LG 37LD450C Owner's Manual page 59

Data5:
The table above lists the binary code which must be
converted to Hexadecimal before sending. For exam-
ple: The binary code to tune the sub source to an
NTSC cable channel is "1000 0001'i which translates
to "81" in Hex.
7th bit : For which source do you want to change the
channel.
6th bit: Use a two part or one part channel. Most
cases just use 0 since it's ignored when using
NTSC.
5th bit: Use 0 with NTSC since it can only use the
physical channel number. Normally use 1 for ATSC
since most times it doesn't matter what the physical
number is.
4th bit: Set to O.
3-0 bits: Choose signal type.
_Tune Command Examples:
1. Tune to the analog (NTSC) cable channel 35.
Data O0 = Physical of 35 = 23
Data 01 & 02 = No Major = O0 O0
Data 03 & 04 = No Minor = O0 O0
Data 05 = 0000 0001 in binary = 01
Total = ma O0 23 O0 O0 O0 O0 01
2. Tune to the digital (ATSC) local channel 30-3.
Data O0 = Don't know Physical = O0
Data 01 & 02 = Major is 30 = O0 1E
Data 03 & 04 = Minor is 3 = O0 03
Data 05 = 0010 0010 in binary = 22
Total = ma O0 O0 O0 1E O0 03 22
21. Channel Add/Del (Command: m b)
To add and delete the channels.
Transmission [m][b][ ][Set ID][ ][Data][Cr]
Data 00: Channel DeleteData 01: Channel Add
Acknowledgement [b][ ][Set ID][ ][OK/NG][Data][x]
22. Key (Command: m c)
To send IR remote control code.
Transmission [m][c][ ][Set ID][ ][Data][Cr]
See page 151.
Acknowledgement [c][ ][Set ID][ ][OK/NG][Data][x]
When TV is in the standby mode, TV will turn on by
POWER button of remote control only.
23. Backlight (Command: m g)
To adjust screen backlight.
Transmission [m][g][ ][Set ID][ ][Data][Cr]
Data Min:O0 - Max:64 (_transmit by Hexadecimal code)
_Refer to 'Real data mapping'.
Acknowledgement [g][ ][Set ID][ ][OK/NG][Data][x]
_>
"0
"0
m
Z
_D
X
157