B&B Electronics 232D4SS8 manual Chart 5. IBM PC DB25 Connector to Ports a H DTE

Chart 5. IBM PC DB25 Connector to Ports A - H (DTE)

Master port configured as a DCE port.

IBM PC			232D4SS8
Serial Port	Signal		Ports A - H (DTE)
DB25 Connector	Direction		DB25 Connector
2	-----------	>	3
3	<-----------		2
4	-----------	>	5
5	<----------		4
6	<----------		6*
7	<---------	>	7
8	<-----------		8*
20	-----------	>	20

*Pins are tied together inside the 232D4SS8 and share the same input.

Chart 6. IBM PC DB9 Connector to Ports A - H (DTE)

Master port configured as a DCE port.

IBM PC			232D4SS8
Serial Port		Signal	Ports A - H (DTE)
DB9 Connector	Direction		DB25 Connector
2	<-----------		2
3	-----------	>	3
4	-----------	>	6*
5	<---------	>	7
6	<-----------		20
7	-----------	>	5
8	<-----------		4

*Pins 6 & 8 are tied together inside the 232D4SS8 and share the same input.

232D4SS84502 Manual Appendix B B-3

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