configures and manages NV8500
family routers primarily and other NVISION series routers as well.
Physical Level A physical level is a partition in a router. Often the router has a single partition and that partition
is the entire router. The idea is that multiple routers provide different “levels” on which to switch
the signals of devices in the router control system.
Any particular device might send or receive HD, SD, AES, time-code, or machine-code signals. A
routing switch, or “take,” can occur on multiple physical levels
— often in multiple routers —
simultaneously.
Port A port is a connection on a router. There are input ports, output ports, and control ports.
An input port or output port is numbered, and usually corresponds to a physical connector, but
in the case of MADI, up to 64 ports are time-multiplexed on a single connector.
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.
RAM Random Access Memory. (Contrasted with archaic sequential access memory.)
RS-422 A bidirectional serial communication standard. NVISION series routers usually have a DE-9
connector for RS-422 communication.
SD, SDI SD and SDI are equivalent terms in Miranda terminology. An SD signal is a standard-definition,
video format that conforms to the SMPTE 259M standard.
SMPTE Society of Motion Picture and Television Engineers. An international professional association,
based in the United States.
Source/Desti-
nation The term “source device” is used interchangeably with “source” and the term “destination device”
is used interchangeably with “destination.” A source is a device (such as a camera or satellite feed)
that is connected to one or more input ports of a router. A destination (such as a monitor or
transmitter link) is a device that is connected to one or more output ports.
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 Miranda that refers to the ability of a router to pass a
wide range of digital video formats. Miranda’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
administrator In this document, a system administrator is a person responsible for installing, configuring, or
maintaining a router control system, including configuration workstations, routers, and control
panels.
System
Controller
The name given to an NV9000. An NV9000 router control system includes one or more NV9000
system controllers.