MTX-HSPA-PH8-P+G
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www.matrix.es
2014/11 v2.0
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MTX Terminals® by MATRIX ELECTRONICA S.L.U
8.
Modem installation
This chapter gives you advice and helpful hints on how to integrate the MTX-HSPA-PH8-P+G Modem
into your application from a hardware perspective.
8.1
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:
8.1.1
Environmental conditions
The modem must be installed so that the environmental conditions stated in the Technical Data
chapter such as temperature, humidity and vibration are satisfied.
Additionally, the electrical specifications in the Technical Data section must not be exceeded.
8.1.2
Signal strength
The modem has to be placed in a way that ensures sufficient signal strength. To improve signal
strength, the antenna can be moved to another position. Signal strength may depend on how close
the modem is to a radio base station. You must ensure that where you intend to use the modem is
within the network coverage area. Degradation in signal strength can be the result of disturbance
from another source; for example, an electronic device in the immediate vicinity. More information
about possible communication disturbances can be found in
section 9.3.5
.
When an application is completed, you can verify the signal strength by issuing the AT command
AT+CSQ.
Tip!
Before installing the modem, use an ordinary mobile telephone 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.
8.1.3
Connections of components to MTX-HSPA-PH8-P+G Modem
The user is responsible for the final integrated system. If not correctly 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.
8.1.4
Network and subscription
Before your application is used, you must ensure that your chosen network provides the necessary
telecommunication services. Contact your service provider to obtain the necessary information.
•
If you intend to use SMS in the application, ensure this is included in your (voice)
subscription.
•
Consider the choice of supplementary services
