Rainbow-electronics GT864-PY User Manual download pdf (Page 18)

GT864-QUAD/PY Hardware User Guide

1vv0300756 Rev.0 08/05/07

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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

7.3 Antenna precautions

If the antenna is to be mounted outside, consider the risk of lightning. Follow the instructions provided

by the antenna manufacturer.

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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.

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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.

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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.

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Rainbow-electronics GT864-PY User Manual Page 18