IGITAL ROJECTION ACILITIES USING THE DIGITAL …wilmslowguild2013copy.wdfiles.com/local--files/downloads/... · extension cable for the projector into one of the six sockets on the

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DIGITAL PROJECTION FACILITIES

ProjectionFacilities15.doc Issue 15, 22 December 2008. Page 1 of 13

USING THE DIGITAL PROJECTORS AND OTHER PRESENTATION EQUIPMENT

BY MICHAEL WOOD

A Guide to linking a laptop to the ceiling‐mounted Sony CX61 and CX70 digital projectors in the Small Hall, Lecture Room 1, Lecture Room 2, and Craft Room 1, and using the associated audio and video presentation

equipment in these rooms.

CONTENTS Background

Introduction

Setting‐up to use a laptop

After your session

Note on Laptop Monitors

Audio Connection

Setting‐up to use DVD or VHS players

Menu Settings of the CX61 Projector

Equipment and Connection Diagrams

Acknowledgement

BACKGROUND Each room has a similar installation, with Sony CX61 or CX70 projector mounted from the ceiling, with cable

connections for the interfaces, and a power supply.

A small trolley in each room carries the Guild’s video and audio equipment. This trolley is not intended as a desk for a laptop or computer. You should use a table in whatever position is convenient to you and your

audience. Suitable extension cables are available for the monitor connection, to allow flexibility of working position.

There is a cable terminal behind this trolley, housing the cables that link to the projector, and audio speaker

leads to the two wall‐mounted speakers.

To use the equipment you need to collect the appropriate box of remote controls for your room from the

office behind reception; please do return the box there afterwards. The video equipment in each room is different; hence the different sets of remote controls for the several rooms. Spare batteries for the remotes

are available at the same location. Some long VGA leads are also kept here in case you need to link to a laptop at a fair distance.

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Page 2 of 13 Issue 15, 22 December 2008. ProjectionFacilities15.doc

The operation of your laptop, and of the VHS and DVD players is beyond the scope of this note, which is

concerned only with how to connect the equipment so that its output can be seen projected on the screen, and/or its audio be played through the installed audio systems.

INTRODUCTION Your laptop needs to have a standard VGA socket (HD D‐sub 15‐pin female), or an adaptor to match it to VGA if

it has a miniature VGA or a digital monitor output (DVI). A suitable adaptor is usually supplied with your laptop.

The Sony projector and your laptop are both active devices that communicate one with another. The laptop

doesn’t simply send a display signal to a dumb projector.

The projector is ceiling mounted, and is normally pre‐adjusted to fill the width of the top part of the large pull‐

down screen. It can project images from computers and from video equipment. Three or four high‐quality signal cables link to it and terminate in a small cabinet to the right of the screen. The cables are labelled with

their function, and are:

(1) A VGA cable with a standard HD D‐sub 15 pin socket connector (which you use for linking a

laptop);

(2) An S‐video lead with yellow miniature DIN connector;

(3) A composite video cable with a yellow phono end;

and in the Small Hall only

(4) A stereo audio cable with red and white phono connectors.

The tails of these cables are kept coiled and stowed neatly on the square cup‐hooks in the cabinet when they

are not connected. They are best kept off the floor to avoid damage. At the end of your session please leave everything as tidy as you would expect to find it.

The projector is not permanently connected to the mains. Its mains supply is provided through an extension cable terminating in a 13‐amp socket mounted on the ceiling near the projector, with the cable running in

trunking to emerge from the wall near the cabinet.

The audio‐video trolley has a fully‐switched 6‐way mains extension board fixed to its right‐hand side. Plug the

trailing lead of this extension board into the 13‐amp ring main socket on the wall nearby. Plug the white mains extension cable for the projector into one of the six sockets on the extension board. Switch the socket ON.

Another socket on the extension is usually used for the audio system with its‐wall mounted speakers. A third might be used for a video player, and a fourth for a DVD player. You may wish to plug your laptop charger into

a socket, so that it is running on mains, thus avoiding “battery saving” problems. Do remember to switch this mains socket on the extension board to ON, or you will still be running on battery! You might use the sixth

socket for a desk lamp.

