Clear-com Eclipse-PiCo Manuel d'utilisateur télécharger pdf (Page 66)

Clear-Com Communication Systems

Eclipse Glossary

8-2

Fiber-optic Cable A fiber-optic cable consists of a glass core covered

with a reflective material called “cladding” and several layers of buffer

coating to protect the cable from the environment. A laser sends light

pulses through the glass core to the other end of the cable.

FreeSpeak Digital wireless communications product. Sold under the

FreeSpeak name in Europe and Asia and CellCom in USA.

Full Duplex Refers to transmission of signals in two directions

simultaneously.

IFB “Interruptible Foldback”. The term “foldback” refers to sending

“program” audio, or some other audio mix, back to announcers while

they are on the air. Doing so allows announcers to monitor

themselves, other announcers, videotapes of commercials, or some

mix of sources, while they on the air. This is typically found in television

news and live broadcast events.

Announcers typically wear a small ear piece so they can hear the

selected foldback audio mix. When a director wants to give directions

to an announcer on air, or to announce changes in the program, the

director must “interrupt” the foldback. To do this, the director uses a

channel specifically set up to interrupt the foldback audio.

Interface Module A piece of electronic hardware designed to convert

the 4-wire signals of a central matrix port to some other form of

communication, such as 2-wire party line, telephone, etc. The interface

module is connected to a central matrix port. The external non-4-wire

device is then connected to the interface module.

ISO The ISO function, short for “panel ISOlation”, allows a panel

operator to call a destination and interrupt all of that destination’s other

audio paths and establish a private conversation. When the call is

completed the destination’s audio pathways are restored to their

original state before the interruption.

IV-R Instant Voice Router. Software that routes digital audio data

between Concert users and between Concert users and Eclipse

systems.

Label A label is an alphanumeric name of up to five characters that

identifies a source, destination, or control function accessed by an

intercom panel. Labels appear in the displays of the intercom panel.

Labels can identify panels, ports interfaced to other external

equipment, fixed groups, party lines, and special control functions.

Mode A term used to describe a light path through a fiber as in

multimode or single mode.

Multimode Fiber-optic Cable The glass core of a multimode fiber is

larger than the core of a single mode fiber, which causes the

transmitted light beam to disperse as it travels through the core. Single

mode fiber, with its smaller core, concentrates the light beam so that it

carries signals further. Multimode fiber was the first type of fiber offered

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Clear-com Eclipse-PiCo Manuel d'utilisateur Page 66

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