Clear-Com HX System Frames - Manual (Page 21)

Central processing unit (CPU)
The central processing unit (CPU) provides the serial data and Ethernet connection to the
PC hosting the EHX software.
The CPU also coordinates the data flow for other features of the system, such as general-
purpose outputs and inputs. The CPU stores four complete system configurations in its
memory, which can be retrieved and activated directly from the matrix front-panel controls,
even when the matrix is not connected to a computer.
• Each matrix system contains at least one central processing unit, located either
on its own removable CPU card, or in internal circuitry.
The Eclipse HX-Omega, Eclipse HX-Median and Eclipse HX-Delta are supplied with two
CPU cards (in a master and slave relationship), ensuring fail-safe operation.
Internal circuitry
The matrix internal circuitry controls the operation of the panels and interfaces connected
to it. Panels and interfaces connect to the internal circuitry through an RJ-45 connector, or
port, on the rear panel of the matrix. The internal circuitry sends balanced duplex audio
and RS-422 data signals to and from connected audio equipment through 4-pair shielded
category-5 (CAT5) cable (STP).
Each audio device connected to the matrix can communicate with all other audio devices
in the system. For intelligent linking, shielded category-5 cable is run from a port on one
Eclipse matrix to a port on a second Eclipse matrix to form a trunkline connection.
The Eclipse HX-Omega, Eclipse HX-Median and Eclipse HX-Delta matrix internal circuitry
can also control fiber optic interfaces to provide high-speed links between matrices and E1
interfaces to allow communication with wireless system antennae.
Power supplies
Each Eclipse HX-Median, Eclipse HX-Omega or Eclipse HX-Delta matrix can hold two
independent power supplies. These may be connected to a main and backup power
source for redundancy. If one of these power supplies fails, the second supply
automatically takes over.
In the event of a complete power failure, a matrix can automatically restore itself to
complete functioning by retrieving configuration information from its non-volatile
operational memory.
The Eclipse HX-PiCo matrix has a dual AC input power supply unit.
Rear-panel connectors
A matrix connects to remote devices such as user panels, interfaces, general purpose
inputs and outputs, local area networks (LANs), the computer that hosts the EHX
configuration software, and other matrices through its rear-panel connectors.
The rear-panel RJ-45 sockets, or ports, connect the matrix to intercom panels, beltpack
antennas, Concert servers, other matrices and interfaces with shielded category 5 (CAT5)
cable.
21 Eclipse EHX Software User Guide