RS-232C

 

IR Codes

 

 

 

 

 

How to connect

Connect your wired remote control to Remote Control port on the Product. Remote Control IR Code

Output waveform

single pulse, modulated with 37.917 kHz signal at 455 kHz

 

 

 

 

Tc

 

 

Carrier frequency

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FCAR = 1 / Tc = fosc / 12

 

 

 

 

T1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Duty ratio = T1 / Tc = 1 / 3

 

 

 

 

 

 

 

 

Configuration of frame

1st frame

Lead code

Low

High

Data code

 

Data code

custom code

custom 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

Lead code

Tf

9 ms

Repeat code

9 ms

Bit description

4.5 ms

0.55 ms

2.25 ms

▪ Bit "0"

0.56 ms

1.12 ms

Frame interval : Tf

▪ Bit "1"

0.56ms

2.24ms

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

Tf

Tf

Tf = 108 ms @ 455 kHz

A12

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Image 37
LG Electronics M3801S Output waveform, Configuration of frame, Lead code Repeat code Bit description, Frame interval Tf