BenQ PointWrite User Manual

PointWrite User Manual

PT20

V1.00

Table of contents

Shipping Contents........ 3

Product Overview........ 4

About Touch Module .............................4

Dimensions ............... .......... ........... .......... ..5

Preparation for Setup.. 6

Environment Condition...........................6

Surface Condition.....................................7

Projector Requirements........................10

Touch Module Installation ....................11

Driver Installation...................................13

Connection...............................................14

Configuration

Setting ........................16

Alignment

Instructions.................17

Alignment View .......................................17

Adjustment for Touch Module

Laser Curtain...........................................18

PointWrite

Calibration.................. 21

Specifications..............22

2

Shipping Contents

PointWrite User Manu

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V1
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The PointWrite touch module is a touch transmitter for the BenQ
PointWrite interactive projector. To use the touch module, please find the
standard accessories below and follow this manual.

123

PointWrite Touch

Module

Quick manual Dummy pen with pen

nibs x 2

456

Mini USB cable Alignment masks Wrist strip x 2

7

Tape x 2

1. PointWrite Touch Module

2. Quick Start Guide: Shortcut of how to use the PointWrite touch

solution.

3. Dummy pen with pen nibs: 2 extra pen nibs for dummy pen.

4. Mini USB Cable: Connect to supply power to the touch module.

5. Alignment masks: For laser curtain alignment.

6. Wrist strip x 2

7. Tape x 2

Shipping Contents 3

About Dummy Pen

For better touch performance, keep the pen nib clean.

When replacing the pen nib, take it
from the dummy pen.

Cover

Top screw

Left screw Right screw

Attach tape area

Touch module head

Mounting hole Mounting hole

LED indicator

USB port

When replacing the pen nib on the dummy pen, take it from the dummy pen.

Product Overview

About Touch Module

Front View Rear View

Green LED: normal; orange LED: abnormal.

Right View

Shipping Contents4

Dimensions

198.9 mm

69.6 mm

42.1 mm

Shipping Contents 5

Preparation for Setup

Environment Condition

The touch module functions with an PointWrite interactive projector for
scalable finger touch functionality, transforming any flat surface into a virtual
interactive whiteboard.

For optimal finger touch quality, follow these guidelines:

1. Close all window curtains.

2. Select a projection area away from direct sunlight to prevent writing
interference.

3. Keep infrared devices, such as: infrared microphones, away from the
front side of the screen to prevent interference.

4. Remove accessories, such as: watches or necklaces, with a reflective
surface to prevent interference.

Touch area

Touch area Touch area

Preparation for Setup6

Surface Condition

Optimal finger touch quality is dependent on the selected surface condition.
You can attach the touch module on a wall surface or existing board. It is
important to choose a smooth and flat surface area free of protrusions.

In the event of a projection surface not conducive to finger touch
functionality, select the PointWrite pen as the pointing method for the
classroom.

Selecting a Wall Surface

• Select a wall that is straight and flat, without any protruding objects on it.

• Writing directly on the wall with the pen can damage the wall. Test the
wall surface by writing on it with the dummy pen before you install the
touch module.

Using on the Wall Surface

Consider the following factors when selecting a wall surface to project your
image onto:

• Project on a smooth, semi-gloss painted surface to reduce glare from the
projector, to achieve optimal touch quality and to reduce wear on the pen
nib.

Using on a Dry-erase Board

• Attach a dry-erase board to the wall if you’re projecting on a textured
surface. A dry-erase board is a flat surface that works well with your
interactive projector and allows you to write smoothly in digital ink.

Preparation for Setup 7

Measuring the Flatness of the Surface

< 2 mm <2 mm

< 2 mm < 2 mm

1. Place a six-foot carpenter’s level horizontally across the projection area
(board).

2. Locate the point on the level furthest away from the projection area.

3. Measure the surface flatness on both sides of the projection area.

• Overall finger touch performance is influenced by the flatness of the

projection surface.

• A flatness variance of 2mm in any direction ensures optimal finger touch

performance.

Preparation for Setup8

Surface Obstructions

Maintain the projection area clean and free of obstructions. The following are
common obstruction examples:

• Cables or wires that hang into the projected image.

Leave extra space between the cables and the projected image so you can
make image adjustments later.

Preparation for Setup 9

Projector Requirements

The PointWrite touch module is only available for BenQ PointWrite series
interactive projector. Make sure the PointWrite camera module is installed
properly before you setup the PointWrite touch module.

