User Guide

HE910 Hardware User Guide
1vv0300925 Rev.18 – 15-06-2012
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 55 of 91
Shielding the RF circuitry generally is ineffective because the interference is getting into the GPS
antenna itself, the most sensitive portion of the RF path. The antenna cannot be shielded because then
it can’t receive the GPS signals.
There are two solutions, one is to move the antenna away from the source of interference or the second
is to shield the digital interference to prevent it from getting to the antenna.
The HE910 due to its characteristics of sensitivity is capable to perform a Fix inside the
buildings. (In any case the sensitivity could be affected by the building characteristics i.e.
shielding).
The Antenna must not be co-located or operating in conjunction with any other antenna or
transmitter.
Antenna must not be installed inside metal cases.
Antenna must be installed also according to the Antenna manufacturer instructions.