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ViewSonic VT2755LED

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6. Remote Control Pass-through mode

When PC sets the LCD monitor to Remote Control Pass through mode, the LCD shall send a

three bytes packet (followed by “CR”) in response to RCU button activation. Note, that in this

mode the RCU shall have no effect on the monitor function. For example: “+Volume” will not

change the volume in the LCD but only sends “+Volume” code to PC over the RS232 port.

RCU Pass-through Command description:

Length Total Byte of Message excluding “CR”

TV ID Identication for each of TV

Command Type Identify command type,

“p” (0x70h) : RCU Pass-through

Value[1~2] Two bytes ASCII that denes the value

CR 0x0D

RCU Pass-through Command Format:

Reply: (Command Type= “p”)

Name Length ID Command

Type

Value1 Value2 CR

Byte Count 1 Byte 2 Byte 1 Byte 1 Byte 1 Byte 1 Byte

Bytes order 1 2~3 4 5 6 7

Example1: User press “Menu” Key form RCU to TV-03 and RCU data pass-through

to Server, then server will receive “1A”.

Reply (Hex Format)

Name Length ID Command

Type

Value1 Value2 CR

Hex 0x36 0x30

0x33

0x70 0x31 0x41 0x0D

Example2: User press “5” Key form RCU to TV-07 and RCU data pass-through to Server,

then server will receive “05”.

Reply (Hex Format)

Name Length ID Command

Type

Value1 Value2 CR

Hex 0x36 0x30

0x37

0x70 0x30 0x35 0x0D

1 2 ... 48 49 50 51 52 53 54 55 56 57 58 59

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ViewSonic VT2755LED Guide de l'utilisateur Page 53