Incidentally, the (new) trolleys are provided to house the Guild’s AV equipment, and it is assumed that you will

use a table for your own laptop and other equipment. We recognise that the glass is not suitable for a mouse, and suggest that you use a mouse mat if not using your track‐pad.

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The short VGA cable, male‐male, is used to link the VGA socket on the black cable and the similar VGA socket

on your laptop or its VGA adaptor. A longer version is available, so that you can work from a centre aisle, for instance, but be forewarned that some older laptops may not work well on the very long VGA connection that

this usage implies. Please remember to leave these cables at the Guild. They are marked “Wilmslow Guild”.

If you use one of the Guild laptops please ensure that you pack the mouse and the laptop power pack and its

leads with the laptop. They don’t stay with the room controls.

SETTING UP TO USE A LAPTOP 1. Ensure that both the projector and the laptop are off (powered down). Do not power up either machine

just yet.

2. Link the monitor output port on the laptop to the male‐male VGA cable, with any necessary adaptor at the laptop end. Note that VGA sockets are handed, with a wide and narrow side. If the two connectors do not

push together easily something is wrong. Make sure that all the plugs and sockets are firm, and properly aligned. The thumb screws on VGA cables are provided only to secure the connection once the link has

been made to the equipment. (These screws are not useful when two cables are connected.)

3. The other end of the male‐male VGA cable attaches to the black one in the cabinet labelled VGA, which

links it to the projector.

4. Check again that you have switched to ON the socket supplying power to the projector circuit. When the

power is on, you should see a tiny red light surrounding one of the buttons on downward‐facing ‘top’ of the projector. If not, check that you have switched on the corresponding socket on the 6‐way extension

board, and that the board itself is plugged into the wall.

5. Point the remote control at the front or back of the projector and press the green power button. The

mains indicator lamp on the projector will flash green. The fan should run quietly. Soon – within a minute ‐ the mains indicator lamp will go to steady green, and you’ll see a blue image on the screen.

6. If the projector is at factory settings (as it should be) it will work out the geometry of the screen and set itself up. It should project a sharp blue screen image with a small window near the top left of the screen

showing “Input” and one of “Input A”, “Video”, or ”S-Video” which are its three input sources. It might be set to auto search round these three sources to detect an input signal. The Input button on the remote

also causes the projector to switch round these three sources. It cycles through: Input A — Video — S-Video — Input A — …You want “Input A” which is the VGA input. (Note that the previous user may have been playing DVD or VHS tapes, and left the projector set to another source.)

7. Now boot your laptop, or wake it from sleep. The projector should recognise the signal and show output (probably your desktop) on the big screen.

8. On the laptop you may have to press function key at the top of the keyboard such as F7, or perhaps F8 or another F‐key according to your laptop make, to tell the laptop to send a signal to the external monitor

socket.

You may need to hold down the modifier “f” key usually at bottom left of the keyboard as you tap the

appropriate function key. This is because the function keys have two roles, first as function keys, such as F1 for help, and secondly to tell the laptop to change one of its interface settings, such as the sound level,

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or the monitor output or to turn a wireless card on or off. The laptop can be set so that one or the other of

these usage is the default, while the role must be invoked by holding down the F key.

Normally the laptop cycles through various combinations of internal and external monitor options using

such a key. See the section Note on Laptop Monitors below for more advice, including details of which particular function key the various manufacturers are known to use to control the VGA output.

9. The projector will align the pixels in your image with the pixels of its internal image. This is called Auto Pixel Alignment. Press the key APA on the remote and it will do this for you again, and report “Complete!” when it is done.

10. The Lens button on the remote control cycles between “Lens Focus” and “Lens Zoom” with each press.

The screen displays Lens Focus or Lens Zoom according to which you have chosen. It will time‐out in a few moments if you do nothing, and clear the screen message. Use the left and right arrow keys on the

remote to adjust either lens setting. Always set Zoom first, and then reset the Focus afterwards. Zooming tends to upset the focus of the lens. Note that the projector is normally set to fill the screen

width at the top of the screen, unless someone has set it to some other arrangement. You should only need to check the focus, rather than zoom the image to fit.

When you are close to the screen you can see the actual fine matrix of the internal screen of the projector as a very fine grid in the projected image. Use this as a guide to sharp focus, rather than the detail of the

projected picture.

