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100 101
Wireless functions and operating characteristics
The following tables summarizes the technical details of the wireless
technology:
Technical details Inductive radio Bluetooth (LE)
Antenna type Integral coil
antenna
Inductive antenna
Antenna dimensions Ø 2 mm
L: 5 cm
Ø1 .8 mm x 4.5 mm
Modulation FSK FSK
Magnetic Field Strength -54dBμA/m @
10 m
-54dBμ A/m at
10m distance
Output power (EIRP) 0 dBm / 1 mW
Range 0.3 m 6 m
Center frequency 10.6MHz 2401 MHz -
2480 MHz
Channels Single channel 40
Bandwidth 660kHz 2 MHz
Data rate 212 kbps 1 Mbps
Data flow Simplex/Semi
Duplex
Duplex
Protocol Random Access
– Proprietary
BLE
Wireless Security Measures
Security of the wireless signals is assured through device system design
that includes:
• Individual MAC address for each unit which is checked during each
transmission.
• A built-in pairing table which specifies valid and legitimate pairing
among units
• A proprietary Widex communication protocol which checks the package
numbers during each transmission.
• A Cyclic Redundancy Check (CRC) to check data validity and correct
errors.
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