Specifications

Telit GM862-PCS/-GPRS/-GSM Product Description

1vv0300604, Rev. ISSUE#14 - 22/01/04

2.16 Mounting the GM862-GPRS on your Board

In order to electrically connect your board to the Telit GM862-GPRS module, use a CSTP 2x25 pin

vertical SMD SCH–SCH Molex 53748 - 0504 (female, low profile) as a counterpart to the CSTP

50 pin vertical SMD Molex 52991–0508 (male) of your Telit GM862-GPRS module.

When mounting the Telit GM862-GPRS module on your board, take care of soldering the GM862-

GPRS shielding reeds on a ground plane or signal.

NOTE: be very careful when connecting the Telit GM862-GPRS module RF connector. The

Telit GM862-GPRS module RF connector can be damaged if not connected with the proper

antenna RF connector. The minimum number of insertion cycles is recommended.

2.16.1 Antenna Coaxial cable fixing

The following constraints must be respected in the Telit GM862-GPRS antenna cable connection:

- The fixing point of the coaxial cable must not be placed too close to the antenna connector of the

GM862-GPRS, 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-GPRS 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 -