11. Do remember that the projector is mounted high up in the middle of the ceiling. You need to point the

remote control somewhere near it to be effective. There are infra‐red detectors at both the front and the back. (It is very tempting to point the remote control to the screen prompts rather than to the projector,

so that sometimes nothing happens, which can be very frustrating!)

12. If you should want to position your laptop down the room instead of to the side of the screen, there are

long 7 metre or 10 metre VGA cables that can be used to make the link to the black VGA cable. These vary in the different sized rooms. Extension cables are male–female, whereas the usual short VGA monitor

cable is male‐male. Satisfactory performance with long VGA cables cannot be guaranteed, particularly with older laptops. It is best to do a trial beforehand.

13. A useful shortcut in PowerPoint is to press B to give a black screen, when you want to divert the attention of your audience away from the screen image for a while. Press B again when you want the projector

display restored. Similarly, pressing W gives a white screen, and another W restores the original image.

You can also mute the picture with the Mute key on the remote control. This control is a rocker switch

that you can use to mute/restore the picture (PIC) at one end, or ‐ if you are using the audio connection in the Small Hall ‐ the sound (AUDIO) at the other end of the rocker. The control is a push‐push; push to

mute, push again to restore the picture or audio.

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AUDIO CONNECTION. The Small Hall has a Cassette/CD audio stack, with INPUT phono connectors at the back for the auxiliary audio

input, while the other three rooms have a more recent CD audio stack with a 3.5 mm stereo jack on the front for the auxiliary audio input. Suitable long audio cables are provided to link the typical 3.5 mm stereo audio

output jack of a laptop either to the twin phono connectors, or to the 3.5 mm jack sockets in the other two rooms.

1. Plug a 3.5 mm jack into the stereo headphone/audio out port on your laptop, but take care not to confuse this with the very similar microphone port.

2. Plug the phono connectors into the red and white IN phono sockets on the back of the Cassette/CD audio unit (in the Small Hall), or plug the other 3.5 mm jack plug into the Auxiliary input on the front of the CD

audio stack (in the other two rooms).

3. Check that the power cable of the audio stack is plugged into the extension board, and that the socket is

switched ON. Press the red illuminated mains button on the front panel of the stack, and then the Auxiliary button. The round knob adjusts the volume. You should hear stereo sounds of your laptop from

the wall mounted speakers.

If you get no sound check that sound is not muted on your laptop, usually controlled by a group of

three keys: mute/increase volume/decrease volume: The key‐top markings are a little speaker with none (mute), 1 sound‐wave (reduce volume) or several sound‐waves (increase volume).

Perhaps check that the laptop is actually giving sound output by unplugging the audio lead from the laptop jack socket, and listening to the laptop’s internal speaker?

You might by accident have plugged the audio lead into the microphone input socket on the laptop, rather than into the headphone output socket. Both are usually almost identical 3.5 mm jacks

identified only by little icons of a microphone and a pair of headphones.

SETTING‐UP TO USE DVD OR VHS PLAYERS. The Guild has a variety of different VHS and DVD players, some rooms have separate units (VHS and DVD) and

some have combined units. The units use composite video and/or S‐video connections. All rooms provide both kinds of connection to the projector, so any unit can be used in any room.

The detailed operation of these video units is beyond the scope of this note.

1. Connect the player to the mains if necessary but do not power it up yet.

2. The player may be connected to the projector already. It may use composite video or S‐video. If necessary, connect it using the appropriate cable. Some players use a plug‐in Scart adaptor to generate S‐

video and/or composite video. The video cable plugs and sockets are usually yellow.

3. Connect the player’s audio output to the Audio system. See the previous section for more details.

4. Power on the DVD/video player, insert a DVD or video cassette and press Play. The projector may not recognise the DVD/video player until it is playing and generating a signal.

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AFTER YOUR SESSION. 1. If you have changed the settings of the projector from factory defaults it would be a kindness to the next

user to set them back to standard before you power‐down your laptop and the projector. These settings are covered in the User Guide if you are an expert.

2. When you have done, press the green power button on the remote, and confirm your intentions by pressing it a second time, as the screen prompt requests. [This sequence is to safeguard you if you should

happen to press the power button by accident in the middle of your show!]

3. The projector will shut itself down in about a minute.

4. Then shut down your laptop, and disconnect all the cables, and stow them neatly on the hooks at the termination. Please also unplug the mains lead of the trolley 6‐way extension board from the wall socket.

