User guide

WM_PRJ_M12_UGD_001 - 002
18th September 2003
confidential ©
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des tiers sans son autorisation préalable.
3.3.2.3 External antenna
The external antenna is connected to the modem via the SMA connector.
The external antenna must fulfill the characteristics listed in the table below.
Table 6: External antenna characteristics
Antenna frequency range Dual-band GSM 900/DCS 1800 MHz
Impedance 50 Ohms
Gain (antenna + cable) 0 dBi
VSWR (antenna + cable) -10 dB
Note: refer to chapter 8 for recommended antenna.
3.3.3 SIM card
Table 7: SIM card characteristics
SIM card 3V or 5V
3.3.4 Audio interface
The audio interface is available through the Sub HD 15-pin connector.
The following table provides electrical information of the audio interface for
handset.
Table 8:
Audio interface characteristics for handset
For GSM 900/DCS 1800 Min Typ Max Unit
Microphone input voltage at
minimum gain
43.8 mVrms
Speaker output voltage at
maximum gain
1.74 Vrms
Speaker impedance 32 50
Ω