DC3500 AT Commands Manual 500242R01 ... - Cooking Hacks

DC3500 AT Commands Reference Manual 500242R017.6. Signal quality +CSQDescriptionThis execution command returns signal strength indication and channel bit error rate from the ME.The radio signal strength will be also used to build and display the indicator “signal” i.e. signalquality in the response code +CIND and in the unsolicited result code +CIEV.The following mapping of “signal” to exists:“signal” - 0 < 4 or 99 (< -107 dBm or unknown)- 1 < 10 (< -93 dBm)- 2 < 16 (< -71 dBm)- 3 < 22 (< -69 dBm)- 4 < 28 (< -57 dBm)- 5 >=28 (>= -57 dBm)SyntaxCommand syntax: AT+CSQResponse syntax: CSQ: ,CommandPossible response(s)AT+CSQ +CSQ: 2,5OKorTest commandAT+CSQ=?Defined values range for GSM:- 0 i.e. -113dBm or less- 1 i.e. -111 dBm- 2 ... 30 i.e -109 ... -53 dBm- 31 -51 dBm or greater- 99 i.e. not known or not detectable range for UMTS:- 0 not known or not detectable- 1 /* -115 dBm */- 17 /* -99 dBm */- 25 /* -91 dBm */- 33 /* -83 dBm */- 41 /* -75 dBm */- 49 /* -67 dBm */- 57 /* -59 dBm */- 65 /* -51 dBm */- 91 /* -25 dBm */CME ERROR: +CSQ: (0-31,99),(0-7,99)i.e. list of supported s andlist of supported sOK bit error rate range for GSM:- 0 ... 7 as RXQUAL values as described in GSM05.08 chapter 8.2.4- 99 not known or not detectable bit error rate range for UMTS: 0 ... 49 RXQual value as defined in 25.133 / 9.1.2.3 CPICH Ec/Iomeasurement report mapping:CPICH Ec/Io ≤ -24 dB-24 ≤ CPICH Ec/Io < -23.5 dB-23.5 ≤ CPICH Ec/Io < -23 dB… … …-1 ≤ CPICH Ec/Io < -0.5 dB-0.5 ≤ CPICH Ec/Io < 0 dB0 ≤ CPICH Ec/Io dBConfidential DAVISCOMMS (S) PTE LTD 54 /136