Bosch Digital Congress Network Technical Information Page 29

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_T7730178827_20111018T1501_noRegion_en-US_print_RC9.09d_for5grb_DatabookPDF
DCN Conference Solutions | Wireless Discussion Units
| 19
DCN‑WDD‑D Wireless Dual
Discussion Unit
Features
Two separate headphone connections with individual
volume control
Useable as single/dual delegate or chairman unit
Separate battery pack, easy to change and charge
Advanced power saving techniques
Low susceptibility to electromagnetic interference
Auto microphone-off
Auto-search for own network
Auto switch-off when out of range
To the participant the most important part of a
conference system is the discussion unit. Bosch has built
on the elegant design of the DCN Next Generation
discussion units to create a new series of wireless
discussion units with unrivalled looks and features.
The DCN‑WDD‑D Wireless Dual Discussion Unit enables
participants to speak, register a request-to-speak, and
listen to the speaker.
Functions
Speech intelligibility
Maximum speech intelligibility is guaranteed at all times.
Operating in the 2.4 GHz (license free) band, the wireless
discussion units produce crystal-clear sound due to a very
high signal-to-noise ratio and antenna diversity. This
means the signal is transmitted along different
propagation paths, ensuring optimal receipt. The system
is also protected against interference from mobile phones
and other equipment that makes use of Bluetooth or
microwave signals.
Security
Wireless communication means extra security
considerations. The DCN Wireless system and discussion
units therefore feature 128‑bits AES encryption to prevent
eavesdropping and unauthorized access. Encryption
ensures the information within the system remains
confidential.
Microphones
A socket is provided to connect the pluggable
microphones which are available in short and long stem
versions (DCN‑MICS and DCN‑MICL, to be ordered
separately).
Headphones and loudspeakers
The unit also accommodates two separate headphone
connections with individual volume control on either side
of the unit, allowing one unit to serve two delegates. It
can be converted to a full dual-use unit by replacing the
microphone button with two separate buttons for
individual microphone control and individual delegate
identification (DCN‑DISBDD dual-use buttons, to be
ordered separately).
To prevent acoustic feedback the built-in loudspeaker is
muted when the microphone is on. If enabled, the
headphones volume is also automatically reduced to
prevent acoustic feedback when the microphone is on.
Rims and buttons
Different rims are available to allow matching with the
interior (DCN‑DISR, to be ordered separately).
The unit can be used as:
a single delegate unit
a dual delegate unit
a chairman unit (DCN‑DISBCM chairman buttons, to
be ordered separately)
a single delegate unit with auxiliary button (to be used
as an usher call, for example).
Battery maintenance
Simple battery maintenance is essential in a wireless
system. A unique feature of Bosch's wireless discussion
units are the separate rechargeable battery packs
(DCN‑WLIION, to be ordered separately). These Lithium-
ion battery packs can be removed and replaced in a
matter of seconds, providing maximum flexibility in
recharge scheduling.
Controls and Indicators
On front
Microphone button with a red or green illuminated
ring (red indicates microphone is active, green
indicates request-to-speak accepted)*
Two individual headphone volume control buttons
On rear
Out-of-range indicator
Battery low indicator
Under base
Recessed ‘De-init’ switch
Mode select switches (delegate, chairman, etc.)
Interconnections
Socket for pluggable microphone
www.boschsecurity.com
Bosch Security Systems
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