LG 37LD452C - Manual (Page 157)

157
A
P
P
EN
D
IX
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”, 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 0.
* 3-0 bits: Choose signal type.
* Tune Command Examples:
1. Tune to the analog (NTSC) cable channel 35.
Data 00 = Physical of 35 = 23
Data 01 & 02 = No Major = 00 00
Data 03 & 04 = No Minor = 00 00
Data 05 = 0000 0001 in binary = 01
Total = ma 00 23 00 00 00 00 01
2. Tune to the digital (ATSC) local channel 30-3.
Data 00 = Don’t know Physical = 00
Data 01 & 02 = Major is 30 = 00 1E
Data 03 & 04 = Minor is 3 = 00 03
Data 05 = 0010 0010 in binary = 22
Total = ma 00 00 00 1E 00 03 22
Acknowledgement[a][ ][Set ID][ ][OK][Data00]
[Data01] [Data02][Data03][Data04][x][a][ ][Set ID][ ]
[NG][Data00][x]
21. Channel Add/Del (Command: m b)
To add and delete the channels.
Transmission [m][b][ ][Set ID][ ][Data][Cr]
Data 00: Channel Delete Data 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:00 ~ Max:64 (*transmit by Hexadecimal code)
*Refer to ‘Real data mapping’.
Acknowledgement [g][ ][Set ID][ ][OK/NG][Data][x]
7
Main/Sub
Picture
6
Two/One Part
Channel
5
Using Physical
Channel
4
Reserved
3 2 1 0 Step
0 Main 0 Two 0 Use x 0 0 0 0 NTSC Air
1 Sub 1 One 1 No Use x 0 0 0 1 NTSC Cable
x 0 0 1 0 ATSC Air
x 0 0 1 1 ATSC Cable_std
x 0 1 0 0 ATSC Cable_hrc
x 0 1 0 1 ATSC Cable_irc
x 0 1 1 0 ATSC cable_auto
x 0 1 1 1 Reserved
x x x x x ...
x 1 1 1 1 Reserved