Intermec 6400 - Manual (Page 150)

APPENDIX A Connector Pin-Outs
A-2 6400 Hand-Held Computer User’s Guide
Optional Communication Adapter 9-Pin
D-Sub Connector
Figure A-2
9-Pin D-Sub Connector Pinouts
1 2 3 4 5
6 7 8 9
Negative contact
Positive contact
Pin Signal Function
1 No Connect Data Carrier Detect
2 RXD Receive Data
3 TXD Transmit Data
4 looped to DSR Data Terminal Ready
5 GND Ground
6 looped to DTR Data Send Ready
7 RTS Request To Send
8 CTS Clear To Send
9 Vcc 5 volts *
B CAUTION: * 5 volts on pin 9 is for use with tethered scanners and printers
only, this may damage modems.