Appendix A: Cable Charts; Port A Connections; Port B Connections - B&B Electronics RS-232 Baud Rate Converter CE 232BRC Product Manual

Appendix A: Cable Charts

All charts give full pinouts. Only pins 2 & 3 are required for basic
operation. Pins 7 and 8 are needed for hardware (RTS/CTS)
handshaking. If the connected device requires DTR or DSR, these
signals are available on pins 4 and 6 respectively. See Appendix B
for a block diagram of the 232BRC.

Port A Connections

Chart A.1. DTE (PC) DB9 Connector to Port A (DCE)
DTE (PC)
Serial Port Signal
DB9 Connector Direction
2 <-----------
3 ----------->
4 ----------->
5 <--------->
6 <-----------
7 ----------->
8 <-----------
Chart A.2. DTE (PC) DB25 Connector to Port A (DCE)
DTE (PC)
Serial Port Signal
DB25 Connector Direction
2 ----------->
3 <-----------
4 ----------->
5 <----------
6 <----------
7 <--------->
20 ----------->
232BRC-3903 Manual Appendix A: Cable Charts
B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104
B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +353 91 792444 – Fax +353 91 792445
232BRC
Port A (DCE)
DB9F Connector
2 (RD)
3 (TD)
4 (DTR)
5 (GND)
6 (DSR)
7 (RTS)
8 (CTS)
232BRC
Port A (DCE)
DB9F Connector
3 (TD)
2 (RD)
7 (RTS)
8 (CTS)
6 (DSR)
5 (GND)
4 (DTR)
A-1
Chart A.3. DCE (Modem) DB9 Connector to Port A (DCE)
DCE (Modem)
Serial Port Signal
DB9 Connector Direction
2 ----------->
3 <-----------
4 <-----------
5 <--------->
6 ---------->
7 <-----------
8 ----------->
Chart A.4. DCE (Modem) DB25 Connector to Port A (DCE)
DCE (Modem)
Serial Port Signal
DB25 Connector Direction
2 <-----------
3 ----------->
4 <-----------
5 ---------->
6 ---------->
7 <---------->
20 <-----------

Port B Connections

Chart A.5. DCE (Modem) DB9 Connector to Port B (DTE)
DCE (Modem)
Serial Port Signal
DB9 Connector Direction
2 ----------->
3 <-----------
4 <-----------
5 <--------->
6 ----------->
7 <-----------
8 ----------->
A-2 Appendix A: Cable Charts
B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104
B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +353 91 792444 – Fax +353 91 792445
232BRC
Port A (DCE)
DB9F Connector
3 (TD)
2 (RD)
6 (DSR)
5 (GND)
4 (DTR)
8 (CTS)
7 (RTS)
232BRC
Port A (DCE)
DB9F Connector
2 (RD)
3 (TD)
8 (CTS)
7 (RTS)
4 (DTR)
5 (GND)
6 (DSR)
232BRC
Port B (DTE)
DB9M Connector
2 (RD)
3 (TD)
4 (DTR)
5 (GND)
6 (DSR)
7 (RTS)
8 (CTS)
232BRC-3903 Manual