Ring Communications DNA200 User Manual
Page 6
DNA200 OPERATIONS MANUAL
6
2008/05/01
J2 - 9 pin (DB9) RS232 signals :
The DNA200 has a RS232 serial port interface, J2, that can connect to a terminal, printer, or video switcher. Check
your terminal, printer or video switcher manual for the correct RS232 connector type, input, output and handshaking
signal connections.
The maximum length for a RS232 cable connecting the DNA200 and other equipment is 50 feet.
A null-modem (LapLink) cable can be used to connect a DNA200 and a PC computer together if they are close
enough to each other.
If you are going to make your own cable the following is a description of the pinout of the DB9 connector on the
DNA200.
J2
SIGNAL
DIRECTION/
PIN#
NAME
DESIGNATION
1
DCD
Data Carrier Detect, input.
2
RXD
Receive Data, input.
3
TXD
Transmit Data, output.
4
DTR
Data Terminal Ready, output.
5
GND
Signal Ground.
6
DSR
Not used.
7
RTS
Request to Send, output.
8
CTS
Clear to Send, input.
9
RI
Not used.
J3 - 6 pin (RJ11) RS422 signals :