ViewSonic PX748-4K - 4K UHD Projector with 4000 Lumens 240Hz 4.2ms for Home Thea - Page 5
Introduction, 2 Description, 2.1 Hardware specification
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Projector RS-232 Protocol 1 Introduction This document describes the hardware interface spec and software protocols of RS232 interface communication between ViewSonic Projectors and Control unit, such as PC and AMX controller, with RS232 protocol. The protocol contains three sections command: Write-Function Read-Function Execute-Function 2 Description 2.1 Hardware specification Viewsonic Projector communication port on the rear side (1) Connector type: DSUB 9-Pin (2) Pin Assignment : Male DSUB 9-Pin (outside view) Female DSUB 9-Pin (outside view) Note: 1.Use of crossover (null modem) cable required for use with control device if needed. 2. Only 3 pins connection needed for control communication. For example, below is for Male DSUB 9-Pin Pin # 2 3 5 Signal RXD TXD GND Remark 3 / 35 Projector RS-232 Protocol