Widex USB LINK - Regulatory Information

20
reGULAtory inForMAtion
ThefollowingTablesummarizesthetechnicaldetailsoftheWidexLinktechnologyasitisimple-
mentedintheCLEAR™hearingaidsandaccessories
Unit USB Link Hearing aid C4-PA
Type W-link W-link
Antenna type Inductive antenna Inductive antenna
Antenna dimensions Ø6 mm
L – 40mm
Ø1.8 mm
L – 4.85mm
Modulation FSK FSK
Magnetic Field Strength -12dB
μA/m
at 10m distance
-54dBμA/m
at 10m distance
Output power 5nW EIRP *) 29pW EIRP *)
Range <30cm between hearing
aid and Widex USB Link
<1m remote unit to
hearing aid.
<30cm between hearing
aids or hearing aid to
Widex Tech Module
Center frequency 10.6MHz 10.6MHz
Channels Single channel radio Single channel radio
Bandwidth 660kHz (-15dB) 660kHz (-15dB)
Data rate 212kbit/s raw channel
capacity
212kbit/s raw channel
capacity
Data flow Simplex or semiduplex Simplex or semiduplex
Protocol Random access
– no collision avoidance.
Random access
– no collision avoidance.
*) EIRP = Equivalent isotropically radiated power