DSB75 Development Support Board Rev. B1 Hardware Description
Confidential / Released
DSB75_hd_v12 Page 57 of 96 2008-08-26
3.13 Antenna Interface
The RF signal of the GSM module is connected via the supplied RF adapter cable to the
Hirose RF jack X505 located on the DSB75. Furthermore, in order to send or receive data,
connect an external RF antenna to the SMA jack X506 which is internally connected to the
Hirose RF connector X505. The RF antenna cables are product specific, please refer to
Section
1.3.2.
To obtain optimum send and receive performance, a steel grounding plate (at least 300mm x
300mm) should be placed underneath the antenna.
Please consider that the supplied antenna equipment has been chosen to achieve optimum
RF performance when operating the GSM module at the DSB75. Cinterion does not accept
warranty claims for damage caused by inappropriate equipment connected to the antenna
connectors.
Electrical characteristics are specified in section
8.
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