• For more information, please refer to the PointWrite camera module

User Manual or Quick Guide when installing.

• To ensure the projector provides power to the PointWrite Touch

module, turn on the USB Power Switch function in the OSD menu.

• PointWrite touch module is compatible with selected PointWrite camera

module and projector.

Preparation for Setup10

Touch Module Installation

1. Center line of touch area
Touch module

Frame
Surface
Touch area

3.Gap:100-150mm

50mm

50mm 50mm

Screen Tolerance

# Item Specification

1 Horizontal Position Center line of touch area.
2 Vertical Position Ceiling Mounting: Top of the screen with Gap.
3 Gap Min: 100 mm, max: 150 mm

4Orientation

5Touch Area

Head of laser module should be face to touch
screen.

Min: 65”, max: 100” (without external lighting
interference)

The ambient light or direct sun light may impact the screen size of touch area
or cause interference.
In this case, make screen size smaller or turn to pen mode with PointWrite
pen for better writing quality.

Preparation for Setup 11

Mounting Touch Module

1. Attach the tape strip on the rear side of the PointWrite touch module.

2. Follow the instructions above to position the touch module on the
screen.

3M double tape (thickness: 1mm) is recommended.

3. Turn over the front cover.

4. Secure the touch module to the wall with screws.

5. Refer to page 17 to make sure the touch module is properly installed in
the center of the projection screen.

Preparation for Setup12

Driver Installation

When you are the first time to use this PointWrite Module, please install set­up driver for Configuration setting.

1. Please go to below BenQ Display Website to download PointWrire Set­up driver https://business-display.benq.com/en/findproduct/projector/
accessory/pointwrite-pt20.html
Go to BenQ Website >> Search PT20 >> Go to “Download Page”.

2. Follow the on-screen instructions to install the driver.

3. Complete the installation.

Driver Installation Complete

The PointWrite icon will be created on the desktop.
The installation folder will be created on C: directory.

• 64-bit Windows: C:\Program Files (x86)\BenQ\PointWrite 2.0

• 32-bit Windows: C:\Program Files\BenQ\PointWrite 2.0

Remark:
Only First time using the PointWrite module need to install set- up driver for

Configuration setting, the subsequent users can only plug the USB cable to
connect to PC to start the interaction quickly without driver installation.

Preparation for Setup 13

Connection

Connecting the PointWrite to PC

Use the USB cable1 to connect the PointWrite to PC. Plug the USB mini-B
end into the projector and plug the USB type-A end into PC.

Check “Device Manager” from your computer to make sure that PointWrite
device is recognized by your computer.

1.

A USB cable of 2 meters is provided. Use a USB repeater cable If you need to extend
the length.

Preparation for Setup14

Connecting Touch Module

Use the USB cable to connect the touch module for power supply.

Connect Touch Module to Projector (Recommended)

To prevent the connector from coming off, adjust the screw after inserting a
USB cable.

1. Loosen the screw on the holder and move the holder down.

2. Insert a USB cable.

3. Move the holder up to holder the USB connector.

4. Secure the screw on the holder.

USB type-A power is available for selected projector model.

5V USB adapter is not allowed!

Charging of the device through an adapter is not recommended and may
damage the touch module.

Preparation for Setup 15

Configuration Setting

1

2

7

3

6

4

5

1. PointWrite Mode:

• Pen Mode: Default selection

• Finger Touch Mode: Only available when PointWrite Module
works with BenQ PointWrite Touch module. When selecting
Finger Touch mode, pen and finger can be used simultaneously.

2. PointWrite Option:

• Ceiling Mount Mode: Click this item if you mount the projector on
the ceiling. When the projector is placed on the table, do not click
this item.

• Rear Screen Mode: If the projector is installed on the rear screen
system, click this item.

3. Resolution: Select Projector resolution.

4. PointWrite Alignment: See "Alignment View" on page 17.

5. PointWrite Calibration: See "PointWrite Calibration" on page 21.

6. PointWrite Language: The default language is the same as the
language for your operating system. If you want to change the language,
click on and then language list will display. After selecting

your preferred language, quit the PointWrite and start the
PointWrite again.

7. Information: Shows the camera firmware version.

Select Finger Touch Mode during the setting process.

Configuration Setting16

Alignment Instructions

• Right side conflict • Left side conflict• Upper side conflict

Alignment View

The PointWrite Alignment function is to set the orientation of the
PointWrite to the screen.

