Clear-Com HX System Frames - Manual (Page 68)

Conference An internal matrix virtual partyline or busbar where many panels
and interfaces can talk onto or listen from the party line without
talking to themselves.
Destination A device such as an intercom panel, beltpack, or interface to which
audio signals are sent. The device from which audio signals are
sent is called a source.
Duplex All real-time communication between individuals talking face to
face is full duplex, meaning that they can both talk and listen
simultaneously. The Eclipse HX matrices provide full-duplex audio.
EHX EHX is the Eclipse HX configuration software. EHX guides the
operation of the matrix circuit cards and connected panels.
Ethernet International standard which describes how information is
transmitted across a network. Provides for the efficient
organization of network components.
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
68 Eclipse HX-PiCo User Guide