TDK blu2i 用户手册

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4.2 Mounting the blu
2i
 Module onto the application 
platform 
 
There are many ways to properly install the Module in a host device. An 
efficient approach is to mount the PCB to a frame, plate, rack or chassis. 
Fasteners can be M1.8 or M2 screws plus suitable washers, circuit 
board spacers, or customized screws, clamps, or brackets in 2.2mm 
diameter holes. Note that care should be taken to ensure the head of the 
fixing does not interfere with the circuit. Nylon fixings are recommended. 
In addition, the board to board connection can also be utilized to achieve 
better support. 
 
The antenna (Brown square component on top side of PCB) must not be 
influenced by any other PCBs, components or by the housing of the host 
device. The proximity of the antenna to large metallic objects can affect 
the range and performance of the system. Designers should carefully 
consider the location of the module and the type of enclosure material 
that is used. 
 
To prevent mechanical damage, be careful not to force, bend or twist the 
module. Be sure it is positioned flat against the host device. 
 
4.3 Board to Board Connector 
 
This section provides specifications for the 40 way board-to-board 
connector which serves as physical interface to the host application. The 
receptacle assembled on the blu
2i
 Module is type Hirose DF12C. 
 
Item 
Part number 
Stacking height  HRS number 
Receptacle 
on Module 
DF12C-40DS-
0.5V(81) 
3.5mm - 5mm 
CL537-0007-7- 
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