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Ap p en d ix – LG 37LD450 User Manual

Page 157

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157

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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