Concept Guide

Dell™ C5522QT/C6522QT RS232 External Control
1. Application
This document denes the communication method for control of the Dell LCD display C5522QT /
C6522QT when using an external controller.
2. Connectors and wiring
2.1 RS-232C Remote Access
Connector: 9-pin D-Sub
Cable: Straight cable or null modem cable
RS232 Pin Assignment (Facing Display)
This display uses RXD, TXD and GND lines for RS-232 control.
Note 1: The RS232 cable is not provided by Dell.
2.2 LAN control
Connector: RJ-45 10/100 BASE-T
Cable: Category 5 or higher LAN cable
RJ45
RJ45
LAN cable
Note 2: The LAN cable is not provided by Dell