IBASE SI-304 - Manual (Page 19)

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11 IBASE Technology Inc.
2.3 Setting the Jumpers
Jumpers are used on MBD304 to select various settings and features according to
your needs and applications. Contact your supplier if you have doubts about the best
configuration for your needs. The following lists the jumpers and connectors on
MBD304 and their respective functions.
JP3, JP4: COM1/COM2 RS232 RI/+5V/+12V Power Setting
JP4/JP5 Setting Function
Pin 1-3
Short/Closed
+12V
Pin 3-4
Short/Closed
RI
Pin 3-5
Short/Closed
+5V
J2: Clear CMOS Setting
J2 Function
Normal
Clear CMOS
CN1: DC_IN Connector (+12V Adaptor 4 Pin)
Pin # Signal Name
1 +12V
2 +12V
3 GND
4 GND
5 GND