ViewSonic VT3205LED Bedienungsanleitung PDF herunterladen (Seite 47)

10. RS-232 Protocol

10.1 Introduction

This document describes the hardware interface spec and software protocols

of RS232 interface communication between ViewSonic Commercial TV / Digital

Signage and PC or other control unit with RS232 protocol.

The protocol contains three sections command:

• Set-Function

• Get-Function

• Remote control pass-through mode

※ In the document below, “PC＂ represents all the control units that can send or

receive the RS232 protocol command.

10.2 Description

10.2.1 Hardware specification

Viewsonic TV communication port on the rear side:

(1) Connector type: DSUB 9-Pin Male

(2) Pin Assignment

Male DSUB 9-Pin

(outside view)

Pin # Signal Remark

1 NC

2 RXD Input to Commercial TV or DS

3 TXD Output from Commercial TV or

4 NC

5 GND

6 NC

7 NC

8 NC

9 NC

frame GND

* Use of crossover (null modem) cable required for

use with PC

[Special case]

3.5mm barrel connector

Pin # Signal Remark

Tip TXD Output from Commercial TV or

Ring RXD Input to Commercial TV or DS

Sleeve GND

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ViewSonic VT3205LED Bedienungsanleitung Seite 47