Integrator's Manual GR47/GR48

8. HINTS FOR INTEGRATING THE RADIO DEVICE

LZT 123 7589 R1A

8.2 Installation of the Radio Device

8.2.1 Where to Install the Radio Device

There are several conditions which need to be taken into consideration

when designing your application as they might affect the radio device and

its function. They are:

Environmental Conditions

The radio device 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.

Signal Strength

The radio device 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 radio device is to a

radio base station. You must ensure that the location at which you intend

to use the radio device, 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.

More information about possible communication disturbances can be

found in section 8.3.5, page 59.

When an application is completed, you can verify signal strength by

issuing the AT command AT+CSQ. See the AT Commands Manual for

further details.

7LS Before installing the radio device, use an ordinary mobile telephone to

check a possible location for it. In determining the location for the radio

device and antenna, you should consider signal strength as well as cable

length

Connection of Components to Radio Device

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

radio device or equipment.

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.