Fastrack Supreme User Guide
Using the FASTRACK Supreme Plug & Play
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Page: 41 / 77
5.5
Verify the Received Signal Strength
The FASTRACK Supreme establishes a call only if the received signal is sufficiently strong.
To verify the received signal strength, do the following operations:
•
Using a communication software such as HyperTerminal, enter the AT command
AT+CSQ
.
The response returned has the following format:
+CSQ: <rssi>,<ber>
with:
•
<rssi>
= received signal strength indication,
•
<ber>
= channel bit error rate.
•
Verify
the
<rssi>
value returned using the Table 6 below.
Table 6: Values of received signal strength
Value of received signal
strength indication (<rssi>)
Interpretation of the
received signal strength
0 - 10
Insufficient(*)
11 - 31
Sufficient(*)
32 - 98
Not defined
99
No measure available
(*) Based on general observations.
For further information on AT commands, refer to "AT Commands Interface Guide" [6].
5.6
Check the Pin Code Status
To check that the pin code has been entered, use a communication software such as a HyperTerminal, then
enter
AT+CPIN?
command.
The table below gives the main responses returned:
Table 7: AT+CPIN Responses
AT+CPIN response (*)
Interpretation
+CPIN: READY
Code PIN has been entered
+CPIN: SIM PIN
Code PIN has not been entered
(*)For further information on the other possible responses and their meaning, refer to "AT Commands
Interface Guide" [6].
5.7
Switch between EU/US Band(s)
To switch between EU/US band(s) for the FASTRACK Supreme, use a communication software such as a
HyperTerminal, then enter
AT+WMBS=<band>[,<param>]
command.
The table below gives the commands for various band(s) selection:
