SeaLevel 7804e User Manual page 15

Please terminate any control signals that are not going to be used. The most common
way to do this is connect RTS to CTS and RI. Also, connect DCD to DTR and DSR.
Terminating these pins, if not used, will help ensure you get the best performance from
your adapter.
©Sealevel Systems, Inc.
SL9219 – 04/2013
Signal Name
GND Ground
TD Transmit Data
RTS Request To Send
DTR Data Terminal Ready
RD Receive Data
CTS Clear To Send
DSR Data Set Ready
DCD Data Carrier Detect
RI Ring Indicator
7804e Manual
Pin # Mode
5
3 Output
7 Output
4 Output
2 Input
8 Input
6 Input
1 Input
9 Input
15