2
1.2 System equipment
1. Conference Main Unit (CMU)
The Conference Main Unit forms the core of the entire
conference system. It provides power supply to all
contribution units and serves as key component to link
system hardware to Web control. In stand-alone mode,
the CMU only carries out basic management facilities;
while more comprehensive management facilities can
be implemented through the Web control.
By using network techniques, conference systems are
linked tightly to the rapidly developing internet
technology, communication technology and computer
science. Users enjoy the convenience of the
contemporary leading techniques, e.g. by using the
compatible wireless LAN techniques (802.11) - such as
PDAs - which can be used to control a conference
system wirelessly. The import of network topology also
makes the conference system merge with intelligent
building networks.
The dedicated 6-pin cable is used to transmit high
quality digital audio, control and other information data,
avoiding cables cluttering up the conference venues
and adaptable to any system cabling requirements.
The main unit has a dapper configuration can put on
the council board direct and agile for use and move.
The professional 6P-DIN standard plug and clasp
improve system connection reliability, while facilitate
system installation and disassembly; the “daisy chain”
design of contribution units enables the units to be
added into the system at any desired point, and
simplifies equipment extension and maintenance
significantly.
2. Contribution units
Contribution units are units used by participants to
contribute to a conference. It is built-in loudspeaker
and earphone jack. There are tabletop designs
convenient for using.
Low power consumption design is adopted in
HCS-3900 series conference units, convenient for
wiring and installation.
All conference units of HCS-3900 series are supplied
by the main unit’s 6P-DIN interface. Since the power
capacity of the 6P-DIN interface is limited, it must be
ensured during installation that the added up values of
a) the total power consumption of all conference units
connected in each path and b) the power loss in
extension cables do in no case exceed the maximum
possible value delivered by each 6P-DIN interface.
Otherwise the system will not work properly or
automatic protection will be triggered (see section 4.1
for details).
3. Accessories
Relevant accessories connected or used in HCS-3900
series include: Connections cables, Grounding cable
sockets and Earphones/Headphones, etc.
