Appendices; Rs422 Configuration - EEG HD490 Manual

HD490 Smart Encoder

Appendices

Appendix A: RS422 Configuration
Serial data ports P1 and P2 are individually configurable for RS422
operation. RS422 can be used for greater signal integrity over longer
distances.
To reconfigure for RS422:
1. Unscrew and remove the top panel of the Encoder.
2. Locate the adjacent 3-pin selection headers labeled JP3 (sets P1) and
JP5 (sets P2) on the EEG video board. If you are looking at the board
with the rear panel of the Encoder facing towards you, pin 1 is the left-
most pin on the header.
3. The serial ports will be set for RS232 if the jumpers on the selectors
connect pins 1 & 2. They will be set for RS422 if the jumpers connect
pins 2 & 3. Always adjust the jumper setting in tandem.
Copyright © 2000-2012 EEG Enterprises, Inc.
All Rights Reserved.
eeg
44