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User’s Manual
EBM-APL
User’s Manual
17
2.2 Jumper and Connector List
You can configure your board to match the needs of your application by setting jumpers. A
jumper is the simplest kind of electric switch.
It consists of two metal pins and a small metal clip (often protected by a plastic cover) that
slides over the pins to connect them.
To “close” a jumper you connect the pins with the clip.
To “open” a jumper you remove the clip. Sometimes a jumper will have three pins, labeled 1,
2, and 3. In this case, you would connect either two pins.
The jumper settings are schematically depicted in this manual as follows:
A pair of needle-nose pliers may be helpful when working with jumpers.
Connectors on the board are linked to external devices such as hard disk drives, a
keyboard, or floppy drives. In addition, the board has a number of jumpers that allow you to
configure your system to suit your application.
If you have any doubts about the best hardware configuration for your application, contact
your local distributor or sales representative before you make any changes.
The following tables list the function of each of the board
’s jumpers and connectors.
Jumpers
Label Function Note
JBAT1 Clear CMOS
3 x 1 header, pitch 2.00mm
JRI1
Serial port 1 pin9 signal select 3 x 2 header, pitch 2.00mm
JRI2 Serial port 2 pin9 signal select 3 x 2 header, pitch 2.00mm
JBKL_SEL1 LCD brightness DC/PWM mode select 3 x 1 header, pitch 2.00mm
JCOM_SEL1/2
Serial port 1/2
– RS232/ 422/ 485
mode select
4 x 3 header, pitch 2.00mm
SW1 Multi-function select DIP switch 6pin
Connectors
Label Function Note
CPU_FAN1 CPU fan connector 4 x 1 wafer, pitch 2.54mm
SODIMM1 204-pin DDR3L SODIMM socket