The Guild’s preference is to unplug all electrical equipment after use, particularly at close of the day.

5. Please ensure that you leave all the Guild’s cables on the trolley, and that you return the box with the

remotes to the office behind reception.

You're done!

NOTE ON LAPTOP MONITORS Most laptops can mirror the laptop screen to the external VGA socket or its equivalent, so that it displays the

desktop, but note that the projector image is XGA size 1024 pixels wide x 768 pixels high, and your laptop will try to drive it to show the best image to your audience. Your desktop on the laptop may be distorted, and

often the colour will be adjusted to give the correct image for the audience. The projector and your laptop will have different colour spaces or gamut. The projector can accept and recognise most computer monitor sizes and frequencies, and will convert the incoming signal to drive its own XGA image. Note however that some 17

inch laptops have very wide screens, that cannot be accommodated by the projectors. You might need to set your monitor to a more normal 4 by 3 aspect ratio.

Setting your computer image to XGA is likely to produce the best projected image quality. Graphic images, particularly photographs, work best if they are XGA size (1024 pixels wide x 768 pixels high).

Many laptops can give an extended desktop, where the projector image is as it were alongside the laptop desktop image, usually either to the left or the right. In this case the laptop will almost certainly produce the

best image on the projector and compromise the colour of the desktop to give the best result for the audience. Windows XP can only provide one colour setting to both monitors unless the machine has two

separate video cards, and it usually opts to use the colour space of the projector to give the best picture to your audience. Applications like PowerPoint can recognise the extended desktop and allow you to view a

presenter’s navigation view on the laptop screen while the audience see the current slide on the projected image. If your laptop provides extended desktop you can set the second display to XGA in the default control

panel Displays or in the control panel for your video adaptor. On Windows XP this is selected by Control Panel/Display/Set “Extend my Windows Desktop”. Once the second window is in place, reduce the screen

resolution to 1024 x 768.

You can usually cycle the laptop through the various combinations of laptop only, mirroring the laptop and

projector, extended desktop, and external display only, by pressing a function key to switch through the

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several modes. Often the function key is F7 or F8, but the correct key depends on the make and model of your

laptop. There might be a symbol on the correct key, and the details will be in your handbook. You may also have to press another “modifier” key (rather like shift) to tell the laptop to interpret the function key as a

special command rather than as a function key. Often this can be set as a toggle, depending upon which function you use most frequently. Consult your laptop manual or help system for more information.

The usual key combinations for each personal computer manufacturer are as follows:

Dell [Fn]+[F8]

Epson [Fn]+[F8] Fujitsu [Fn]+[F10]

Gateway [Fn]+[F3] Hitachi [Fn]+[F7]

HP [Fn]+[F4] IBM [Fn]+[F7]

Mitsubishi [Fn]+[F5]

NEC [Fn]+[F3] Panasonic [Fn]+[F3]

Sharp [Fn]+[F5] Sony [Fn]+[F7]

SOTEC [Fn]+[F3] Toshiba [Fn]+[F5]

Sometimes Windows XP “hangs” when you try to connect a projector. A restart usually cures the problem. The advice given above, to power‐up the projector first, and then boot the laptop avoids this problem.

MENU SETTINGS The menu pictures are of the CX70/CX76. The later CX61 may differ slightly in detail.

You may need to check the settings of the projector. These notes are written from the viewpoint of a

computer user.

Press Menu on the remote, and you'll see the menu display on the screen, probably PICTURE SETTING, which can only be adjusted when you have an input source, so we shall consider that menu in a moment, after

we have considered the other menus and booted the laptop or other source.

Navigate with the cursor keys, (left, right, and up, down) and use Enter to confirm a choice. Press Menu again to exit, which happens automatically after one minute without a key press.

Scroll down to the fifth menu item indicated by a yellow highlight in the left hand column of the menu window, and you should see the INSTALL SETTING Menu.

