Belden Grass Valley EC9535, Справочное руководство, Страница: 36 / 44

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Glossary
National Standards Institute (ANSI) to help develop standards on electronic components,
consumer electronics, electronic information, telecommunications, and Internet security.
ESD Electrostatic discharge
HD HD and HD-SDI are equivalent in Grass Valley terminology. An HD signal is a high definition, serial
digital interface video format that conforms to the SMPTE 292M standard.
I/O Inputs and outputs are the physical connections (e.g., BNCs) on the back of the routing switcher.
The term “input port” is used interchangeably with “input” and the term “output port” is used
interchangeably with “output.”
Matrix 1. The rack-mounted EC9535 chassis or frame which contains the subassemblies (modules, back-
planes, power supplies, etc.) which comprise the EC9535.
2. An X-Y array of crosspoint switches, a crosspoint matrix .
Module 1. In the EC9535, modules are electronic assemblies that plug into the matrix. Modules include
but are not limited to input, output and controller printed circuit boards also called active cards.
2. Any removable subassembly may be referred to as a module. Router backplanes may occasion-
ally be referred to as modules.
Operator The term operator usually refers to users other than the system administrator. An operator is
responsible for making most of the routes.
Physical Level In a GSC Node Bus Converter system, a physical level is the same thing as a router. The idea is that
multiple routers provide different “levels” on which to switch the signals of devices. Any partic-
ular device might send or receive HD, SD, AES, time-code, or machine-code signals. A GSC Node
Bus Converter switches one type, or level, of a device’s signal set.
Physically
Contiguous Matrix modules are said to be in physically contiguous slots in a EC9535 frame when both the
inputs and outputs associated with those slots are in numerical sequence. For example, input
slots 5 and 6 are physically contiguous because inputs 1-16 and 17-32 are in numerical sequence.
In the same way, output slots 4 and 16 are contiguous because outputs 49-64 (slot 4) and 65-80
(slot 16) are in numerical sequence.
Port A port is the physical connection on a router. In a configuration application system, a port can
only be an input port or an output port.
Reference
Signal A timing signal used to synchronize events such as the switching of video signals during a
specific portion of the vertical interval. Reference signals are externally applied. In their absence,
internally generated signals are used to sustain operation.
RAM Random Access Memory
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 broadcast industry to trans-
port Ethernet or machine control signals.
RS-422 Sometimes referred to as RS-422 or TIA/RS-422-B and other similar variations. A bidirectional
communications standard. The use of this term implies that NVISION intends to refer to the latest
standard in effect at the time the product was developed.
RU Rack Units. A standard measure or size for frames (1.75 inches).
SD SD and SDI are equivalent terms in NVISION documents. An SD signal is a standard definition,
serial digital interface video format that conforms to the SMPTE 259M standard.
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 that is connected to one or more