EG_GenPro53e_1040_UG_003_UK
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Descriptions and non-contractual illustrations in this document are given as an indication only.
ERCO&GENER reserves the right to make any modifications
To check the quality of the GSM signal, do the following operations:
Use a communication software like Hyperterminal, enter the command
AT+CSQ
.
The response is in the following format:
+CSQ : <rssi>, <ber>
with:
<rssi>
= indicates the reception level,
<ber>
= receive bit error rate.
Check the returned value
<rssi>
with the help of the table below.
<rssi>
value
Gain in dbm
Interpretation
<ber>
value
Interpretation
0
-113 dbm
Insufficient
0 to 7
See standards ETSI
GSM 05.08
1 to 10
-111 to -95 dbm
Insufficient
11 to 30
-93 to -53 dbm
Sufficient
31 (max)
-51dbm
Perfect
99
Unknown/not detectable 99
Unknown/not detectable
The GSM modem works normally with a minimum
<rssi>
between 11 and 15.
Bellow 10, the signal level is insufficient; the modem cannot work depending on the geographical situation or
the vehicle mobility. Above 15, the signal is sufficient.
For more information about AT commands, see the document "EG_EGM_CL_xxx_yy" of ERCO & GENER.
5.6 Verification of the PIN code
The modem contains the EGM standard library (see the documents
"EG_EGM_CL_xxx_yy" of ERCO &
GENER) in this case, the PIN code is essential in order to make a call or to accept a response coming from
the GSM network. This code is held in the SIM card and can be modified by the user.
To check that the PIN code has been entered, use a communication software like Hyperterminal, and enter
the command
AT+CPIN?
The table below shows the main responses given by the modem:
Command
Response
Interpretation
AT+CPIN?
+CPIN : ERROR
The SIM card is absent or not
recognized
+CPIN : READY
The PIN code is correct
+CPIN : SIM PIN
The PIN code is wrong or not entered
yet
+CPIN : SIM PUK
The PUK code is required
For more information about AT commands, see the document "EG_EGM_CL_xxx_yy" of ERCO & GENER.
