LG M3701C-BA - Manual (Page 59)

IR Codes
RS-232C
A17
How to connect
Remote Control IR Code
Connect your wired remote control to Remote Control port on the Product.
Output waveform
single pulse, modulated with 37.917KHz signal at 455KHz
Carrier frequency
FCAR = 1/Tc = fosc/12
Duty ratio = T1/Tc = 1/3
Configuration of frame
• 1st frame
T1
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
Tc
Tf
• Repeat frame
Repeat code
Lead code
Repeat code
9ms
Bit description
• Bit "0" • Bit "1"
2.25ms
9ms
0.55ms
0.56ms
1.12ms
0.56ms
2.24ms
Frame interval : Tf
• The waveform is transmitted as long as a key is depressed.
Tf Tf
Tf=108ms@455KHz
4.5ms
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