PC208W, Version 3.3, Instruction Manual
B-1
Appendix B. Modems
B.1 Phone Modems
After adding a new Phone Modem to the Device Map, you can click on the
Hardware Tab | Edit Modem Strings to set up specific parameters related to
the modem. Information for each modem is stored in the WMODEM3.INI file
in the PC208W directory. This file is updated each time a field in the
Hardware page is changed.
The available fields on this set up page are: modem pick list, modem name,
modem reset string, and modem initialization string. Each of these is
explained below.
Modem Pick List
Common modems are available in the Modem Pick List. When a modem is
chosen from the Pick List, the remaining parameter fields are automatically
filled in with default values for that particular modem. These default values
can be changed by editing the desired field.
If the modem you are using is not listed, you can choose <default modem> (or
create a new modem
see Modem Name below) and edit the remaining
parameters according to your modem’s specifications.
Modem Name
A new modem can be created by editing an existing modem name or entering a
new name. You can also remove an entry from the Modem Pick List by
deleting its name from this field and then selecting a new modem as its
replacement.
Modem Reset String
This string is sent to return the modem to a known state. This state is such that
the modem is off-line and ready to receive dialing commands. Usually the
string will set the modem back to factory defaults, but a string to use settings
stored in non-volatile memory can be used once those settings are stored.
Your modem user manual should provide the command to reset the modem to
its factory defaults (often this is &F0, &F1, etc.)
Modem Initialization String
This string is used to prepare the modem for use with the dataloggers and
Campbell Scientific field or voice modems. Typically, these commands enable
flow control, compression, verbal result codes, and error checking.
Summary of Contents for PC208W
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