Confidential
MANUAL
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Document number
Revision
7/198 17-LXE 108 566 Uen
A
Note: Any hard copy of this document is for reference only.
Due to template and application dependencies the header and footer may fail to display correct data. It is the
responsibility of the user to ensure that they have a correct and valid version. Any outdated hard copy is invalid and must be removed from possible use.
6 Hints for Integrating the Module
This section, which gives you advice and helpful hints on how to integrate the GM-41 with the application, should
be taken as a guide.
Note!
The circuits on the test board are not shielded. Therefore, take proper precautions for avoiding ESD and
EMI.
6.1 Precautions
Here is a list of preparations that you should make before beginning the integration work that is described in this
section.
•
Where to install the module.
•
Safety
standards
•
SIM
Card
•
Network
and
Subscription
•
Connection of Components to GM-41
•
Antenna
•
Possible
Communication
Disturbances
6.2 Where to Install the Module
•
Make sure that the module is installed so that the environmental conditions, such as temperature, humidity,
vibration, etc., are not beyond the specified limits.
•
Make sure that the signal strength is sufficient. To improve signal strength, move the antenna to another
position. Signal strength may depend on how close the module is to a radio base station. Degradation in
signal strength could be a result of disturbance from another source, for example, an electronic device
nearby.
You can verify signal strength by issuing the AT command AT+CSQ. See the GM-41 AT Command Manual for
descriptions of this and other useful AT commands.
Tip!
Before installing the module, use an ordinary mobile telephone to check a possible location. Consider signal
strength as well as cable length in determining the location for the module and antenna. That way, you will find out
if it is practical to install the module where you intended.
