BenQ Interactive Flat Panel T420 Tl550 T650 User Manual

Basic operations 31
Basic operations
Turning the display on or off
Locking/unlocking the controls
You can lock/unlock the control panel to prevent unwanted or accidental operations.
Control panel buttonsPress and hold  and  simultaneously for 5 seconds. Once locked, the control panel 
buttons do not function unless unlocked.
OSD menu functionPress and hold  and  simultaneously for 5 seconds. Once locked, the MENU button 
on the control panel does not function unless unlocked.
Power on/off...

The OSD (On-Screen Display) menu 32
The OSD (On-Screen Display) menu
OSD menu overview
Menu nameOptions/functionsSee page
Picture• Picture Mode
• Contrast
• Brightness
• Color
• Tint
• Sharpness
• Backlight
• DCR
• Color Temp
• Input Resolution34
Sound• Vo l u m e
• Mute
• Audio Source
• Speaker35
Option• Aspect ratio
• PIP
• Video Source
• Auto Adjustment
• Clock Frequency
• Phase
• H Position
• V Position
• Ambient Light Sensor
• Auto Detection
• Touch Feature36
Setting• Language
• Overscan
• Schedule...

The OSD (On-Screen Display) menu 33
Operations in the OSD menu
Using the control panel buttonsUsing the remote control
1. Press MENU to open the OSD menu. 1. Press MENU to open the OSD menu.
2. In the OSD menu, press  or  to 
select an item.2. Press  or  to select an item.
3. Press ENTER/VIDEO SOURCE to 
confirm selections.3. Press ENTER to confirm selections.
4. Press  or  to select a feature and 
press  or  to adjust settings. Press 
ENTER/VIDEO SOURCE to save 
changes.4. Press  and  to...

The OSD (On-Screen Display) menu 34
Picture menu  
Picture ModeStandard
Contrast88
Brightness43
Color55
Tint50
Sharpness5
Backlight5
DCROFF
Color Temp9300 K
Input ResolutionAuto
:Move:Input:Exit
Picture
ENTEREXIT
NameDescription
Picture ModeSets the display mode.
ContrastAdjusts the image contrast when Picture Mode is set to 
User.
BrightnessAdjusts the image brightness when Picture Mode is set to 
User.
ColorAdjusts the color intensity when Picture Mode is set to 
User.
TintAdjusts the color tint when...

The OSD (On-Screen Display) menu 35
Sound menu
Vo l u m e8
MuteOFF
Audio SourceAudio 1
Speaker
Sound
:Move:Input:ExitENTEREXIT
NameDescription
Vo l u m eAdjusts the volume.
MuteTurns the mute function on or off.
Audio 
SourceSets the audio input source.
SpeakerSets the audio source.
External: Selects the audio output source from 
SPEAKERS (R/L) 
on the rear connector panel.
Line-Out: Selects the audio output source from 
AUDIO OUT (R/
L)
 on the rear connector panel.
Internal: Select the audio input...

The OSD (On-Screen Display) menu 36
Option menu
Aspect ratioFull
PIP
Video SourceYPbPr
Auto Adjustment
Clock Frequency16
Phase22
H Position
V Position
Ambient Light SensorOFF
Auto DetectionON
Touch FeatureOFF
Option
:Move:Input:ExitENTEREXIT
NameDescription
Aspect ratioDisplays the input image in its original aspect ratio (Original) or forces the 
display to fill the input image on the entire display area (Full).
PIP
(Picture in Picture)• ON/OFF: Turns on or off the PIP function.
• Main Input: Sets an...

The OSD (On-Screen Display) menu 37
Touch FeatureWhen turned on, Input Resolution, Aspect ratio, PIP, Clock 
Frequency, Phase, H Position, V Position, Overscan and Display 
Wall will be disabled to optimize touch performance.
This feature is only available for VGA, DVI and HDMI inputs.
The adjustment of the Clock Frequency, Phase, H Position and V Position settings is only 
required when the Auto Adjustment function does not work perfectly on certain input signals. 

The OSD (On-Screen Display) menu 38
Setting menu
LanguageEnglish
Overscan
Schedule
Display Wall
Power SaveStandard
Set Monitor ID1
Image RetentionON
Auto AdjustmentON
Advanced
Setting
:Move:Input:ExitENTEREXIT
NameDescription
LanguageSets your preferred language for the OSD menu.
OverscanTurns the HDMI overscan function on or off.
Schedule• Date and Time: Sets the current date and time. 
• Schedule: Sets when to turn on or off the display and which input source 
should be used for each schedule.
• Set...

The OSD (On-Screen Display) menu 39
Power 
SaveSets the display to enter the power saving mode when there is no signal 
detected.
• Eco: All source can enter the power saving mode, but only a VGA signal can 
wake up the display or you have to press the power button to wake up the 
display when other source is connected.
• Standard: All source can enter the power saving mode and wake up the 
display.
• Off: If no source is detected, the backlight will continue on.
• VGA Only: Only the VGA signal can enter...

Product information 40
Product information
Specifications
ItemSpecifications
T420TL550
LCD panelActive area (H x V mm) 930.24 x 523.26 1209.6 x 680.4
Pixel pitch (mm) 0.4845 0.630 x 0.630
Native resolution (pixels) 1920 x 1080 1920 x 1080
Brightness (cd/m
2) 
(typical)500 450
Contrast (typical) 1500:1 1300:1
Dynamic contrast ratio 
(DCR)4000:1 11000:1
Response time (ms) 
(typical)512
SystemBrightness (cd/m2) 
(typical)440 400
TouchTechnology Optical Dual Touches (for Win 7 only)
Resolution 32767 x 32767...