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 
menu shown on the screen.
• Press only one button at a time and it is the correct one for the 
operation you want to perform.
Unit cannot be operated• 
¿UVW
turning on the power of the TV and the AVC System, or unplug 
the AC cord for 1 to 2 minutes, then replug again.
Power is cut off suddenly• Make sure the sleep timer is turned off.
• Make sure the PC or video signal cable is connected properly.
• The internal temperature of the unit has increased. Remove any 
objects blocking the vent or clean as necessary.
No CATV reception (or no 
reception above CH13)• Set the correct Signal Type (Air / Cable) on the Channel menu.
• CATV is connected improperly or not connected; please check 
all the CATV connections.
• The cable TV service is interrupted; please contact your cable 
operator.
• Adjust the location of the antenna, place it far from roads or 
sources of interference.
Picture is cut off/with 
sidebar screen• Make sure the video signal cable is connected properly.
• Adjust  the Screen Size setting on the Picture menu.
• Press ASPECT repeatedly on the remote control to switch to the 
display mode you prefer. 
						

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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









&$79a
Input signalRGB RGB analog (0.7/1.0 Vp-p, 75 ohms) Separate Sync,
fh: 31.5-67.5 kHz, fv:59.94-60 Hz
RF TV system Antenna / NTSC+ATSC, TV cable system /
CATV+Digital cable
Video 1 composite RCA, 1 YPbPr component, 3 HDMI
Audio 1 mini-stereo,
2 pair of RCA (L/R) stereo
USB JPEG / MP3 Format
CompatibilityPC Up to 1920 x 1080 (CEA mode)
Speaker Output
10W x 2 @ THD=10% (max) 10W x 2 @ THD=10% (max)
Audio Output1 Earphone jack, 1 SPDIF 
(optical)1 Earphone jack, 1 SPDIF 
(optical)
RS232 OutputRS232 communication RS232 communication
IR control OutputIR pass through signal  
(NEC 38KHz / RC5 38KHz)IR pass through signal  
(NEC 38KHz / RC5 38KHz)
PowerVoltage$&a9+] $&a9+]
Operating
conditionsTemperature 0°C to + 40°C 0°C to + 40°C
Humidity 20% to 90% (no condensation) 20% to 90% (no condensation)
Storage
conditionTemperature -20°C to + 60°C -20°C to + 60°C
Humidity 20% to 90% (no condensation) 20% to 90% (no condensation)
DimensionsPhysical
(W) x (L) x (H)
747.8 x 180 x 488.1 mm
(29.44 x 7.09 x 19.22 in)974.2 x 210 x 626.3 mm
(38.35 x 8.27 x 24.66 in)
WeightWith stand8.8kg (19.38 lb) 13.3kg (29.3 lb)
Without stand8.0kg(17.62 lb) 11.9 kg ( 26.24 lb)
RegulationsUL/cUL, FCC, BETS-7,NRCan, CEC
Power
consumptionOn50 W ( typ) / 55 W (max) 59 W (typ) / 75 W (max)
Stand by 0.5 W 0.5 W
Warning: Do not set the graphics card in your computer to exceed 
these refresh rates; doing so may result in permanent damage to the 
LCD TV.
Note: 
						

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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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Viewsonic LCD communication port in the rear side
(1) Connector type: DSUB 9 Pin Male
(2) Pin Assignment
Pin # Signal Remark
1NC
2 RXD Input to LCD Monitor
3 TXD Output from LCD Monitor
4NC
5GND
6NC
7NC
8NC
9NC
frame GND
* Use of crossover (null modem) cable required for use 
with PC.
12345
6789
Male DSUB 9Pin
(outside view)
2.2 Communication Setting
• %DXG5DWH6HOHFWESV¿[HG
• DWDELWVELWV¿[HG
• 3DULW\1RQH¿[HG
• 6WRS%LWV¿[HG
2.3 Command Message Reference
PC sends to Monitor command packet followed by “CR”. Every time PC sends control command 
to the Monitor, the Monitor shall response as follows:
1. If the message is receives correctly it will send “+” (02Bh) followed by “CR” (00Dh)
2. If the message is receives incorrectly it will send “-” (02Dh) followed by “CR” (00Dh) 
						

