User manual

Page 48
IEI
®
Technology, Corp.
PPC-5170GS Flat Panel PC
3.5.5 COM port RI and Voltage Selection
Use JP7 and JP9 to set pin 9 of COM1 as signal RI or voltage source.
JP9 DESCRIPTION
2-3 closed COM1 RI PIN Use RI
1-2 closed COM1 RI PIN Use Voltage
Table 3-5: COM1 RI and Voltage Selection Jumper
JP7 DESCRIPTION
2-3 closed COM1 RI PIN Use Voltage +12V
1-2 closed COM1 RI PIN Use Voltage +5V
Table 3-6: COM1 RI Voltage Selection Jumper
NOTE:
The use of pin 2-3 or pin 1-2 of JP7 does not make any difference when pin 2-3
of JP9 is in use.
Use JP6 and JP8 to set pin 9 of COM2 as signal RI or voltage source.
JP8 DESCRIPTION
2-3 closed COM2 RI PIN Use RI
1-2 closed COM2 RI PIN Use Voltage
Table 3-7: COM2 RI and Voltage Selection Jumper