AT+CSQ指令 AT+CSQ指令用来显示信号强度,这个信号强度其实就是RSSI。 该指令的输出范围是0~99,具体的功率值如下: valueRSSI dBm Condition 0 -113 Marginal 1 -111 Marginal 2 -109 Marginal 3 -107 Marginal 4 -105 Marginal 5 -103 Marginal 6 -101 Marginal 7 -99 Marginal 8 -97 Marginal 9 -95 Marginal 10 -93 OK 11 -91 OK 12 -89 OK 13 -87 OK 14 -85 OK 15 -83 Good 16 -81 Good 17 -79 Good 18 -77 Good 19 -75 Good 20 -73 Excellent 21 -71 Excellent 22 -69 Excellent 23 -67 Excellent 24 -65 Excellent 25 -63 Excellent 26 -61 Excellent 27 -59 Excellent 28 -57 Excellent 29 -55 Excellent 30 -53 Excellent 31 -51 Excellent 99 not known or not detectable 我在有室分的办公室里面测得的CSQ大致为15~19,属于good水平。 |
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