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Chapter 8: Specifications
68
RIM OEM Radio Modem for GSM/GPRS Wireless Networks
Frequency response (voiceband filter)
Input/output impedance
Signal to (noise + distortion) ratio
0 -100 Hz
max of -34 dB
200 Hz
typ of -1.1
300 - 3350 Hz
min -0.2 dB
max 0.1 dB
3400 Hz
typ of -0.7 dB
4000 Hz
typ of -39 dB
>=4400 Hz
-75 dB
Group
delay
500 - 2500Hz
min 300
µ
max 600
µ
Input
124 kohm
Output
minimum
330 ohm (single-ended)
15 ohm (differential)
maximum
470 pF (single-ended)
100 pF (differential)
Voiceband ADC
minimum
69 dB (PGA=0dB)
typical
77 dB
Voiceband DAC
minimum
47 dB (PGA=0dB)
Содержание 1802G
Страница 6: ...Important safety and compliance information 6 RIM OEM Radio Modem for GSM GPRS Wireless Networks ...
Страница 10: ...10 RIM OEM Radio Modem for GSM GPRS Wireless Networks ...
Страница 12: ...About this guide 12 RIM OEM Radio Modem for GSM GPRS Wireless Networks ...
Страница 24: ...Chapter 2 Getting started 24 RIM OEM Radio Modem for GSM GPRS Wireless Networks ...
Страница 75: ......
Страница 76: ... 2002 Research In Motion Limited Published in Canada ...