LG M4210LC Owner's Manual page 66

RS-232C
RS-232C
Connect your wired remote control to Remote Control port on the Product.
Output waveform
single pulse, modulated with 37.917kHz signal at 455kHz
Tc
T1
Configuration of frame
• 1st frame
Lead Low
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
9 ms
Repeat code
9 ms
Bit description
• Bit "0"
0.56 ms
1.12 ms
Frame interval : Tf
• The waveform is transmitted as long as a key is depressed.
Tf
Controlling the Multiple Product
How to connect
Remote Control IR Code
Carrier frequency
FCAR = 1 / Tc = fosc / 12
Duty ratio = T1 / Tc = 1 / 3
High
custom code
Tf
4.5 ms
2.25 ms
• Bit "1"
Tf = 108 ms @ 455 kHz
A28
IR Codes
Data code
0.55ms
0.56 ms
2.24 ms
Tf
Data code