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3. Protocol
3.1 Set-Function Listing
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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)
Power on/
off(standby)8 s ! 21 000: STBY
001: ON
Input Select 8 s “  22 000 : TV
001 : AV
002 : S-Video
003 : YPbPr
004 : HDMI
014: HDMI2
024: HDMI3
005 : DVI
006 : PC/VGA1. No need for USB
2. For the case of 
two
more same sources,
the 2
nd digital is used
to indicate the
extension.
Contrast 8 s # 23a
Brightness 8 s $ 24a
Sharpness 8 s % 25a
Color 8 s & 26a
Tint 8 s ‘ 27a
Color mode 8 s ) 29 000: Normal
001: Warm
002: Cold
003: Personal
Bass 8 s . 2Ea
Treble 8 s / 2Fa
Balance 8 s 0 30aSets Balance 
position 
						

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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 lock 8 s >  3E 000: Unlock
001: Lock
Number 8 s @ 40a
Key Pad 8 s A 41 000: UP
001: DOWN
002: LEFT
003: RIGHT
004: ENTER
005: INPUT
006: MENU/EXIT
Remote
Control8 s B 42 000: Disable
001: Enable
002: Pass through
Disable: RCU has 
no
effect on HDTV.
Enabled: RCU
controls the HDTV.
This is the power up
default on the 
HDTV.
Pass through: 
RCU
has no effect on
HDTV and all RCU
command codes 
are
transmitted to FC 
via
the RS232 port.
Setup 
wizard8 s C 43 000: Disable
001: EnableDisable: to skip the
initial setup wizard
Restore
default8sa7E 000 Resets HDTV to
factory setting 
						

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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 model.
POWER Lock 1. Lock “POWER” key of front and RCU.
2. The SET_POWER on/off should be workable via RS232, but does not 
mean
the POWER lock will be released under this case.
3. Can not be un-locked by reset in OSD setting
4. Will auto AC power-on in power-lock
5. Under power-lock, the set will not enter power saving when no PC 
signal and
neither not turn off when no other video signals after 15min.
Remote control 
disableLock the keys on RCU, but keep the buttons of front panel workable.
2. Example for value setting of SET_TV channel DTV
012-0: 0x 30 31 32
012-1: 0x 30 31 42
1012-2: 0x 41 31 52
1512-3: 0x 46 31 62
3.2 Get-Function Listing
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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 ID Command
Ty p eCR
Byte Count 1 Byte 2 Byte 1 Byte 1 Byte
Bytes 
order1a45
Example1: Get Brightness from TV-05 and this command is valid. 
The Brightness value is 67.
Send (Hex Format)
NameLength ID Command
Ty p eCommand Value1 Value2 Value3 CR
Hex
0x380x30
0x350x670x620x300x300x300x0D
Reply (Hex Format)
NameLength ID Command
Ty p eCommand Value1 Value2 Value3 CR
Hex
0x380x30
0x350x720x620x300x360x37 0x0D
Example2: Get Brightness from TV-05 , but the Brightness command ID is error and it is 
NOT in the command table.
Send (Hex Format)
Name Length ID Command
Ty p eCommand Value1 Value2 Value3 CR
Hex
0x380x30
0x350x670XD30x300x300x300x0D 
						

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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 
table
Get-Power
status: ON/
STBY8 g l 6C 001: ON
000: STBY
Get-Remote
control8 g n 6E 000: Disable
001: Enable
002: Pass 
throughGets RCU mode 
status
Get-Power lock 8 g o 6F 000: Unlock
001: Lock
Get-Button lock 8 g p 70 000: Unlock
001: Lock
Get-Menu lock 8 g q 71 000: Unlock
001: Lock
Get-Setup
wizard8 g s 73 000: Disable
001: Enable
Get-ACK 8 g z 7A 000 This command is 
used
to test the
communication link.
3.3 Remote Control Pass-through mode
When PC sets the TV monitor to Remote Control Pass through mode, the TV shall send a 7 bytes 
packet (followed by “CR”) in response to RCU button activation. Note, that in this mode the RCU 
shall have no effect on the TV function. For example: “Volume+” will not change the volume in the 
LCD but only sends “Volume+” code to PC over the RS232 port. 
						

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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
VOLUME UP (+) 10
VOLUME DOWN (-)  11
MUTE 12
CHANNEL/PAGE UP (+)  13
CHANNEL/PAGE DOWN (-)  14
POWER 15
SOURCES (INPUTS) 16
17
18
SLEEP 19
MENU 1A
UP 1B