SPECIFICATIONS
CRT-350-NJ10
14/17
12 Electronic Interface
RS-232 Interface & Power Socket
12.1 RS-232Communication Interface
1) Card Reader’s DB-9PIN Definition
Pin
Signal
Input/Output
Functions
1
NC
--
2
RXD
I
Data receive
3
TXD
O
Data send
4
DTR
O
Data ready
5
SGN
Signal Ground
6
DSR
I
Data prepare
7
RTS
O
Request send
8
CTS
I
Clear send
9
NC
--
2)
RS-232 Data cable wiring diagram