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参数资料
| 型号： | DR-TRC103-915-EV |
| 厂商： | RFM |
| 文件页数： | 46/65页 |
| 文件大小： | 0K |
| 描述： | BOARD EVALUATION 915MHZ RFM RFIC |
| 标准包装： | 1 |
| 类型： | 收发器，SRR |
| 频率： | 902MHz ~ 928MHz |
| 适用于相关产品： | TRC103-915 |
| 已供物品： | 2 个板，天线，电池 |
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J must be an integer value, so F CBW is limited to 16 discrete values. If the value of J given in the above equation is
not an integer for your deviation and bit rate, round the value of J down to the nearest integer and use this value
to set the bandwidth of the receiver Butterworth filters for the bit rate you are using. For operation at 133 kb/s and
above, use a value of 15 for J.
The recommended 3 dB bandwidth for the receiver R-C filters is:
F CRC = 3.25*F CBW
Where F CRC and F CBW are in kHz. The bandwidth of F CRC is set by bits 7..4 in RXCFG10 . The relationship of the R-
C filter bandwidth to the integer value in RXCFG10 bits 7..4 is given in Table 55. Where the calculated value for
F CRC falls between table values, use the higher table value. For operation at 100 kb/s and above, use the 987 kHz
R-C filter bandwidth.
Pattern of Bits 7..4
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
R-C Filter Bandwidth
65 kHz
82 kHz
109 kHz
137 kHz
157 kHz
184 kHz
211 kHz
234 kHz
262 kHz
321 kHz
378 kHz
414 kHz
458 kHz
514 kHz
676 kHz
987 kHz
Table 55
6.2.2 Determining Transmitter Power Configuration Values
European ETSI EN 300 220-1 regulates unlicensed fixed-frequency and FHSS radio operation in the 863-
870 MHz band. A TRC103 transmitter power setting of 10 dBm can be used anywhere in this band, operating on
either fixed-frequency or FHSS. Refer to EN 300 220-1 for additional details.
FCC 15.247 and Canadian RSS-210 A8.1 regulate unlicensed FHSS radio operation in the 902-928 MHz band.
The TRC103’s maximum transmitter power setting of 11 dBm can be used under both regulations.
FCC 15.249 and Canadian RSS-210 A2.9 regulate fixed-frequency unlicensed radio operation in the 902-928
MHz band. Under 15.249, the allowed transmitter field strength measured at 10 ft is 50,000 μV/m. This level
equates to a transmitter power level of approximately 1 dBm for a 1/4 wave antenna of typical efficiency.
The relationship of the transmitter power level to the integer value in TXCFG1A bits 3..1 is given in Table 56.
There are six available power settings (approximate):
www.RFM.com E-mail: info@rfm.com
? 2009-2010 by RF Monolithics, Inc.
Technical support +1.800.704.6079
Page 46 of 65
TRC103 - 11/29/12
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