5
6.1
Operation Modes
It is important to note that while it is capable of more advanced operation
through the PPP WAN modes, as shipped from Campbell Scientific Australia,
the modem is configured for use as a normal serial modem.
PPP WAN mode is not supported by Campbell Scientific Australia at this time.
Serial Modem
In this mode, the Intelimax’s extra features are disabled and the modem acts as
any other serial modem. AT commands can be sent from the terminal (data
logger) that will be executed by the modem chipset. Serial modem mode is
recommended only for customer who require Circuit Switched Data
communications.
Serial modem mode can be used when the Intelimax is being used in place of
an older modem such as the Intercel SAM3G+, Modmax or Wavecom
modems.
If Circuit Switched Data is desired, no specific configuration of the logger is
required.
If the Intelimax is being used to replace a Maxon Modmax
modem, note that the Modmax had some custom AT
commands which differ from the normal command set. If the
previous program was sending AT commands to the
modem e.g. for SMS, it will need modification to function
properly. Contact Campbell Scientific Australia for more
information.
7.
Modem LED Functions
The Intelimax has two LED lights used to indicate its operating state. These
can also be used to determine the modem’s signal strength.
All Modem signal strength is commonly calculated using dBm.
These units are received power at the modem, as a power ratio of
received power relative to 1mW. Numbers will always be
negative and a lower negative number indicates stronger signal.
E.g. -85dBm is better than -95dBm.
Note for Modmax Users
Note on Units