DSB75 Development Support Board Rev. B1 Hardware Description
Confidential / Released
DSB75_hd_v12
Page 77 of 96
2008-08-26
6
Connecting Antenna and GSM Module to DSB75
To prevent mechanical damage, be careful not to force, bend or twist the module. In order to
prevent short-circuits, ensure that the GSM module does not come into contact with any part
of the DSB75.
Connecting TC63, TC65 and MC75 modules:
•
Connect the supplied RF cable to the appropriate RF connector on the GSM module.
•
Plug the opposite end of the RF cable to the Hirose RF jack X505 located on the
component side of DSB75.
•
Connect the 80-pin board-to-board connector of the GSM module to the 80-pin board-to-
board connector X100 of the DSB75.
•
Insert the M2 screws (1) from the bottom side into the small holes of the DSB75 (5).
Push the self-gripping spacers (3) onto the screws as far as possible.
•
Mount the GSM module (4) upside down onto the M2 screws and spacers and secure it
with the M2 nuts (2).
•
Connect the external antenna to the SMA jack X506 of the DSB75.
•
Plug the power cables to the connectors X400 and X401 of the DSB75.
Figure 46: Mounting GSM module (MC75, TC63, TC65) onto the DSB75
The pin assignment of the board-to-board connector can be found in Figure 4 and Table 5.
Figure 47 shows a GSM module (MC75, TC63, TC65) directly seated on the board-to-board
connector of the DSB75.
Connecting AC65, AC75, XT65, XT75 modules:
-
These modules cannot be attached mechanically to the board-to-board connector of the
DSB75. Instead, to properly connect the module either use the supplied additional flat
flexible cable or another suitable adapter.
-
For AC65/AC75 a specific RF antenna cable is necessary.
-
For XT65/XT75 a GPS antenna should be available, for example the supplied active
GPS antenna connected to the module via the supplied adapter cable.
These cables are not part of the standard DSB75 package, but are supplied separately. The
cables for each product type are listed in Section 1.3.2.
