Perle Systems Adaptors manual RI4 RTS4+

VHDCI-68
Ultra SCSI	EIA-232	EIA-422	EIA-485
Pin Number
3	RI4	RTS4+	NC
4	RTS4	RTS4-	NC
5	DCD4	CTS4-	NC
6	DTR4	TXD4+	TXD4+/RXD4+
7	DSR4	RXD4-	RXD4-
8	TXD4	TXD4-	TXD4-/RXD4-
9	S-GND	S-GND	S-GND
10	TXD3	TXD3-	TXD3-/RXD3-
11	DSR3	RXD3-	RXD3-
12	DTR3	TXD3+	TXD3+/RXD3+
13	DCD3	CTS3-	NC
14	RTS3	RTS3-	NC
15	RI3	RTS3+	NC
16	CTS3	CTS3+	NC
17	RXD3	RXD3+	RXD3+
18	RXD2	RXD2+	RXD2+
19	CTS2	CTS2+	NC
20	RI2	RTS2+	NC
21	RTS2	RTS2-	NC
22	DCD2	CTS2-	NC
23	DTR2	TXD2+	TXD2+/RXD2+
24	DSR2	RXD2-	RXD2-
25	TXD2	TXD2-	TXD2-/RXD2-
26	S-GND	S-GND	S-GND
27	TXD1	TXD1-	TXD1-/RXD1-
28	DSR1	RXD1-	RXD1-
29	DTR1	TXD1+	TXD1+/RXD1+
30	DCD1	CTS1-	NC
31	RTS1	RTS1-	NC
32	RI1	RTS1+	NC
33	CTS1	CTS1+	NC

UltraPort Serial Adaptors User Guide	Chapter 3 Cabling information
Host card back panel connectors and pinouts	Page 110