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4. SAFETY AND PRODUCT CARE
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LZT 123 7361 R1B
• Ensure the d.c. cable, supplying power to the GM29, does not
exceed 3 metres. For longer distances please contact Sony Ericsson
Service and Support.
• To protect power supply cables and meet the fire safety requirements
when the unit is powered from a battery or a high current supply,
connect a fast 1.25A fuse in line with the positive supply.
• Do not connect any incompatible component or product to the
GM29.
Note! Sony Ericsson may refuse warranty claims where evidence of product
misuse is found.
4.3 SIM Card Precautions
• Before handling the SIM card in your application, ensure that you
are not charged with static electricity. Use proper precautions to
avoid electrostatic discharges.
• When the SIM card hatch is opened, the SIM card connectors lie
exposed under the SIM card holder.
Caution! Do not touch these connectors! If you do, you may release an electrical
discharge that could damage the modem or the SIM card.
• When designing your application, the SIM card’s accessibility
should be taken into account. We always recommend that you have
the SIM card protected by a PIN code. This will ensure that the SIM
card cannot be used by an unauthorized person.
4.4 Antenna Precautions
• If the antenna is to be mounted outside, consider the risk of
lightning. Follow the instructions provided by the antenna
manufacturer.
• 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.