Clear-Com HX System Frames - Manual (Page 85)

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 name in USA.
Full duplex Refers to transmission of signals in two directions simultaneously.
Hopping Refers to making a trunk connection through other matrices to a
destination matrix.
IFB Interruptible Foldback. The term foldback refers to sending
program audio / feed, 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 four-wire
signals of a central matrix port to some other form of
communication, such as 2-wire partyline, telephone, etc. The
interface module is connected to a central matrix port. The
external non-four-wire device is then connected to the interface
module.
I-Series The I-Series is a family of Eclipse HX-supported user panels.
The series includes two display stations, two non-display stations,
two expansion panels, and a level-control panel.
Eclipse HX also supports V-Series panels (see below).
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.
Keygroup KeyGroups provide a way of assigning a label to multiple panels
simultaneously even within a networked matrix system. Once the
KeyGroups have been defined using EHX, all the keys within a
KeyGroup can be changed with a single assignment in Production
Maestro (Pro mode only).
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.
MADI Multichannel Audio Digital Interface. The MADI or AES10
electronic communications protocol defines the data format and
electrical characteristics of an interface carrying multiple channels
of digital audio.
Multiplexing The process by which two or more signals are transmitted over a
single communications channel. Examples include time division
and wavelength division multiplexing.
85 Eclipse HX Matrix Frame Installation Guide