Sierra Wireless RAVEN 20070914 - Manual (Page 150)

Circuit Switch Communications
Rev 3.0B Feb.08 145
a. Verify that the modem Chan, Link and Reg indicators
are blinking in unison confirming that the modem is
now operating in circuit switched (IS‐95) mode.
Note: The dial test should be
completed with the serial cable
disconnected to verify that no
signaling is required by the
modem. b. Dial the Raven modem telephone number from a land
line and verify that the modem automatically answers
the call with modem tones.
c. Verify outgoing calls.
1. Connect the modem to your computer with a
serial cable. Using a terminal emulation program
(HyperTerminal) set up for 9600bps, 8 data bits, no
parity and 1 stop bit.
2. Enter the command: ATD[phone number] . For the
[phone number], enter a known phone number
including the area code for which you can hear
ring (such as your office phone).
14. Commission the Raven Modem on
Site.
The following steps represent a guideline and makes assump‐
tions that the modem has been verified previously in a
controlled environment.
a. Install the Raven modem verifying that all power and
antenna cables are correctly secured.
b. Verify that the Raven modem powers up and that the
Chan, Link and Reg lights blink in unison.
c. Connect the Raven modem to the laptop computer via
a straight through RS232 cable or connect the serial
cable from the modem to a USB to serial device that
has been previously installed on the laptop.
d. Using a terminal emulation program (HyperTerminal)
set up for 9600bps, 8 data bits, no parity and 1 stop bit,
verify the signal strength.
For the Raven C3210: Enter the command: AT!RSSI?.
This will respond back with a signal strength measure‐
ment represented in dBm. The value must be better
than ‐100dBm for the modem to function and it is
strongly recommended that ‐90dBm or better be used
as a minimum value.
For the Raven C3211: Enter the command: AT+CSQ?.
This will respond back with a signal strength measure‐
ment represented on a scale from 0‐31 and second
value separated by a comma. The signal strength value
must be higher than 9 for the modem to function and it