![OTE VS 2001 Technical Handbook Download Page 168](http://html1.mh-extra.com/html/ote/vs-2001/vs-2001_technical-handbook_1658302168.webp)
VS 2001
Technical Handbook
Accessories
Page 140
Marconi Proprietary information
P/N: 779-0373/02
Revision 02
The microphone and earphone caracteristics are reported on the following tables:
Tab. A.4:
Handset characteristics
Microphone Characteristic
Type/Value
Type
Electet, whater resistance
Frequency range
200 to 8000 Hz
Power supply
1
÷
10V
Current comsumption
300
µ
A max
Sensitivity
-62 dB ± 2 dB @ 1 KHz
Impedance
3 K
Ω
± 30% @ 1KHz
Operating temperature range
-30°C +60°C
Earphone Characteristic
Type/Value
Frequency range
500 to 3000 Hz
Sensitivity
-91 dB S.P.L.
±
2dB @ 1KHz Re: 20
µ
Pa
Impedance
200 Ohm
±
40 Ohm
Operating temperature range
-30 to +65 °C
The connector used is the same showed in Fig. A.2.