BenQ Mp720 Digital Projector Users Manual

							Positioning your projector 15
Obtaining a preferred projected image size
The distance from the projector lens to the screen, the zoom setting, and the video format 
each factors in the projected image size.
The maximum (native) resolution of the projector is 1024 x 768 pixels, which is a 4 to 3 
aspect ratio (expressed as 4:3). To be able to project a complete 16:9 (widescreen) aspect 
ratio image, the projector can resize and scale a widescreen image to the projectors native 
aspect width. This will result in a proportionally smaller height equivalent to 75% of the 
projectors native aspect height.
Thus, a 16:9 aspect image will not utilize 25% of the height of a 4:3 aspect image displayed 
by this projector. This will be seen as darkened (unlit) bars along the top and bottom 
(vertical 12.5% height respectively) of the 4:3 projection display area whenever displaying a 
scaled 16:9 aspect image in the vertical centre of the 4:3 projection display area.
When determining the position of your projector, you should consider its intended use and 
input signal aspect ratios. All inputs (other than composite Video being fed a 16:9 aspect 
signal) will display in a 4:3 aspect ratio (and will require an additional 33% display height 
than that of the scaled 16:9 aspect image projection area).
IMPORTANT: Do not select a permanent projector position based upon a 16:9 projection if you 
will ever need to select an input (other than composite Video being fed a 16:9 aspect signal).
The projector should always be placed horizontally level (like flat on a table), and positioned 
directly perpendicular (90° right-angle square) to the horizontal centre of the screen. This 
prevents image distortion caused by angled projections (or projecting onto angled surfaces). 
The modern digital projector does not project directly forward (like older style reel-to-reel 
film projectors did). Instead, digital projectors are designed to project at a slightly upward 
angle above the horizontal plane of the projector. This is so that they can be readily placed 
on a table and will project forward and upwards onto a screen positioned so that the bottom 
edge of the screen is above the level of the table (and everyone in the room can see the 
screen). 
If the projector is mounted on a ceiling, it must be mounted upside-down so that it projects 
at a slightly downward angle. 
You can see from the diagram on page 17, that this type of projection causes the bottom edge 
of the projected image to be vertically offset from the horizontal plane of the projector. 
When ceiling mounted, this refers to the top edge of the projected image.
If the projector is positioned further away from the screen, the projected image size 
increases, and the vertical offset also increases proportionately.      
When determining the position of the screen and projector, you will need to account for 
both the projected image size and the vertical offset dimension, which are directly 
proportional to the projection distance.
BenQ has provided a table of 4:3-aspect-ratio screen sizes to assist you in determining the 
ideal location for your projector. There are two dimensions to consider, the perpendicular 
horizontal distance from the centre of the screen (projection distance), and the vertical 
offset height of the projector from the horizontal edge of the screen (offset).4:3 aspect image in a 4:3 aspect display area16:9 aspect image scaled to a 4:3 aspect dis-
play area 
						

							Positioning your projector 16
How to determine the position of the projector for a given 
screen size:
1. Select your screen size.
2. Refer to the table and find the closest match to your screen size in the left columns 
labelled Screen Diameter Using this value, look across this row to the right to find the 
corresponding average distance from screen value in the column labelled Average. 
This is the projection distance.
3. On that same row, look across to the right column and make note of the vertical Offset 
value. This will determine the final vertical offset placement of the projector in 
relation to the edge of the screen.
4. The recommended position for the projector is aligned perpendicular to the 
horizontal centre of the screen, at the distance from the screen determined in step 2 
above, and offset by the value determined in step 3 above.
For example, if you are using a 120 inch screen, the average projection distance is 4691 mm 
and with a vertical offset of 46 mm.
If you place the projector in a different position (to that recommended), you will have to tilt 
it down or up to center the image on the screen. In these situations, some image distortion 
will occur. Use the Keystone function to correct the distortion. See Correcting keystone on 
page 28 for keystone correction.
How to determine the recommended screen size for a 
given distance:
This method can be used for situations where you have purchased this projector and would 
like to know what screen size will fit in your room.
The maximum screen size is limited by the physical space available in your room. 
1. Measure the distance between the projector and where you want to position the 
screen. This is the projection distance.
2. Refer to the table and find the closest match to your measurement in the average 
distance from screen column labelled Average. Check that your measured distance is 
between the min and max distances listed on either side of the average distance value.
3. Using this value, look across that row to the left to find the corresponding screen 
diameter listed in that row. That is the projected image size of the projector at that 
projection distance.
4. On that same row, look across to the right column and make note of the vertical Offset 
value. This will determine the final placement of the screen in relation to the 
horizontal plane of the projector. 
For example, if your measured projection distance was 4.5m (4500mm), the closest match in 
the Average column is 4617mm. Looking across this row shows that a 3000mm (3m) screen 
is required. If you can only obtain imperial sized screens, the listed screen sizes on either side 
of the 3m screen are the 9 and 10 screens. 
Checking the min and max projection distance values for these screen sizes, indicates that 
the 4.5m measured projection distance will fit these screens too. The projector can be 
adjusted (using the zoom control) to display on these different screen sizes at that projection 
distance. Be aware that these different screens have different vertical offset values. 
						