Alignment View: When clicking on the "Alignment View", the screen image
is displayed on the alignment view as illustrated.

Ensure the touch module is in the middle of the screen and the triangle on
the Alignment View is aligned with the touch module.

If the screen image is not in the center, the calibration will fail. Please make
sure the PointWrite module is attached to the projector properly.

Connect the USB cable for touch module and go to "Adjustment for optimal

height of Touch Module Laser Curtain" on page 20 for alignment instructions.

To avoid active touching , please connect the USB cable after entering
Alignment View.

Alignment Instructions 17

Adjustment for Touch Module Laser Curtain

Laser curtain

Laser
curtain

Screen
board

Gap
Height

Top screw

Left screw

Right screw

Top screw Top screw

Left screw Left screw

Right screw Right screw

The laser curtain is a perfect plane to cover the screen in max fan angle of
180 degrees. The laser curtain is required to be parallel to the surface with
the optimal gap for the effective finger touch performance.

How to Adjust Touch Module Laser Curtain

To have the best performance of touch module, adjust the laser curtain using
a hex key on the screws.

Pitching control

Adjust top screw, the laser curtain goes up and down as the following image.

Adjust left screw, the left side of laser curtain goes up and down as the
following image.

Adjust right screw, the right side of laser curtain goes up and down as the
following image.

Alignment Instructions18

Left screw

Right screw

Left screw

Right screw

Top screw

Adjust the reflection
laser curtain
horizontally

Before
Adjustment

After
Adjustment

1. Adjust reflection of Touch Module Laser Curtain horizontally.

Alignment Instructions 19

2. Adjustment for optimal height of Touch Module Laser Curtain

Lower reflector

Higher reflector

5mm
5mm

Mask 2 Mask 1

Mask 3Mask 4

Reflection of
mask 4

Reflection of
mask 2

Reflection of
mask 3

Reflection of
mask 1

Ceiling Mounting

Reflected Points on

the Mask

Height of Laser

Curtain

1 point 5 - 10 mm
2 points < 5 mm
3 points Around 5 mm

Height of Laser
Curtain

The alignment masks help you to find the optimal height of the laser curtain
and optimal touch performance.

• Using the Alignment Mark

Mounting Position of Alignment Mark

In the camera view of PointWrite, The alignment mark reflector is shown like
below picture.

The number of bright spots reflected on the mask represents the height of
the laser curtain:

Alignment Instructions20

We recommend the number of highlights on each mask as the following
table:

Attached Position

Mask 1, 2 Upper side of the screen 3 points
Mask 3, 4 Bottom side of the screen 3 points

Adjust the height of the laser curtain depending the difference installation
environment.

PointWrite Calibration

PointWrite provides two kinds of calibration methods: auto calibration and
manual calibration.

Auto calibration: Click on and the calibration process will run
automatically.

When you choose this method, white image is shown on the screen and the
pattern image is displayed.

Suggested Reflected Points

on the Mask

Manual calibration: Click on and calibration window will be

projected on the screen.
Use the PointWrite pen to click on the center of calibration cursor

immediately after it appears. Then the next cursor will display. Repeat this
process until the last calibration cursor disappears.

Caution: In rare circumstances, auto calibration may fail or accuracy may be
low. In this case, please execute the manual calibration.

Alignment Instructions 21

Specifications

Touch module

Model Name PT20
Operating Voltage 4.8 ~ 5.2V
Power Consumption Max 500 mA
USB Type (Power) Mini USB B type
Power Source Power via USB type A from projector
USB Cable Distance Max 2 meters
Wavelength 940 nm ± 15 nm
Fan Angle Max : 180° (2 laser beams)
Rolling Control Range Max 4°
Pitch Control Range Max 9°
Safety Class 1
Dimension 198.9 x 69.6 x 42.1 mm
Weight 238 g (with cover)

General function

Camera Type
Multi Pen Supported Up to 10 touch points (Pen/Finger)

Response Time 0.016 sec
Refresh Rate 60 Frames/sec
Calibration Auto / Manual
Dual screen Calibration Yes

Selected series of PointWrite camera module
(PW30U, PW40U)

Environment Specification

Storage Temperature

Operation Temperature

Dual screen requires another dual screen driver, which can be download on
product web page.

Specifications22

-20°C ~ 60°C (-4°F ~ 140°F)
Humidity: 10% ~ 90% RH

0°C ~ 40°C (32°F ~ 104°F)
Humidity: 10% ~ 90% RH