Installation Instructions

PEOPLE FIRST
Oticon A/S Kongebakken 9 DK-2765 Smørum www.oticon.com
Main [phone] Fax [phone] Denmark CVR-no. 42334219 1
Oticon Radio Model - Quick Installation Guide
Radio Model Name: WLP Special
The WLP Special Radio Module is a module intended for WireLess Programming devices (WLPs) and completely equipped with both a microprocessor host and a
short range low power radio system on board the same Printed-Circuit-Board (PCB). Besides the host and the radio system the module also includes a power
management circuit, EEPROM memory, USB connector, battery connector, two neck loop connectors and small discrete components.
When the WLP Special radio module is mounted inside plastic shells for a wireless
programming device with a neck loop antenna attached, then the whole product shall
normally be placed on the neck of an end user with one or two wireless hearing aids on the
ears, also running at a radio frequency of 3.84 MHz. The end product shall be operated by a
trained hearing care professional via a PC with Oticon certified SW controlling the product
through an USB cable.
The radio system inside the module is a low power, inductive radio transceiver working at
3.84 MHz and consisting of (see illustrations next page):
- A radio transmitter controller
- A radio receiver circuit
- A frequency generating circuit and
- A 16 MHz crystal
The low power, inductive radio transmitter is consisting of a Complex Programmable Logic
Device (CPLD) fed with data from the host, a clock oscillator and two switching transistors
feeding the modulated RF signal at 3.84MHz to a dedicated neck loop antenna.
The module mounted inside a plastic shell and with its loop antenna attached is depicted to
the right:
NB: The WLP Special radio module is ONLY intended for Oticon and OEM branded products intended for wireless programming of hearing aids at
3.84 MHz. If used for other types of products or systems, Oticon cannot guarantee continued conformance with FCC part 15 regulations. Because of
this and due to limited shielding of the module, the WLP Special radio module is only approved with a limited modular approval.