Oticon A S CL2STRM Installation guide

Audio Streaming Module and its ferrite coil antenna in a plastic frame (Top side)

Audio Streaming Module in a plastic frame (Bottom side)

PEOPLE FIRST

Oticon Radio Model - Quick Installation Guide

Radio Model Name: Audio Streaming Module

The Audio Streaming Module is an accessory board completely equipped with both a microcontroller host and two radio systems on board the same Printed­Circuit-Board (PCB). Besides the host and the radio systems the module also includes a Digital-Signaling-Processor (DSP), an audio codec, a power management
circuit, flash memory, a tele coil and small discrete components.

The two radio systems are

- a low power, inductive radio transmitter wor king at 3.84 MH z

(including no active receiver) and

- a 2.4GHz radio transceiver, which is intended both for

proprietary use and compatible with Bluetooth enabled wireless
accessories, such as wireless headsets and mobile phones.

The low power, inductive radio transmitter is consisting of a Complex
Programmable Logic Device (CPLD) fed with data from the host, an RC
clock oscillator a nd two H-bridges feeding the modulated RF signal at

3.84MHz to a dedicated ferrite coil antenna (its connector can be seen in
the bottom side drawing to the right). The CPLD can also transmit the
RF signal via an external and dedicated neck loop antenna in stead of
the internal coil antenna. (The neck loop is attached through two holes
in the plastic frame to dedicated springs on the PCB, which can be seen
in the top side drawing to the right).

The 2.4 GHz t ransceiver is consisting of a completely integrated radi o
transmitter and receiver inside a Bluetooth chip from Cambridge Silicon
Radio (CSR). The BT chip feeds its RF signal to a dedicated PCB
antenna onboard (see drawings next page). The Bluetooth chip is
controlled by the μcontroller host, and audio data between the two chips
is handled by the DSP.

The module mounted with its dedicated ferrite coil antenna in a plastic
frame is depicted to the right:

Oticon A/S Kongebakken 9 DK-2765 Smørum www.oticon.com
Main [phone] Fax [phone] Denmark CVR-no. 42334219

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Audio Streaming Module PCB (Top side)

Audio Streaming Module PCB (Bottom side)

PEOPLE FIRST

Oticon Radio Model - Quick Installation Guide

Radio Model Name: Audio Streaming Module

The Audio Streaming Module with all its mounted components is intended to be installed as a module into Oticons wireless accessory devices, commonly referred
to as the ConnectLine products (e.g. the Streamer Pro).

The module requires only a battery to be mounted
together with its ferrite coil antenna in an external
plastic shell (as shown on the previous page). The
two microphones of the module are mounted onboard
its PCB and the module requires no speaker as all
sound is streamed wirelessly to any connected
devices (e.g. Oticons wireless hearing aids and/or
mobile phones).

The module has its power management subsystem
including all voltage regulators and the charging
circuit on board. Also all

data interfaces (input-

output) on the board are buffered.

The module PCB is depicted to the right with its
main components and connections:

Oticon A/S Kongebakken 9 DK-2765 Smørum www.oticon.com
Main [phone] Fax [phone] Denmark CVR-no. 42334219

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