ViewSonic Cd4620 Users Guide

ViewSonic CD4620  48 
Chinese 006 : Russian 
OSD timeout  8    s  3  33  005 ~120 Sec  Set OSD timeout 
Volume    8    s  5  35  000 ~ 100     
000: OFF Mute   8    s  6  36 
001: ON (mute)     
000: OFF   Off Timer  8    s  7  37 
001~024 (hour)   
000 : OFF 
001:  PIP 
002:  POP 
003 : PBP 
PIP Mode    8    s  9  39 
004 : PBPA   
000: Main PIP Sound select    8    s  :  3A 
001: PIP     
000: Up 
001: Down 
002: Left 
PIP position  8    s  ;  3B 
003: Right   
000 : VGA 
001 : HDMI1 
002 : HDMI2 
003...

ViewSonic CD4620  49 
5.3 Get-Function Listing  
The PC can interrogate the LCD Monitor for specific information. The Get-Function packet format 
consists of 5 bytes which is similar to the Set-Function packet structure. Note that the “Value” byte is 
always = 00. 
 
Get-Function description:   
Length:  Total Byte of Message excluding “CR” 
TV ID Identification for each of TV 
Command Type Identify command type,   
“g” (0x67h) : Get Command 
Command:  Function command code: One byte ASCII code...

ViewSonic CD4620  50 
Example3: Get Tint from TV-0007 and this command is valid.   
The Tint value is 32. 
Send (Hex Format)   
Name  Length  ID  Command Type Command Value1  Value2  Value3   CR  
Hex   0x38 0x30 0x37 0x67 0X65 0x30 0x30 0x30 0x0D 
Reply (Hex Format) 
Name  Length  ID  Command Type Command Value1  Value2  Value3   CR  
Hex   0x38 0x30 0x37 0x72 0x65 0x30 0x33 0x32 0x0D 
 
Example4: Get Tint from TV-07 , but the Brightness command ID is error and it is NOT in the 
command table. 
Send...

ViewSonic CD4620  51  6. 
Protocol 2 : without ID 
6.1 Set function listing 
The PC can control the LCD Monitor for specific actions. The Set-Function command allows you to 
control the LCD monitor behavior in a remote sit through the RS232 port. The Set-Function packet 
format consists of 5 bytes. Note that the “Value” byte is always = 00. 
 
 
Set-Function description:   
Length:  Total bytes of message = 5 ASCII (35H) excluding “CR” 
Command:  Function command code: One byte ASCII code   
Value[1~3]:...

ViewSonic CD4620  52 
Brightness    5  $  24  000 ~ 100     
Sharpness   5  %   25  000 ~ 100    
Color    5  &  26  000 ~ 100     
Tint    5  ‘  27  000 ~ 100     
Bass  5  .  2E  000 ~ 100  Sets Bass value 
Treble  5  /  2F  000 ~ 100  Sets Treble value 
Balance  5  0  30  000 ~ 100  Sets Balance position 
000 : 16:9 
001 : 4:3 
002 : ZOOM 
Picture Size    5  1  31 
003 : PANORAMA   
000 : English 001 : French 002 : Spanish 003 : Germany 004 : Italian 005 : Simplified Chinese 
OSD Language    55  2  32...

ViewSonic CD4620  53 
6.2 Get-Function Listing  
The PC can interrogate the LCD Monitor for specific information. The Get-Function packet format 
consists of 5 bytes which is similar to the Set-Function packet structure. Note that the “Value” byte is 
always = 00. 
 
Get-Function description:  
Length:  Total bytes of message = 5 ASCII (35H), excluding “CR” 
Command:  Get-Function command code: One byte ASCII code   
Value[1~3]: Always = 000 
 
Get-Function format from PC to LCD (ASCII) 
Name  
Length...

ViewSonic CD4620  54 
 
Length Command Command Response Range 
Get Function   
   Code 
(ASCII) Code (Hex)(Three ASCII  bytes)Comments 
Get-Contrast      a  61  000 ~ 100    Gets Contrast value 
Get-Brightness      b  62  000 ~ 100    Gets Brightness value
Get-Sharpness      c  63  000 ~ 100    Gets Sharpness value
Get-Color      d  64  000 ~ 100    Gets Color value 
Get-Tint      e  65  000 ~ 100  Gets Tint value 
Get-Volume      f  66  000 ~ 100    Gets Volume value 
000: OFF (unmuted)Get-Mute     g...

ViewSonic CD4620  55 
6.3  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. 
 
Remote Control pass-through packet format from LCD monitor to PC(ASCII) 
Name...