LG L3200TF User Manual page 49

Transmission / Receiving Protocol
20. Tune Command(command : m a)
GTune channel to following physical number.
Transmission
[m][a][ ][Set ID][ ][Data0][ ][Data2][ ][Data3][Cr]
Data 0 : Air : 02H ~ 45H, Cable : 01H, 0EH ~ 7DH
1 : 0
2 : 0
3 : High -> Main Channel : 0, Sub Channel : 1
Low -> Air 0, CATV : 1
Acknowledgement
[a][ ][Set ID][ ][OK][Data0][ ][Data1][ ][Data2][ ][Data3][X]
21. Channel Add/Del (Command : m b)
GTo add and delete the channels.
Transmission
[m][b][ ][Set ID][ ][Data][Cr]
Data 0 : Channel Memory
1 : Channel Erase
Acknowledgement
[b][ ][Set ID][ ][OK][Data][X]
22.Key(Command : m c)
GTo send IR remote key code.
Transmission
[m][c][ ][Set ID][ ][Data][Cr]
Data Key code : Refer to page A50.
Acknowledgement
[c][ ]Set ID][ ][OK][Data][X]
A48