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8.
COM1 Ring/+5V/+12V selection jumper (6-pin COM1_V1)
Setting
+12V
+5V
Ring (Default)
9.
COM1 operating mode selection jumpers (2-pin J1/J2/J3/J4)
Setting
RS232
RS485/RS422 with terminator Short-circuit jumpers J1, J2, J3 and J4 (Default)
2-16
COM1_V1
6
5
Ring
(Default)
Pins
1-2
3-4
5-6
RS485/RS422
with terminator (Default)
Pins
Open jumpers J1, J2, J3 and J4
4
3
2
1
+5V
+12V
J1~4
RS232
MIX-Q370A2
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