Nokia Mobile Phones NSE-5 Series, Service Manual, Page: 271 / 327

PAMS
Technical Documentation
HFU–2 Handsfree Unit
Page 5
Original 11/97
Charging voltage limits within current specifications fulfilled
Conn. / pin Line Symbol Minimum Typical /
Nominal Maximum Unit / Notes
X200 / 7 GND 0 0 0.1 VDC
X200 / 2 +10VA 9.50 10.0 10.55 VDC
X200 / 2 +10VA 11 200 IDC / mA
Conn. / pin Line Symbol Minimum Typical /
Nominal Maximum Unit / Notes
X100 /
5,6,11 GND 0 0 0.1 VDC
X100 / 8,9 V_IN 3 8.5 VDC
X100 / 12 VB 8 16 VDC / car battery
X100 / 12 VB 500 IDC / mA
Audio Specifications, electrical
Minimum Typical /
Nominal Maximum Unit / Notes
Max speaker output power at
distortion=1%, 1 kHz sine 3.0 3.1 W / Rload = 8 ohm
HF–speaker amplifier gain 27 29 31 dB
PSRR, XEAR line –60 –68 dB
CMRR, XEAR–SGND to
speaker –50 –55 dB
HF–mic amplifier gain 27 30 33 dB
Mic level at XMIC–SGND,
(clipping level) 2000 2800 mVpp
Mic distortion at XMIC–
SGND, at Vo = 100 mVrms,
1 kHz 0.15 0.4 %
Noise voltage, HFMIC 5 uVrms psofometric
PSRR, XMIC –60 –67 dB
Crosstalk XEAR–SGND to
XMIC – 55 – 45 dB / electrical, 1kHz