Chart 7. Ibm Pc Db25 Connector To Ports A - H (Dte; Chart 8. Ibm Pc Db9 Connector To Ports A - H (Dte - B&B Electronics 8 PORT SMART SWITCH CE 232D4SS8 User Manual

Chart 7. IBM PC DB25 Connector to Ports A - H (DTE)

Master port configured as a DTE port with a modem
IBM PC
Serial Port
DB25 Connector
2
3
4
5
6
7
8
20
* Pins 6 & 8 are tied together inside the 232D4SS8 and share the
same input.

Chart 8. IBM PC DB9 Connector to Ports A - H (DTE)

IBM PC
Serial Port
DB9 Connector
3
2
7
8
6
5
1
4
* Pins 6 & 8 are tied together inside the 232D4SS8 and share
the same input.
B-4
connected (see Chart 3).
Signal
Direction
----------->
<-----------
----------->
<-----------
<---- ---->
<--------->
<-----------
----------->
Master port configured as a DTE port
with a modem connected (see Chart 3).
Signal
Direction
----------->
<-----------
----------->
<-----------
<---- ---->
<--------->
<-----------
----------->
Appendix B
232D4SS8
Ports A - H (DTE)
DB25 Connector
3
2
5
4
6*
7
20
6*
232D4SS8
Ports A - H (DTE)
DB25 Connector
3
2
5
4
6*
7
20
6*
232D4SS84502 Manual