Rainbow Electronics GM862-QUAD-PY - Manual (Page 64)

GM862-QUAD / PY Hardware User Guide
1vv0300748 Rev. 5 - 20/09/07
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 64 of 68
NOTE: be very careful when connecting the
Telit GM862 module RF connector. The Telit GM862
module RF connector can be damaged if not connected with the proper antenna RF connector. The
minimum number of insertion cycles is recommended.
13.1 Antenna Coaxial Cable Fixing
The following constraints must be respected in the Telit GM862 –QUAD/PY modules antenna cable
connection:
• The fixing point of the coaxial cable must not be placed too close to the antenna connector of the
GM862 module , leaving at least 30mm of flexible cable between the fixed point and the plug end.
• The fixing point must be at the same height of the GM862 module antenna connector, eventually
using a wedge between the PCB and the cable if it is directly fixed to the PCB.
• The flexible cable must never be bent with a radius lower than 25mm (RG174 cable).
• The cable must be a RG174 type or more flexible ones.
The following pictures explain these constraints:
- Angle connector fixing example -