75NUCLEUS 7 SOUND PROCESSOR USER GUIDE
OTHER iNFORMATiON
Coil
CHARACTERISTIC VALUE/RANGE
Technology Inductive power and data transfer using coupled
resonant coils
Operating voltage 2.0 V to 2.6 V
Data rate 1.25 Mbps (4 CPC), 1 Mbps (5 CPC)
Protocols Cochlear’s proprietary embedded protocol
employing a series of 4 or 5 consecutive pulses
at 5 MHz
Separation between coil
and implant
1-10 mm
Sound processor to implant inductive link
The inductive link between the sound processor coil and the
implant performs two functions: it transfers power from the
sound processor to the implant; and provides a bi-directional
data communication link. Both power and data are transferred
in the reactive near H-field. The link uses a Cochlear
proprietary embedded protocol employing a series of 4 or 5
consecutive pulses clocked at 5 MHz and operates over a
distance of 1-10 mm. Data validity and parity checking is used
to ensure correct data transfer. In the presence of interference,
the sound processor triggers a “coil-off” orange light
indication and the Nucleus Smart App provides a visual
indication that the coil is decoupled from the implant.
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