3
Rear Panel
AC Mains
AC Mains input to the universal switched-mode power supply, operates over a wide range of AC input voltages from
100V to 240V, 50/60Hz�
Locate
Pressing the Locate switch on the rear of the unit will illuminate the PWR LED on the front and identify the device
within Audio Architect� Similarly the switch will illuminate if the device is located from within Audio Architect�
RS232
Serial port for connection of external control equipment�
Ethernet
The main connection for the proprietary system control network, and for third-party Ethernet control�
BLU link
The London BLU link is a point-to-point digital audio bus with 256 audio channels at 48K sample rate or 128 audio
channels at 96K sample rate� The BLU-103 allows access to channels 1-48 of this bus, at 48K sample rates� The
physical connection is made with Cat 5e cable from the OUT port of one device to the IN port of another device�
The devices are connected in a daisy chain fashion continuing with the OUT port of one device connected to the
IN port of the next device� Redundancy can be provided by completing the loop and connecting the OUT port from
the last device to the IN port of the first device in the chain. All devices connected in the London BLU link chain
must be configured for the same audio sample rate.
GPIO Ports
The General Purpose Input and Output (GPIO) ports can be used to interact with
external potentiometers, contact closures, LEDs, and relays� See “Control Inputs” on
page 5, “Logic Outputs” on page 6, and ”Opto Output” on page 6 for
further information on these ports�
VoIP Jack
The BLU-103 has two VoIP in/out (TX/RX) channels via a VoIP jack� This RJ-45 jack allows
connection to a standard VoIP network�
The BLU-103 has AEC capabilities which enable it to cancel acoustic echo arising when sound
from a loudspeaker enters a microphone in the same room in a conference application�
The BLU-103 contains dedicated AEC processing for up to 8 independent AEC algorithms� The
AEC algorithm can be applied to signals coming from the local analog inputs or from the digital
audio bus� 8 individual AEC references (one per algorithm) allow the user to provide a solution for
multiple conferencing spaces using a single device
Automatic Gain Control (AGC) and Noise Cancellation (NC) are also provided per AEC algorithm� AGC ensures that
microphone levels remain at an optimum level, and NC removes steady state noise (such as from a projector fan or
air conditioning device) from the signal path�
Non-Linear Processing (NLP) dynamically adjusts to minimize echo caused by under or over-cancellation�
Analogue Input/Output Connections
There are 8 analogue input connections and 8 analogue output connections� The analogue connections are
balanced, on Phoenix/Combicon connectors�
Summary of Contents for BSS Soundweb London BLU-103
Page 1: ...Soundweb TM London BLU 103 Installation Guide 5054331 A ...
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