MIX Modem - GSM
User Manual V.1.1
Pag. 17
Subject to change without prior notice
The electrical characteristics are given in the table below.
Function
Signal
name
IO
Parameter
Min.
Typ.
Max.
Unit
Microphone MICP,
MICN
I
DC (no load) at MICP
5.3
5.4
5.6
V
DC at MICP in POWER DOWN
0V
V
DC (no load) at MICN
0
V
DC Resistance differential MICN, MICP
(balanced)
4.6
4.7
4.8
kOhm
Impedance Zi (balanced)
3.9
4.0
4.1
kOhm
Input level Uimax
0.6
VPP
Restricted Input level Uires 7
1.6
VPP
Gain range 6 dB steps
0
42
dB
Frequency Range
200
3900 Hz
fine scaling by DSP (inCalibrate)
-∞
0
dB
Earpiece
EPP,
EPN
O
Impedance (balanced)
8
Ohm
AC output level UO Gain = 0dB @ 3.14
dBm0 no load
5.97
VPP
Gain range
-18
0
dB
Gain accuracy
0.8
dB
Frequency area
200
3900 Hz
DC Offset (balanced)
100
mV
Attenuation distortion for 200...3900Hz
1
dB
Out-of-band discrimination
70
dB
LEAudio
Length of Audio (Handset) cable
3
m
Unless otherwise stated, all specified values are valid for gain setting (gs) 0dB and 1kHz test signal.
gs = 0dB means audio mode = 5, inBbcGain= 0, inCalibrate = 32767, outBbcGain = 0, OutCalibrate =
16384, sideTone = 0.
The electrical characteristics of the voiceband part depend on the current audio mode selected by the
AT command AT^SNFS. See Table 9: Audio modes.
The audio modes 4 and 5 can be adjusted by parameters. Each audio mode is assigned a separate
parameter set.
