Nokia 6310i - Page 94

NPL-1
3 - Audio System PAMS Technical Documentation
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7DEOHHDC-9P interface specifications
Object Specification Notes
Receiver input impedance 150 Ohm +/- 25 % @ 390 mV at 1 kHz
Maximum Sound pressure level 106 dB SPL at 1 mW
Transmitter output impedance 2200 Ohm +/- 30 % at 1 kHz
Transmitter sensitivity - 43.5 dBV/Pa +/- 3 dB at 1 kHz
XMIC bias voltage 1.5 V Typical
XMIC bias current 1.5 mA Maximum
7DEOHSelected specifications for HDW-1 BT Headset
Min Typ Max Unit
Ear signal in Codec after PCM DAC converter 80 490 mVrms in codec
Ear signal amplifier gain in codec -18 2 12 dB / setting by 2 dB steps
Electroacoustic transfer function (Rx) 17 dBPa/V/0.5m
Microphone signal level 3 4 6 mV/Pa
Level at AD input in Codec 58 490 mVrms in codec
Mic. amplifier gain in codec 20 42.5 dB
Noise voltage, microphone 5 uVrms