Neoway N11 V2 - Network Service AT Commands; Querying Signal Quality (+CSQ)

N11 V2
AT Command Manual
Copyright © Neoway Technology Co., Ltd
25
3 Network Service Commands
3.1 Querying Signal Quality: +CSQ
Description
To check the receiving signal strength indication (RSSI) and the bit error rate (BER)
of the channel
Format
 AT+CSQ<CR>
 AT+CSQ=?<CR>
Parameter
N/A
Return Value
<CR><LF>+CSQ: <signal>,<ber>
<CR><LF>OK<CR><LF>
<signal>: The following table shows the relationship between signal and RSSI:
Signal
RSSI
0
<4 or 99
<-107 dBm or unknown
1
<10
<-93dBm
2
<16
<-81dBm
3
<22
<-69dBm
4
<28
<-57dBm
5
>=28
>=-57 dBm
<ber>:
0...7
Refer to the value of RXQUAL in the table of GSM 05.08 8.2.4.
99
Not known or not detectable
Example
AT+CSQ
+CSQ: 1, 99
OK
Query the current signal strength of
the module.
AT+CSQ=?
+CSQ: (0-31,99),(0-7,99)
OK
Query the range of the module signal
strength.
Remark
N/A