Rs232 connector and cable, Table c-43, Table c-44 – Interphase Tech CONDOR 4221 User Manual
Page 118
106
Appendix B
RS232 Connector and Cable
Table C-43. Serial Connector Pinouts (SPA and SPB)
NOTE: The same cable for the second Serial Port for PC compatible systems can be used for the 4221 Condor. This
cable can be built or bought off-the-shelf from many computer stores. The cable pinout is shown in the following
table:
Table C-44. Suggested RS232 Cable Pinout
NOTE: Both RS232 ports on the Condor are configured as Data Terminal Equipment (DTE). With this connector
and cable configuration, a NULL modem cable may be required to connect a terminal to the board.
PIN
MNEMONIC
TYPE
DESCRIPTION
1
-
-
Unconnected (DCD)
2
DSR
I
Data Set Ready
3
RXD
I
Receiver Data Input
4
RCTS
I/O
RTS/CTS, (shorted to pin 6)
5
TXD
O
Transmitter Data Output
6
RCTS
I/O
RTS/CTS, (shorted to pin 4)
7
DTR
O
Data Terminal Ready
8
-
-
Unconnected (RI)
9
GND
-
Signal Ground
10
-
-
Unconnected
10-PIN
DB-25 PIN
MNEMONIC
DESCRIPTION
1
8
DCD
Data Carrier Detect
2
6
DSR
Data Set Ready
3
3
RXD
Receiver Data Input
4
4
RTS
Request to Send
5
2
TXD
Transmitter Data
6
5
CTS
Clear To Send
7
20
DTR
Data Terminal Ready
8
22
RI
Ring Indicator
9
7
GND
Signal Ground
10
-
-
Unconnected