2-30
Definition of main control board J4
Pin No. Signal Name Discription
1)
NC No connection inside
2)
RXD RS-232 received
3)
TXD RS-232 sent
4)
NC No connection inside
5)
GND Ground
6)
NC No connection inside
7)
NC No connection inside
8)
NC No connection inside
9)
NC No connection inside
Definition of main control board J8
Pin No. Signal Name Discription
1)
VCC0 USB power supply
2)
DM1 Positive signal of USB data
3)
DP1 Negative signal of USB data
4)
GND0 Ground
5)
VCC1 USB power supply
6)
DM2 Negative signal of USB data
7)
DP2 Positive signal of USB data
8)
GND1 Ground
Definition of main control board J9
Pin No. Signal Name Discription
1)
TX+ Positive end of sent signal
2)
TX- Negative end of sent signal
3)
RX+ Positive end of received signal
4)
CT1 No Definition
5)
CT1 No Definition
6)
RX- Negative end of received signal
7)
CT2 No Definition
8)
CT2 No Definition
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