User`s manual

EM-1240 Hardware User’s Manual EM-1240-DK Functionality
EM-1240-DK Function
The EM-1240 Development Kit is a well-designed PCB board with complete layout. The kit helps
users evaluate, develop, and integrate the EM-1240 Embedded Module into their systems and
applications. Simply combine the EM-1240 Embedded Module with the Development Kit to start
porting the relevant software, and create a solution for the applications you wish to implement.
Refer to the following picture for the basic layout of the EM-1240-DK.
Combining EM-1240-DK with the Embedded Module
Insert the EM-1240 Embedded Module vertically onto the EM-1240-DK. Note that the Pin marked
“JP4” on the Embedded Module must be matched with the Pin marked “JP6” on the EM-1240-DK;
and the Pin marked “JP3” on the Embedded Module must be matched with the Pin marked “JP4”
on the EM-1240-DK. Be careful when installing the board to avoid damaging the pins.
LED Indicators
The following table explains the function of the LED indicators located on EM-1240-DK.
LED Name LED Color LED Function
Power Green Power is on.
Ready Green Power is on and system functions normally.
Green Serial port 1-4 is transmitting data.
P1-P4 (Tx)
Off Serial port 1-4 is not transmitting data.
Yellow Serial port 1-4 is receiving data.
P1-P4 (Rx)
Off Serial port 1-4 is not receiving data.
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