LG 42LD550 Owner's Manual page 189

Data5: 7 6
Main/Sub Two/One Part
Channel
Picture
0 Main 0 Two
1 Sub 1 One
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 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]
22. 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]
5 4
Using Physical
Reserved
Channel
0 Use x
1 No Use x
x
x
x
x
x
x
x
x
3 2 1 0
0 0 0 0 NTSC Air
0 0 0 1 NTSC Cable
0 0 1 0 ATSC Air
0 0 1 1 ATSC Cable_std
0 1 0 0 ATSC Cable_hrc
0 1 0 1 ATSC Cable_irc
0 1 1 0 ATSC cable_auto
0 1 1 1 Reserved
x x x x ...
1 1 1 1 Reserved
23. Key (Command: m c)
To send IR remote control code.
Transmission [m][c][ ][Set ID][ ][Data][Cr]
See page 183.
Acknowledgement [c][ ][Set ID][ ][OK/NG][Data][x]
24. Backlight (Command: m g) (For LED LCD TV/LCD TV)
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]
25. 3D (Command: x t) (For 50/60PZ540, 50/60PZ550)
To change 3D mode for TV.
Transmission [x][t][ ][Set ID][ ][Data01][ ][Data02][ ]
[Data03][ ][Data04][Cr]
Data 1
00: 3D On 01: 3D Off
02: 3D to 2D 03: 2D to 3D
Data 2
00: Top and Bottom 01: Side by Side
02: Check Board 03: Frame Sequential
Data 3
00: Right to Left
01: Left to Right
Data 4
3D Depth: Min : 00 ~ Max : 14
(*transmit by Hexadecimal code)
* If data1 is 00 (3D On), data4 has no meaning.
* If data1 is 01 (3D off) or 02(3D to 2D), data2, data3 and
data4 have no meaning.
* If data1 is 03 (2D to 3D), data2 and data3 have no
meaning.
Data 1 Data 2 Data 3
00 o o
01 x x
02 x x
03 x x
x : Don't care
Acknowledgement [t][ ][OK][Data01][Data02]
[Data03][Data04][x][t][ ][NG][Data01][x]
Step
Data 4
x
x
x
o
189