CH AP TE R 1 - OVER VIEW
Page 20
1.4.5 DB9 (Female) – RS232 Serial Ports and Console Port
Table 1-11 defines the pin-out of the DB9 female connector for the console port and for serial ports S1 -
S4 when they are configured for the RS232 interface. DB9 connectors are used on RS232 serial ports
S1 - S4 and the console port, for asynchronous connections.
Table 1-11. DB9 Pin-out
Pin
Name
Dir.
Description
1
DCD
In
Data Carrier Detect from DCE.
2
RXD
In
Receive Data from DCE.
3
TXD
Out
Transmit Data to DCE.
4
DTR
Out
Data Terminal Ready to DCE.
5
GND
Pwr
Signal Ground.
6
DSR
In
Data Set Ready from DCE.
7
RTS
Out
Request To Send.
8
CTS
In
Clear to Send.
9
RI
In
Ring Indicator from DCE.
1.4.6 DB9 (Female) – Alarm Port
Table 1-12 defines the pin-out of the DB9 female connector used with the alarm port on the DX940.
Table 1-12. DB9 Pin-out
Pin
Signal
1
NO1 - normally opened 1
2
NC1 - normally closed 1
3
COM2 - common 2
4
Reserved for future use
5
GND - signal ground
6
COM1- common 1
7
NC2 - normally closed 2
8
NO2 - normally opened 2
9
Reserved for future use
