Technical data
63
Additional features in SONNETeas variant
• Acoustic stimulation up to 2000 Hz
• Fully digital hearing aid signal processing
• Independent compressors in up to 7 frequency bands
Audio input
• Via FM Battery Pack Cover
• Hearing aid type three pin connection (Euro Audio) acc. to IEC 60118–12
• Sensitivity: –57.5 dBV
1
(corresponds to 70 dB SPL at 1 kHz)
• Impedance: 4.5 kΩ
1
Controls/Indicators
• ON/OFF switch
• Indicator light: 1 multi-colour LED
Materials
• Mixture of polycarbonate and acrylonitrile-butadiene-styrol polymer (PC/ABS): audio
processor, all colours
• Polyamide (PA): earhook
Temperature and humidity range
Operating temperature range: 0 °C to 50 °C
Storage temperature range: –20 °C to 60 °C
Relative humidity range: 10 % to 93 %
Essential performance
None of the performance characteristics of the SONNET (incl. all accessories) are essential
performance as defined in IEC 60601-1
Radio frequency (RF) link (FineTuner)
Frequency band of reception: 9.07 kHz (±3 %)
Radio frequency link (wireless network)
Frequency band of reception / transmission: 2400 MHz - 2483.5 MHz
Short Range Device (SRD) according to ERC/REC 70-03 Annex 1 (band H)
Receiver category 3
Type of modulation: Gaussian frequency shift keying (GFSK)
Maximum effective radiated power (ERP): 106µW (–9.75 dBm)
1
typical values