LG Electronics M3801S, M2901S PowerCommand a, Input SelectCommand k bMain Picture Input

RS-232CControlling the Multiple Product

Transmission / Receiving Protocol

01. Power(Command : a)

► To control Power On / Off of the Set.

Transmission Acknowledgement

[k][a][][Set ID][][Data][Cr]

Data 00 : Power Off

►To show the status of Power On / Off. Transmission

[a][][Set ID][][OK][Data][x]

01 : Power On

Acknowledgement

[k][a][][Set ID][][Data][Cr]

Data : FF

[a][][Set ID][][OK][Data][x]

Data 00 : Power Off 01 : Power On 09 : DPM

02.Input Select(Command : k b)(Main Picture Input)

► To select input source for the Set.

You can also select an input source using the INPUT button on the remote control.

Transmission

[k][b][][Set ID][][Data][Cr]

Data 07 : RGB(PC) 09 : HDMI(PC)

Acknowledgement

[b][][Set ID][OK][Data][x]

03.Input Select(Command : x b)

► To select input source foe the Set.

Transmission

[x][b][][Set ID][][Data][Cr]

Data 60 : RGB(PC) a0 : HDMI(PC)

Acknowledgement

[b][][Set ID][OK][Data][x]

04.Aspect Ratio(Command : k c) (Main picture format)

► To adjust the screen format.

You can also adjust the screen format using the ARC(Aspect Ratio Control) button on remote control or in the Screen menu.

Transmission

[k][c][][Set ID][][Data][Cr]

Data 0a : Top 0b : Bottom 0c : Stretch

Acknowledgement

[c][][Set ID][OK][Data][x]

05.Contrast(Command : k g)

► To adjust screen contrast.

You can also adjust the contrast in the Picture menu.

Transmission Acknowledgement

[k][g][][Set ID][][Data][Cr]

[g][][Set ID][OK][Data][x]

Data Min : 00 to Max : 64

*Real data mapping 0 : step 0, ...., a : step 10, ...., 64 : step 100 A4