user manual

2-22 Computer Group Literature Center Web Site
CPU Modules
2
Serial Port Connectors
COM 1 (Serial Port 1) (J24) and COM 2 (Serial Port 2) (J25) use 2 x 9-pin
D-sub connectors.
Video Connector
The video connector (J23) uses a 15-pin high density D-sub connector.
Table 2-13. Serial Port Connector Pin Assignments (J24
and J25)
Pin
Number
Signal
Mnemonic Signal Description
1 DCD- data set has detected the data carrier
2 RX Receives serial data input from communication
link
3 TX Sends serial output to communication link
4 DTR- data set is ready to establish a communication link
5 GND Ground
6 DSR- data set is ready to establish a communication link
7 RTS- indicates to data set that UART is ready to
exchange data
8 CTS- data set is ready to exchange data
9 RI- modem has received a telephone ringing signal
Table 2-14. Video Connector Pin Assignments (J23)
Pin
Number Signal Mnemonic Signal Description
1 RED Red signal
2 GREEN Green signal
3 BLUE Blue signal