Infrared Control

JVC D-ILA Projector Remote Control Guide

It is also possible to control JVC D-ILA projectors via Infrared Remote Control Signal Emulation, though is this sometimes slightly more difficult to achieve than RS-232C control due to the differences in Infrared emulation methods between the various equipment manufacturers.

To send an Infrared command to the projector, the required format is 73 in hex, followed by the ASCII value, also in hex, of the command required. The hex ASCII values for all of the Remote Control Emulation Commands are shown in right hand column of the Remote Control Emulation Command tables on pages 4-9.

As an example, to send the Power On command, send: 73 05

It is unlikely that these raw commands will work with proprietary Infrared controllers and they must be converted to the appropriate format before use. For the most common Infrared control system, the Philips Pronto, the widely available and free “MakeHex” program will convert the codes in this guide into the “Long hex” format used by Pronto and other similar systems. Full details of how to carry out the conversion are included with the MakeHex program, but here is some basic information that may help with the process. This information assumes a basic knowledge of MakeHex and the DOS commands required to use it.

When using MakeHex, remember that this uses decimal numbers in its .irp input file. The numbers given in this guide are all in hex. You will therefore have to convert them to decimal to use with MakeHex. The Calculator program supplied with most versions of Microsoft Windows can be used to convert from hex to decimal and from decimal to hex.

As a full worked example, using the Menu Command (which toggles the Menu On/Off), looking at page 7, we can see that the hex ASCII code for this is 2E. This gives a complete hex command of 73 2E. Converting these two numbers to decimal gives 115 46.

Putting these two numbers into the JVC .irp input file supplied with MakeHex gives the following first two lines for the .irp input file:

Device=115

Function=46

Running MakeHex with these parameters will generate the following output file:

Device Code: 115 Function: 46

0000 006D 0001 0011 0141 00A0 0014 003C 0014 003C 0014 0014 0014 0014 0014 003C

0014 003C 0014 003C 0014 0014 0014 0014 0014 003C 0014 003C 0014 003C 0014 0014

0014 003C 0014 0014 0014 0014 0014 02E6

This can be used in any Remote Control system that uses Pronto style Long hex commands.

There is however a way to make this process slightly easier and this is to run MakeHex with the –B command line option. This will generate the hex as well as the decimal numbers for the required commands. Running MakeHex –B on the .irp file shown above will generate the following output file:

Device Code: 115 (0x73) Function: 46 (0x2E)

0000 006D 0001 0011 0141 00A0 0014 003C 0014 003C 0014 0014 0014 0014 0014 003C

0014 003C 0014 003C 0014 0014 0014 0014 0014 003C 0014 003C 0014 003C 0014 0014

0014 003C 0014 0014 0014 0014 0014 02E6

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