APPENDIX C: AUDIO/SERIAL PORTS
Appendix C: Audio/Serial Ports
Operation & Multi-Port Configuration
This appendix describes audio & serial interface operation for ACU4222A.
This extender allows
Serial Interface - Set Up and Operation
No setting up or user adjustments are required.
The Remote unit’s serial port is wired as DTE - the same as that on a PC. To connect a serial printer or other DTE (rather than DCE device) to the Remote unit, you will need a Null- Modem crossover cable between the Remote unit and the printer. Select Xon/Xoff software flow control on the printer and PC.
A serial touch screen may be plugged directly into the Remote unit.
Serial Interface – Handling Multiple Serial Devices
The extender’s serial interface transmits/receives six signals (3 signals in each direction).
Normally, four of these signals are used for hardware handshaking (in addition to TX & RX). However, because each handshaking line can support signals up to 19,200 Baud it is possible to configure the serial interface to handle up to three simple
To do this, you will need to construct a custom breakout cable. Please contact Technical Support for further information.
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