SimCom SIM808, Проектирование аппаратного обеспечения

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SIM808_Hardware Design_V1.00 2014.03.27 58
SPK1P/ SPK1N
MIC1P/ MIC1N
±4KV ±8KV
PWRKEY ±4KV ±8KV
Note: It is suggested that customers in serials with 100ohm resistances on UART lines for ESD consideration.
6.10 Radio Characteristics
6.10.1 Module RF Output Power
The following table shows the module conducted output power, it is followed by the 3GPP TS 05.05 technical
specification requirement.
Table 47: SIM808 GSM 900 and GSM 850 conducted RF output power
GSM 900 and EGSM 850
Tolerance (dB) for conditions
PCL Nominal output power (dBm)
Normal Extreme
0-2 39 ±2 ±2.5
3 37 ±3 ±4
4 35 ±3 ±4
5 33 ±3 ±4
6 31 ±3 ±4
7 29 ±3 ±4
8 27 ±3 ±4
9 25 ±3 ±4
10 23 ±3 ±4
11 21 ±3 ±4
12 19 ±3 ±4
13 17 ±3 ±4
14 15 ±3 ±4
15 13 ±3 ±4
16 11 ±5 ±6
17 9 ±5 ±6
18 7 ±5 ±6
19-31 5 ±5 ±6
Table
48
: SIM808 DCS 1800 and PCS 1900 conducted RF output power
DCS 1800 and PCS 1900
Tolerance (dB) for conditions
PCL Nominal output power (dBm)
Normal Extreme