Safety Manual

26
DRAFT 2017-07-27
Wireless functionality
The following tables summarizes the technical details of
the wireless technology:
Wireless technology Near󰘰eld magnetic induction
Antenna type Inductive antenna
Antenna dimensions BTE or RIC models:
Ø: 1.9 mm, L: 6.5 mm, respectively,
Ø: 2.3 mm, L: 5.7 mm, respectively,
Ø: 2.8 mm, L: 4.4 mm
Cu󰘵om models:
Ø: 3.3 mm, L: 4.2 mm, respectively,
Ø: 2.0 mm, L: 6.7 mm
Modulation PSK (Phase Shift Key)
Magnetic 󰘰eld
󰘵rength
0.07 A/m, (1 cm
2
coil; average)
Output power (EIRP) 53 μW
EIRP = Equivalent isotropically radiated power
Range < 20 cm between hearing in󰘵ruments
Center frequency 3.28 MHz
Channel Single channel radio
Bandwidth BTE or RIC models: 140 kHz
Cu󰘵om models: 138 kHz
Data rate 324 kbit/sec (raw channel capacity)
Data 󰘱ow Simplex or semi-duplex capability