At+Csq - Signal Quality - Siemens M1 User Manual

Technical reference section

AT+CSQ - Signal quality

The quality of the radio connection between the GSM module and the base station
varies depending on environmental conditions. This command provides you with infor-
mation on the current reception quality.
Command
AT+CSQ
AT+CSQ=?
Command
Result code
<receive level>
0
1
2...30
31
99
<receive
errors>
99
Example:
Enter:
GSM module:
42
AT+CSQ
Result
Displays current receive values.
Displays a list of values representing receive levels and
receive errors.
AT+CSQ, AT+CSQ=?
AT+CSQ
+CSQ: <receive level>, <receive errors>
-113 dBm or less
-111 dBm
-109... -53 dBm
-51 dBm or greater
Unknown or cannot be detected
(As a percentage): See GSM 05.08, section 8.2.4, Range
of Parameter.
Unknown or cannot be detected
AT+CSQ
+CSQ: 10, 1
OK