							Positioning your projector 17
• The recommended focus range is from 1500-8000 millimeters (1.5-8 meters).
• There is 3%-5% tolerance among these numbers due to optical component variations.
Screen DiameterDistance from Screen in mmVertical Offset in mm
FeetInchesmmMin length 
(with max. 
zoom)Ave r a g eMax length 
(with min. 
zoom)
4 48 1219 1745 1876 2007 18
1500 2148 2199 2250 23
5 60 1524 2182 2345 2509 23
6 72 1829 2618 2815 3011 27
2000 2863 3078 3293 30
7 84 2134 3055 3284 3513 32
8 96 2438 3491 3753 4015 36
2500 3579 3848 4116 38
9 108 2743 3927 4222 4516 41
3000 4295 4617 4939 45
10 120 3048 4364 4691 5018 46
3500 5011 5387 5763 53
12 144 3658 5236 5629 6022 55
4000 5727 6157 6586 60
15 180 4572 6545 7036 7527 69
5000 7158 7695 8232 75
18 216 5436 7855 8444 9033 82
6000 8590 9234 9878 90
25 300 7620 10909 11727 12545 114
Maximum zoom
Minimum zoom
Projection distanceCenter of lens Screen
Offset 
						

							Connection 18
Connection
When connecting a signal source to the projector, be sure to:
1. Turn all equipment off before making any connections.
2. Use the correct signal cables for each source.
3. Ensure the cables are firmly inserted. 
In the connections shown below, some cables may not be included with the 
projector (see Shipping contents on page 6). They are commercially available 
from electronics stores.
Wireless connection (optional)
The Wireless module allows for simultaneous wireless connectivity to multiple computers 
which are Wi-Fi enabled. This saves you from having to swap data cables between the 
projector and different computers during a presentation. Wi-Fi connectivity is most suitable 
for situations where multiple presenters with separate notebooks are required to seamlessly 
present individual presentations, like in meetings, conferences, lectures and, classrooms. 
The Wireless module connects and attaches to the rear of the projector through the DVI-I 
socket.
Whilst the Wireless module is attached to the projector, you cannot use the DVI-I socket for 
DVI cable connections.
Even though the projector may be using a wireless data connection, it still requires physical 
connection to a power outlet using its power cable.
You can purchase a BenQ wireless module from 
BenQ retailers. You should attach the wireless 
module to the projector before you connect any 
other cables. Refer to the user’s manual 
enclosed with the wireless module for 
connection and operation details.
Cable connection
Connecting a computer or monitor
Connecting a computer
The projector provides a VGA and DVI input sockets that allow you to connect it to a 
notebook or desktop computer. 
Additionally, you can also connect the projector to a computer via the USB cable so you can 
perform paging operations of the application on the PC or notebook. (see Remote paging 
operations on page 30).
Projector with the wireless module 
						

