3.5"-eIO-GPA - User Guide, Rev. 1.0
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7.7.
Switches and Jumpers
The product has several jumpers which must be properly configured to ensure correct operation.
Figure 19: Jumper Connector
For a three-pin jumper (see Figure 19), the jumper setting is designated ‘‘1-2’’ when the jumper connects pins 1 and 2.
The jumper setting is designated ‘‘2-3’’ when pins 2 and 3 are connected and so on. You will see that one of the lines
surrounding a jumper pin is thick, which indicates pin No.1.
To move a jumper from one position to another, use needle-nose pliers or tweezers to pull the pin cap off the pins
and move it to the desired position.
7.7.1.
Power Mode Selection (JP3)
The 2.0 mm pitch "Power Mode Selection" jumper (JP3) can be used to specify whether to enable the +12 V controller
in order to determine the system is powered by the power supply from the power input connector (CN14) on the 3.5’’-
eIO-GPA or from the single board computer. It is available only for the variants with the power input connector
(CN14).
Figure 20: Power Mode Selection JP3
Table 17: Pin Assignment JP3
Jumper 1 Position
Description
Pin 1-2
Pin 2-3
X
-
+12V Controller ENABLE (the system is powered by the power supply from CN14)
-
X
+12V Controller DISABLE (the system is powered by the power supply from SBC)
“
X’’ = Jumper set (short) and ‘‘-’’ = jumper not set (open)
2
3
1
