LG Electronics PJ250R manual Remote Control IR Codes, 1st frame, Repeat frame, Bit description

Models: PJ250R

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APPENDIX

IR CODES

1.How to Connect

Connect your wired remote control to the Remote Control port on the TV.

2.Remote Control IR Codes

Output waveform

Single pulse, modulated with 37.917KHz signal at 455KHz

Tc

T1

Carrier frequency

FCAR = 1/TC = fOSC/12 Duty ratio = T1/TC = 1/3

Configuration of frame

1st frame

Lead code

Low custom code

High custom code

Data code

Data code

C0 C1 C2 C3 C4 C5 C6 C7 C0 C1 C2 C3 C4 C5 C6 C7 D0 D1 D2 D3 D4 D5 D6 D7 D0 D1 D2 D3 D4 D5 D6 D7

Repeat frame

Repeat code

Tf

Lead code

APPENDIX

9 ms

Repeat code

9 ms

4.5 ms

0.55 ms

2.25 ms

Bit description

Bit ”0”

 

 

Bit ”1”

 

 

 

 

 

0.56ms

1.12ms

Frame interval: Tf

The waveform is transmitted as long as a key is depressed.

0.56 ms

2.24 ms

Tf

Tf

Tf=108ms @455KHz

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Page 110
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LG Electronics PJ250R manual Remote Control IR Codes, 1st frame, Repeat frame, Bit description