							Connection 19
To connect the projector to a notebook or desktop computer (either through a
VG A  c a b l e  o r  VG A-DV I  c a b l e ) :   
The final connection path should be like that shown in the following diagram:
• A Mac adapter (an optional accessory) is needed if you are connecting legacy version 
Macintosh computers. 
• Many notebooks do not turn on their external video ports when connected to a projector. 
Usually a key combo like FN + F3 or CRT/LCD key turns the external display on/off. 
Locate a function key labeled CRT/LCD or a function key with a monitor symbol on the 
notebook. Press FN and the labeled function key simultaneously. Refer to your 
notebook’s documentation to find your notebook’s key combination.
•With a VGA cable: •With a VGA-DVI cable:
1. Take the supplied VGA cable and 
connect one end to the D-Sub 
output socket of the computer.
2. Connect the other end of the VGA 
cable to the D-SUB/COMP IN 
signal input socket on the projector. 1. Take a VGA-DVI cable and connect 
the VGA end to the D-Sub output 
socket of the computer.
2. Connect the DVI end of the VGA-
DVI cable to the DVI-I signal input 
socket on the projector. 
3. If you wish to use the remote paging function (see Remote paging operations on 
page 30), take the supplied USB cable and connect the larger end to the USB port 
of the computer, and the smaller end to the USB socket on the projector.
4. If you wish to make use of the projector (mixed mono) speaker in your 
presentations, take a suitable audio cable and connect one end of the cable to the 
audio output socket of the computer, and the other end to the AUDIO IN socket of 
the projector. 
5. If you wish, you can use another suitable audio cable and connect one end of the 
cable to the Audio OUT socket* of the projector, and the other end to your 
external speakers (not supplied).
*The audio output is a mixed mono signal and controlled by the projector Volume 
and Mute settings.
notebook or desktop computer
USB cableAudio cable
VGA 
cableVGA-DVI 
cableAudio cable Speakers
or 
						

							
Connection
20
Connecting a monitor
If you want to view your presentation close-up on a monitor as well as on the screen, you 
can connect the RGB signal output socket on the projector to an external monitor with a 
VGA cable by following the instructions below.
Note: The D-SUB output only works when an  appropriate D-SUB input is made to the 
projector. Be sure the projector is connecting with the computer using the D-SUB IN 
socket, not the DVI socket.
To connect the projector to a monitor (either through a VGA cable or VGA-
DVI cable):
The final connection path should be li ke that shown in the following diagram:
•With a VGA cable: •With a VGA-DVI cable:
Note: You monitor must be equipped with a 
DVI input socket.
1. Connect the projector to a computer as described in  Connecting a computer on 
page 18 .
2. Take a suitable VGA cable (only one  supplied) and connect one end of 
the cable to the D-Sub input socket 
of the video monitor.
3. Connect the other end of the cable  to the D-SUB OUT socket on the 
projector. 2. Take a VGA-DVI cable and connect 
the DVI end of the cable to the DVI 
input socket of the video monitor.
3. Connect the VGA end of the cable to  the D-SUB OUT socket on the 
projector.
notebook or desktop computer
VGA cable
VGA-DVI cable
VGA cable
(VGA)(DVI)
or 
						

							Connection 21
Connecting Video source devices
This section describes how to connect the projector to Video source devices using video 
cables. Video cable connections are recommended for Video presentations. 
This projector also supports data (graphic) PC connection using Wi-Fi. Wi-Fi connection is 
not recommended for Video presentations. See Wireless connection (optional) on page 18.
You can connect your projector to various Video source devices that provide any one of the 
following output sockets:
• Component Video
•S-Video
•Video (composite)
You need only connect the projector to a Video source device using just one of the above 
connecting methods, however each provides a different level of video quality. The method 
you choose will most likely depend upon the availability of matching terminals on both the 
projector and the Video source device as described below:
Best video quality
The best available video connection method is Component Video (not to be confused with 
composite Video). Digital TV tuner and DVD players output Component Video natively, so 
if available on your devices, this should be your connection method of choice in preference 
to (composite) Video.
See Connecting a Component Video source device on page 22 for how to connect the 
projector to a component video device.
Better video quality
The S-Video method provides a better quality analog video than standard composite Video. 
If you have both composite Video and S-Video output terminals on your Video source 
device, you should elect to use the S-Video option.
See Connecting an S-Video source device on page 23 for how to connect the projector to 
an S-Video device.
Least video quality
Composite Video is an analog video and will result in a perfectly acceptable, but less than 
optimal result from your projector, being the least video quality of the available methods 
described here.
See Connecting a composite Video source device on page 24 for how to connect the 
projector to a composite Video device.
Connecting Audio
The projector has a built-in mono speaker which is designed to provide basic audio 
functionality accompanying data presentations for business purposes only. It is not designed 
for, nor intended for stereo audio reproduction use as might be expected in home theatre or 
home cinema applications. Any stereo audio input (if provided), is mixed into a common 
mono audio output through the projector speaker.
If you wish, you can make use of the projector (mixed mono) speaker in your presentations, 
and also connect separate amplified speakers to the Audio Out socket of the projector. The 
audio output is a mixed mono signal and controlled by the projector Volume and Mute 
settings.
If you have a separate sound system, you will most likely want to connect the audio output 
of your Video source device to that sound system, instead of to the mono audio projector.  
						

