ADLINK PCI-C588/PCIe-C588/C584 - Manual (Page 13)

Introduction
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1.3.4 Connector Pin Assignment of C584
DB37 female connector pin assignment for C584.
DB37 Pin No. Signal Name DB37 Pin No. Signal Name
1 RXD1(IN) 20 TXD1(OUT)
2 CTS1(IN) 21 RTS1(OUT)
3 DSR1(IN) 22 DTR1(OUT)
4 DCD1(IN) 23 RI1(IN)
5 GND 24 RXD2(IN)
6 TXD2(OUT) 25 CTS2(IN)
7 RTS2(OUT) 26 DSR2(IN)
8 DTR2(OUT) 27 DCD2(IN)
9 GND 28 RI2(IN)
10 GND 29 RI3(IN)
11 GND 30 DCD3(IN)
12 DTR3(OUT) 31 DSR3(IN)
13 RTS3(OUT) 32 CTS3(IN)
14 TXD3(OUT) 33 RXD3(IN)
15 GND 34 RI4(IN)
16 DCD4(IN) 35 DTR4(OUT)
17 DSR4(IN) 36 RTS4(OUT)
18 CTS4(IN) 37 TXD4(OUT)
19 RXD4(IN) --