User's Manual

LZT 123 1836 82
Like any mobile station, the antenna of the wireless modem emits radio frequency
energy. To avoid EMI (electromagnetic interference), users must determine whether
the application itself, or equipment in the application’s proximity, requires further
protection against radio emission and the disturbances it might cause. Protection is
secured either by shielding the surrounding electronics or by moving the antenna
away from the electronics and the external signals cable.
The wireless modem and antenna may be damaged if either come into contact with
ground potentials other than the one in the users application. Beware, ground
potential are not always what they appear to be.
In the final application, the antenna must be positioned more than 20 cm away from
human bodies. When this rule cannot be applied, the application designer is
responsible for providing the SAR measurement test report and declaration.
Even if SAR measurements are not required, it is considered good practice to insert a
warning in any manual produced, indicating it is a radio product and that care should
be taken.
7.4 Installation of the Wireless modem
7.4.1 Where to Install the Wireless modem
There are several conditions which need to be taken into consideration when
designing your application as they might affect the wireless modem and its function.
They are:
7.4.1.1 Environmental Conditions
The wireless 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.