INSYS GSM small 2.0
Functions
11.4
Checking the GSM Signal Quality
You can check the signal field strength at the location of the INSYS GSM small 2.0.
The signal quality has an essential influence on the data transmission speed. If the
signal field strength is too low, the transmission speed can drop severely or the
connection can be terminated at all. The signal field strength is visible for you in
several ways: via HSComm or an AT command.
Configuration with HSComm
In order to open a dialogue window with the current signal field strength,
click on the “Basic Settings” tab in the “GSM Connection” panel the “de-
tect GSM intensity” button.
Configuration with AT commands
In order to display the signal field strength,
use the command
AT+CSQ
The signal quality is indicated in the response by the first figure before
the comma.
Response example
<+CSQ: 13,0>
The following is valid for the signal quality value:
0..10
Poor reception, change location
11..14 Limited
reception
15..31 Good
reception
99 Not
detectable
The value following the comma indicates the bit error rate.
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