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NPL-1
3 - Audio System
PAMS Technical Documentation
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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
Содержание 6310I - Cell Phone - GSM
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