Circuit Switch Communications
Rev 3.0B Feb.08 150
a. Veri fythatthemodemChan,LinkandRegindicators
areblinkinginunisonconfirmingthatthemodemis
nowoperatingincircuitswitched(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. DialtheRavenmodemtelephonenumberfromaland
lineandverifythatthemodemautomaticallyanswers
thecallwithmodemtones.
c. Veri fyoutgoingcalls.
1. Connectthemodemtoyourcomputerwitha
serialcable.Usingaterminalemulationprogram
(HyperTerminal)setupfor9600bps,8databits,no
parityand1stopbit.
2. Enterthecommand:ATD[phone number].Forthe
[phonenumber],enteraknownphonenumber
includingtheareacodeforwhichyoucanhear
ring(suchasyourofficephone).
14. Commission the Raven Modem on Site. Thefollowingstepsrepresentaguidelineandmakesassump‐
tionsthatthemodemhasbeenverifiedpreviouslyina
controlledenvironment.
a. InstalltheRavenmodemverifyingthatallpowerand
antennacablesarecorrectlysecured.
b. Veri fythattheRavenmodempowersupandthatthe
Chan,LinkandReglightsblinkinunison.
c. ConnecttheRavenmodemtothelaptopcomputervia
astraightthroughRS232cableorconnecttheserial
cablefromthemodemtoaUSBtoserialdevicethat
hasbeenpreviouslyinstalledonthelaptop.
d. Usingaterminalemulationprogram(HyperTerminal)
setupfor9600bps,8databits,noparityand1stopbit,
verifythesignalstrength.
FortheRavenC3210:Enterthecommand:AT!RSSI?.
Thiswillrespondbackwithasignalstrengthmeasure‐
mentrepresentedindBm.Thevaluemustbebetter
than‐100dBmforthemodemtofunctionanditis
stronglyrecommendedthat‐90dBmorbetterbeused
asaminimumvalue.
FortheRavenC3211:Enterthecommand:AT+CS Q? .
Thiswillrespondbackwithasignalstrengthmeasure‐
mentrepresentedonascalefrom0‐31andsecond
valueseparatedbyacomma.Thesignalstrengthvalue
mustbehigherthan9forthemodemtofunctionandit