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Jumper Settings (JP1, JP2, JP3, JP4)
Open = 0 volts (default)
Short 1-2 = 5V
Short 2-3 = 12V
Note: Most serial devices do not require additional
power through the serial port. Refer to your serial
device's manual for more information. The jumpers
can be removed if the ports do not need power.
Serial Port 3 and 4 Connection
Note: This connection is needed only if port 3 and
4 are needed.
Figure 2. Connecting the ribbon cable
Stripe
3
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