ViewSonic Vt3200-l Manual

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32
Problem Possible Solution
Remote control unit does 
not operate• Make sure the batteries are inserted correctly.
• Batteries could be weak or dead. Replace with new batteries.
• H
control sensor.
• The path of the remote control beam may be blocked. Make 
sure the path is clear and that the remote control is aimed at the 
remote control sensor on the TV.
• Press 
 on the remote control to see if you can turn on the TV.
• Press MENU on the remote control to see if there is an OSD...

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33
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Model VT3200-L VT4200-L
LCD
(LED Backlight)Screen Size 32-inch Full HD 60Hz 42-inch Full HD 60Hz
Aspect Ratio 16:9 16:9
Television SystemATSC / 64 & 256 QAM / 
NTSC-MATSC / 64 & 256 QAM / NTSC-M
Program Coverage
9+)a













8+)a

















DTV : 02-69
&$79a









&$79a
Input signalRGB RGB analog (0.7/1.0 Vp-p, 75 ohms) Separate Sync,
fh: 31.5-67.5 kHz, fv:59.94-60 Hz
RF TV system Antenna / NTSC+ATSC, TV cable system /...

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34
RS232 Protocol
1. Introduction
This document describes the hardware interface spec and software protocols of RS232 interface 
communication between Viewsonic Commercial Display and PC or other control unit with RS232 
protocol.
The protocol divide into three sections:
• Set-Function
• Get-Function
• Remote control pass-through mode
* In below document, “PC” will represents all the control units that can sent or receive the RS232 
protocol command.
2. Description...

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35
3. Protocol
3.1 Set-Function Listing
7KH3&FDQFRQWUROWKH790RQLWRUIRUVSHFL

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36
Reply (Hex Format)
NameLength ID Command 
Ty p eCR
Hex
0x340x30
0x320x2B0x0D
Example2: Set Brightness as 176 for TV-02 and this command is NOT valid.
Send (Hex Format)
NameLength ID Command
Ty p eCommand Value1 Value2 Value3 CR
Hex
0x380x30
0x320x730x240x310x370x360x0D
Reply (Hex Format)
NameLength ID Command
Ty p eCR
Hex
0x340x30
0x320x2D0x0D
Set-function table
Set  
FunctionLength ID Command 
Type (ASCII)Command Value Range  
(Three ASCII bytes)Comments
Code (ASCII) Code (Hex)...

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37
OSD 
language8 s 2 32 000: English
001: French
002: SpanishExtend the value for
more supported
languages
Power lock 8 s 4 34 000 : Unlock
001 : Lock
Volume 8 s 5 35a
Mute 8 s 6 36 000: OFF
001: ON (mute)
Button lock 8 s 8 38 000: Unlock
001: Lock
TV channel
(DTV)8 s < 3C 
For -0:
a
$a)
a
For -k:
1
st and 2nd char are 
same as -0
3
th char is
CHAR[ ASC(3th
digi)+ k x 10 ]It’s channel OSD
number but not
frequency number.
TV channel
(ATV)8s= 3Da
Menu...

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[NOTE]
1. Behavior at lock modes
Lock Mode Behavior
Button Lock 1. Lock all buttons of front panel and RCU, except for “Power”
2. All the SET functions should be workable via RS32, even the ones with
according hot key in RCU like Mute,…etc.
MENU Lock 1. Lock “MENU’ key of front panel and RCU
2. The Factory and Hospitality modes should not be blocked for the 
model
using MENU-combined key to enter these two modes. Alternative 
approach
will be indicated separately if any limitation by...

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39
Get-Function format: 
Send: (Command Type= “g”)
NameLength ID Command
Ty p eCommand Value1 Value2 Value3 CR
Byte Count 1 Byte 2 Byte 1 Byte 1 Byte 1 Byte 1 Byte 1 Byte 1 Byte
Bytes 
order1a4 5 6789
Reply: (Command Type= “r” or “-”) 
If the Command is valid, Command Type = “r”
NameLength ID Command
Ty p eCommand Value1 Value2 Value3 CR
Byte Count 1 Byte 2 Byte 1 Byte 1 Byte 1 Byte 1 Byte 1 Byte 1 Byte
Bytes 
order1a4 5 6789
If the Command is Not valid, Command Type= “-”
NameLength...

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40
Reply (Hex Format)
Name Length ID Command
Ty p eCR
Hex
0x340x30
0x350x2D0x0D
Get-function table
Get 
FunctionLength ID Command 
Ty p eCommand Response Range  
(Three ASCII 
bytes)Comments
Code (ASCII) Code (Hex)
Get-Contrast 8 g a 61a
Get-Brightness 8 g b 62a
Get-Sharpness 8 g c 63a
Get-Color 8 g d 64a
Get-Tint 8 g e 65a
Get-Volume 8 g f 66a
Get-Mute 8 g g 67 000: Off
001: On (muted)
Get-Input select 8 g j 6AaSee Set-function...

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IR Pass Through-Function format 
Reply: (Command Type= “p”)
NameLength ID Command
Ty p eRCU Code1
(MSB)RCU Code2
(LSB)CR
Byte Count 1 Byte 2 Byte 1 Byte 1 Byte 1 Byte 1 Byte
Bytes 
order1a45 67
Example1:  Remote Control pass-through when “VOL+” key is pressed for TV-05 
Reply (Hex Format)
NameLength ID Command
Ty p eRCU 
Code1
(MSB)RCU 
Code2
(LSB)CR
Hex
0x360x30
0x350x700x310x300x0D
Key Code (HEX)
101
202
303
404
505
606
707
808
909
00A
-0B
RECALL (LAST) 0C
0D
0E
ASPECT (ZOOM) 0F...