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Getting Started
Check the connection between the USR3500 and the antenna.
Verify the signal strength to determine the received signal strength (Refer to
section 6.2 Verifying the Received Signal Strength).
6.4.
Checking the Band Selection
Using a communication software such as HyperTerminal, enter AT+WMBS? to check
the band selection of the USR3500. Refer to the table below for the list of main
responses returned.
Table 10.
AT+WMBS? Main Reponses
AT+WMBS? Response
AT+WMBS: 0, x
AT+WMBS: 1, x
AT+WMBS: 2, x
AT+WMBS: 3, x
AT+WMBS: 4, x
AT+WMBS: 5, x
AT+WMBS: 6, x
AT+WMBS: 7, x
Where:
When x = 0, the band has not been modified since the last boot of the USR3500;
When x = 1, the band has been modified since the last boot of the USR3500, and
will have to be reset in order to take any previous modification(s) into account.
Enter AT+WUBS? to check the UMTS-FDD band selection.
Table 11.
AT+WUBS? Main Reponses
AT+WUBS? Response
AT+WUBS: y, x
Enter AT+WWSM? to check the existing cellular network status of the USR3500. Refer
to the table below for the list of main responses returned.
Description
Mono band mode 850MHz is selected
Mono band mode extended 900MHz is selected
Mono band mode 1800MHz is selected
Mono band mode 1900MHz is selected
Dual band mode 850/1900MHz is selected
Dual band mode extended 900/1800MHz is selected
Dual band mode extended 900/1900MHz is selected
Quad-band mode 850/900E (extended)/1800/1900MHz is selected
Description
Where:
y = Band frequency configuration (bit field) in HEX format. Refer to the AT
Commands Interface Guide at http://www.usr.com/support/3500.
x = Reset flag (0 means the band(s) have not been modified since the last
boot of the USR3500, and 1 means the band(s) have been modified since
the last boot and that the USR3500 will have to be reset in order to take
any previous modification(s) into account.
Rev 1.1
Communicating with the
USR3500
9/22/14
30
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