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Owner’s Manual Rev 1.0 Page 41 of 41
Never connect more than one modem to a single antenna. The
modem can be damaged by radio frequency energy from the
transmitter of another modem.
Like any mobile station, the antenna of the modem emits radio
frequency energy. To avoid EMI (electromagnetic interference),
you must determine whether the application itself, or equipment
in the application’s proximity, needs 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 modem and antenna may be damaged if either come into
contact with ground potentials other than the one in your
application. Beware, ground potential are not always what they
appear to be.
If the application containing the TT4031 (SE-GM29) uses an
antenna which is less than 20cm away from any part of the
user’s body, integrators are legally obliged to publish SAR
figures for the product. SAR testing is the responsibility of the
system integrator.
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.
The TT4031 (SE-GM29) module is FCC approved for fixed and
mobile applications. If the final product after integration is
intended for portable use, a new application and FCC ID is
required.