89
APPENDIX

IR CODES

A

Configuration of frame

1st frame
Repeat frame
A

Lead code

A

Repeat code

ABBiitt ddeessccrriippttiioonn
AFFrraammee iinntteerrvvaall:: TTff
The waveform is transmitted as long as a key is depressed.
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
Lead code Low custom code High custom code Data code Data code
Repeat code Tf
4.5 ms
9 ms
2.25 ms
9 ms
0.55 ms
0.56 ms
1.12 ms
0.56 ms
2.24 ms
Tf Tf
Tf=108ms @455KHz
Bit ”0” Bit ”1”

1. How to Connect

AConnect your wired remote control to the Remote Control port on the set.

2. Remote Control IR Codes

A

Output waveform

Single pulse, modulated with 37.917 KHz signal at 455 KHz
T1
Tc
Carrier frequency
FCAR = 1/TC = fOSC/12
Duty ratio = T1/TC = 1/3