Nokia 8850 Manual Do Serviço
NSM–2
UI Module
PAMS Technical Documentation
Page 15
Issue 1 12/1999
Nokia Mobile Phones Ltd.
Microphone
The internal microphone is placed to slide. Microphone is OMNI direction-
al. The microphone requires a bias current to operate. The bias current is
generated from VCOBBA supply with a transistor. EMC protection parts
are implemented partly in slide and partly on motherboard.
al. The microphone requires a bias current to operate. The bias current is
generated from VCOBBA supply with a transistor. EMC protection parts
are implemented partly in slide and partly on motherboard.
Pin
Name
Min
Typ
Max
Unit
Notes
X300/2
MICP
0.55
4.1
mV
Connected to COBBA MIC2N input.
The maximum value corresponds to1
kHz, 0 dBmO network level with input
amplifier gain set to 32 dB. typical val-
ue is maximum value – 16 dB.
The maximum value corresponds to1
kHz, 0 dBmO network level with input
amplifier gain set to 32 dB. typical val-
ue is maximum value – 16 dB.
X300/1
MICN
0.55
4.1
mV
Connected to COBBA MIC2P input.
The maximum value corresponds to1
kHz, 0 dBmO network level with input
amplifier gain set to 32 dB. typical val-
ue is maximum value – 16 dB.
The maximum value corresponds to1
kHz, 0 dBmO network level with input
amplifier gain set to 32 dB. typical val-
ue is maximum value – 16 dB.