Using the MultiTech CDMA Cellular Modem – Application Note #17 – Page 4 of 4
Enter the phone number of the MulitModem in the edit Dialed Using Phone Number, shown in the
Connection Settings group. It should not be necessary to modify the Extra Response Time parameter.
To access the Logger functions simply left double-click on the Control Module, CR10X1, in the Network
Configuration. The Logger functions, Start/Update, Collect, Monitor, etc. are activated by clicking the
toolbar button on the Logger form.
The datalogger may be equipped to dial out on an alarm condition. Please review the MultiLogger
Application Note #14, How to Configure the Alarm Action Outgoing Cell Call, available from the
support area of our website at www.canarysystems.com
Note: Due to some improvements in the communications functions when using cellular modems and
changes in the firmware of the Campbell MCU’s it is strongly advised to use the latest version of
MultiLogger. This can be downloaded from the the support area of our website at
www.canarysystems.com
Troubleshooting
If the connection is not functional you will see timeout errors. To check if the MultiTech MultiModem is
answering the call, simply call the number programmed into it using a standard telephone. You should
hear about three ring tones (with the modem set to answer on 2 rings) after which the modem should
answer. You should then hear the high-pitched carrier detect tone followed by warbling tones indicating
data communication. No ring tones generally means that Verizon Wireless has not set up the service
correctly. No answer generally means the MultiModem has not been configured properly, or correctly
connected to the MCU.
If the modem is answering but MultiLogger is unable to connect then use Hyperterminal to connect
directly. Configure Hyperterminal to use the installed modem of the computer for it’s connection, then
enter the phone number in the Dialing Properties, after dialing and connecting you should be able to
press <ENTER> several times and receive * responses from the MCU. If you cannot receive these
responses then the quality of the connection may be too low to support the communication required or
there may be a problem with the control module in the datalogger. An example of correct response is
shown below.
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