							Connection 22The audio connections illustrated in the following sections are provided for informational 
purposes only. You need not connect audio to the projector if there is an alternate sound 
system available, or if audio is not required.
Connecting a Component Video source device
Examine your Video source device to determine if it has a set of unused Component Video 
output sockets available: 
• If so, you can continue with this procedure.
• If not, you will need to reassess which method you can use to connect to the device.
To connect the projector to a Component Video source device (either through
a Component Video to VGA adaptor cable or DVI cable):
The final connection path should be like that shown in the following diagram: •With a Component Video to VGA 
(D-Sub) adaptor cable:•With a DVI cable:
1. Take the (optional accessory) 
Component Video to VGA (D-Sub) 
adaptor cable and connect the end 
with 3 RCA type connectors to the 
Component Video output sockets of 
the Video source device. Match the 
color of the plugs to the color of the 
sockets; green to green, blue to blue; 
and red to red.
2. Connect the other end of the 
Component Video to VGA (D-Sub) 
adaptor cable (with a D-Sub type 
connector) to the D-SUB/COMP IN 
socket on the projector.1. Take a DVI cable and connect one 
end of the cable to the DVI output 
socket of the Video source device.
2. Connect the other end of the cable 
to the DVI-I socket on the projector.
3. If you wish, you can use another suitable audio cable and connect one end of the 
cable to the AUDIO OUT socket of the projector, and the other end to your 
external speakers (not supplied).
A/V device
Component Video to 
VGA (D-Sub) adaptor 
cable Audio 
cables
Audio 
cable Spe ak er s
DVI 
cable 
						

							Connection 23
• The projector is only capable of playing mixed mono audio, even if a stereo audio input 
is connected. See Connecting Audio on page 21 for details.
• Component Video is the only video output that delivers native 16:9 aspect ratio picture.
If you connect the projector to a High Definition TV (HDTV) tuner, the follow ing standards 
are supported:
If the selected video image is not displayed after the projector is turned on and the correct 
video source has been selected, check that the Video source device is turned on and 
operating correctly. Also check that the signal cables have been connected correctly.
Connecting an S-Video source device
Examine your Video source device to determine if it has an unused S-Video output socket 
available: 
• If so, you can continue with this procedure.
• If not, you will need to reassess which method you can use to connect to the device.
To connect the projector to an S-Video source device:
1. Take a S-Video cable and connect one end to the S-Video output socket of the Video 
source device.
2. Connect the other end of the S-Video cable to the S-VIDEO socket on the projector.
3. If you wish, you can use another suitable audio cable and connect one end of the cable 
to the AUDIO OUT socket of the projector, and the other end to your external 
speakers (not supplied).
The final connection path should be like that shown in the following diagram:
• The projector is only capable of playing mixed mono audio, even if a stereo audio input 
is connected. See Connecting Audio on page 21 for details.
• If the selected video image is not displayed after the projector is turned on and the 
correct video source has been selected, check that the Video source device is turned on 
and operating correctly. Also check that the signal cables have been connected 
correctly.
• 480i • 480p
• 576i • 576p
• 720p (50/ 60 Hz) • 1080i (50/ 60 Hz)
A/V device
S-Video cable 
Audio 
cables 
						

							Connection 24
• If you have already made a Component Video connection between the projector and this 
S-Video source device using Component Video connections, you need not connect to 
this device using an S-Video connection as this makes an unnecessary second 
connection of poorer picture quality. See Connecting Video source devices on page 21 
for details.
Connecting a composite Video source device
Examine your Video source device to determine if it has a set of unused composite Video 
output sockets available: 
• If so, you can continue with this procedure.
• If not, you will need to reassess which method you can use to connect to the device.
To connect the projector to an composite Video source device:
1. Take the Video cable and connect one end to the composite Video output socket of the 
Video source device.
2. Connect the other end of the Video cable to the VIDEO socket on the projector.
3. If you wish, you can use another suitable audio cable and connect one end of the cable 
to the AUDIO OUT socket of the projector, and the other end to your external 
speakers (not supplied).
The final connection path should be like that shown in the following diagram:
• The projector is only capable of playing mixed mono audio, even if a stereo audio input 
is connected. See Connecting Audio on page 21 for details.
• If the selected video image is not displayed after the projector is turned on and the 
correct video source has been selected, check that the Video source device is turned on 
and operating correctly. Also check that the signal cables have been connected 
correctly.
• You need only connect to this device using a composite Video connection if Component 
Video and S-Video inputs are unavailable for use. See Connecting Video source 
devices on page 21 for details.
A/V device
Video cable 
Audio cables