The normal settings that you want are:

Tilt ................................................. (blank)

V Keystone .................................... Auto

Side shot........................................ o

Auto Focus .................................... On

Image Flip ...................................... HV

(= Horizontal flip + Vertical flip: Changed because our projectors are ceiling-mounted)

Background.................................... Blue

Test Pattern ................................... Off

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Lamp Mode.................................... Standard

Lens Control .................................. On

High Altitude Mode ........................ Off

Security Lock ................................. Off

To change any setting press the right arrow or the Enter button. Then navigate up and down the menu to the item you want to change with the up/down buttons. Then press right arrow or Enter to select that item in the

menu. Up‐down among the choices and press Enter to confirm that choice.

Next check the third menu item SET SETTING. The settings that you want are:

Smart APA .................................... On

Auto Input Search .......................... Off

Input A Signal Sel. ......................... Computer

(Input B Select does not appear on this projector)

Color System ................................. Auto

Power Saving................................. Off

IR Receiver .................................... Front & Rear

Illumination .................................... On

Panel key Lock .............................. Off

With an input signal from your laptop you can adjust the picture

settings.

You want to send an XGA picture to the projector, so use your monitor control panel to set your alternate display to XGA 1024 x

768 at a middle scan rate if there is a choice.

Now check the PICTURE SETTING Menu on the projector. The normal settings are:

Picture Mode.................................. Standard

Adjust Picture:

Adjust Picture gives you another window with these setting available:

Contrast.......................... 80

Brightness ...................... 50

Gamma Mode ................ Graphics

Color Temp. .................. High

Volume........................................... 30

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If you select Contrast or Brightness it will display a small control window near the foot of the display. The

cursor keys adjust the value. The RESET button puts the Contrast back to 80 and the Brightness back to 50.

Press Menu to exit when you are done.

EQUIPMENT AND CONNECTION DIAGRAMS Connection and Equipment Diagrams follow for the four rooms that are at present equipped.

The actual equipment in each room may be different from that shown on the diagram, because we move kit

about to meet varying needs, and the kit available changes.

The actual cabling will be as shown, because this is hard to change.

ACKNOWLEDGEMENTS My thanks to all those friends whose generous help made this guide more accurate and useful. Your own feedback on this note, and on the facilities provided in the four rooms will be most welcome.

Michael Wood

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Twin leads to wall-mountedspeakers

Wilmslow GuildSmall Hall Equipment ConnectionsMichael Wood, 22 December 2008.

ProjectorSony CX61

DVDSony DVP NS300

AudioJVC

UXP55

Laptop

S-video (yellow mini DIN plugs)

Composite video(yellow phono plugs)

Dual phono(red & white)

Dual Phono AUX IN stereo sockets on backPlease replace DVD audio lead after computer use.

3.5 mmstereo jack to dual Phono leadOptionaltemporary connection

6-way switched mains board

13-amp wallsocket

VGA lead(Adaptor possibly needed at laptop)Optional temporaryconnection

Red & white dual Phono stereo lead. (Now seldom used.)

VCRPye DV105/05

(Also available: bottom shelf)

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Wilmslow GuildLecture Room 2 Equipment ConnectionsMichael Wood, 22 December 2008.

DVD-VCRSony DVP NS300

AudioJVC UXG30

Laptop




3.5 mm stereo jack socket on frontPlease replace DVD-VCR audio lead after computer use.

3.5 mmstereo jackOptionaltemporary connection


13-amp wallsocket


ProjectorSony CX61

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Wilmslow GuildLecture Room 1 Equipment ConnectionsMichael Wood, 22 December 2008.

DVD-VCRPacific DVD 900

AudioSony

CMT NEZ30

Laptop




3.5 mm stereo jack plugPlease replace DVD audio lead after temporary computer use.

3.5 mmstereo jackOptionaltemporary connection


13-amp wallsocket

VGA lead(Adaptor possibly needed at laptop)Optional temporaryconnection.

ProjectorSony CX61

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Wilmslow GuildCraft Room 1 Equipment ConnectionsMichael Wood, 22 December 2008.

DVD-VCRSony SLV D930G

Laptop




3.5 mm stereo jack socket on frontPlease replace DVD-VCR audio lead after computer use.

3.5 mmstereo jack. Optionaltemporary connection.


13-amp wallsocket


ProjectorSony CX61

AudioJVC UXG30

Documents

IGITAL ROJECTION ACILITIES USING THE DIGITAL …wilmslowguild2013copy.wdfiles.com/local--files/downloads/... · extension cable for the projector into one of the six sockets on the