LT910-WW User Manual - Telic AG
Pg 27
6 Installation of the modem
This chapter gives you advice and helpful hints on how to integrate the LT910-WW terminal into
your application from a hardware perspective. Please read the information given in Section 2
“Product Description” and then read the information in this section before starting your
integration work.
6.1 Where to install the modem
There are several conditions which need to be taken into consideration when designing your
application as they might affect the modem and its function. They are:
6.1.1 ENVIRONMENTAL CONDITIONS
The modem must be installed so that the environmental conditions stated in Section 2.4 “Product
Features and Technical Data”, such as temperature, humidity and vibration are satisfied.
Additionally, the electrical specifications in Section 2.4 “Product Features and Technical Data”
must not be exceeded.
6.1.2 WWAN SIGNAL STRENGTH
The modem must be placed to ensures sufficient WWAN coverage. To improve signal strength,
the antenna can be moved to a different position. Signal strength depends on how close the
modem is to a radio base station. You must ensure that the location at which you intend to use
the modem is within the network coverage area. Degradation in signal strength can be the result
of a disturbance from another source, for example an electronic device in the immediate vicinity.
To verify the current signal strength issue the command AT+CSQ.
Before installing the modem, use an ordinary mobile telephone, with the modems SIM
card, to check a possible location for it. In determining the location for the modem and
antenna, you should consider signal strength as well as cable length.
6.1.3 CONNECTION OF COMPONENTS TO THE LT910-WW TERMINAL
The integrator is responsible for the final integrated system. Incorrectly designed or installed
external components may cause radiation limits to be exceeded. For instance, improperly made
connections or improperly installed antennas can disturb the network and lead to malfunctions
in the modem or equipment.
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