The processing unit comprises:
•
Two omni-directional microphones for receiving sound.
•
An internal telecoil for receiving magnetic fields radiated by
phones, neckloops and roomloops (optimised for phone use).
•
Custom analogue and digital integrated circuits with digital signal
processing (DSP) and bi-directional wireless communication
capabilities.
•
A dual-colour light emitting diode (indicator light) for visual
indication of processor function or processor problem.
•
Two push-buttons to allow user control of key features.
•
Custom 4-pin accessory connector for connection of audio
accessories (e.g. Personal Audio Cable).
•
Custom 4-pin coil connector for connection of the coil cable.
•
A range of earhooks.
The batteries provide power to the processor. The following options are
available for powering the processor:
•
Two disposable batteries.
•
Rechargeable battery module.
The coil acts as a transformer coupling that transfers energy and data
information to the implant. It is connected to the processing unit by
the coil cable. The coil cable is a separate cable, which can be detached
from both the coil and the processing unit. It is connected to both
the coil and the processing unit by custom 4-pin connectors. The
connection forms a seal to prevent moisture ingress.
Materials
•
Processing unit is made of polyester.
•
Battery modules (all types) are made of polyester.
•
Coil is made of elastomer. The coil cable is made of polypropylene,
elastomer and PVC.
•
LiteWear Cable is made of polyester, elastomer and PVC.
•
LiteWear Retention Case is made of polyamide.
•
LiteWear Fixing Aids are made of polycarbonate.
92 - CP810 Sound Processor User Guide
© Cochlear Limited 2015
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