VGA to Video—Portable Plus Audio
Contents
1. 18 eon 18 Bee ROME CLOT PCC 19 cin eee ne ee 20 0 20 0 20 BIANO ADO NV dC O aaia enda Pd o uU MPUerE d DeE 2l R VAGO IETA a E 22 39 SUDDOSHOTIS 23 6 Troubleshooting and Software Applications tnra ire tto ihe 24 or GUE serasi E c 24 02 26 AO 28 31 1 Specifications System Requirements PC or NOTE compatible computer or Macintosh LC LC II or Quadra must have video output driver 1 K of free memory Mac pass through is not supported Output 2 S Video out NTSC Resolution all standard VGA Output 5 Composite NTSC modes including 320x200 and cae 4 oo pM 640x480 modulator con igure standard RF modulator adapters Colors from monochrome to 16 million simultaneous colors Display Speed Real time Drivers Windows 3 1 for IBM Inputs VGA or Mac analog no drivers required for Macintosh Horz frequency 31 5 KHz Compatibility Compatible with windowing boards IBM NOTE Mac conversion is limited to certain computers that can run in VGA mode see Compatibility The supplied Mac adapter forces the Mac laptop into VGA mode and requires booting when attached Outputs Output 1 RGB out VGA pass through for local monitor2. M Motion etc Macintosh LC LC II and Quadra computers Connectors Inputs 1 15 pin high density mini D 1 mini jack for stereo audio input Outputs 2 15 pin HD DBI5 female 1 4 pin mini DIN jack 3 RCA jacks 1 mini jack Power 10 W Size 1 6 H x 11 8 W x 9 5 D 4 1 x 30 x 24 1 cm Weight 2 5 Ib 1 1 kg not including power supply VGA TO VIDEO PORTABLE PLUS AUDIO 2 Introduction 2 1 Unpacking 2 2 Taking a Closer Look The VGA to Video Portable Plus Take a moment to examine the VGA Audio was packed to ensure safe to Video Portable Plus Audio unit shipment The following is an It is a compact device the size of inventory list of items included in most notebook computers You can your order Check off each item as use it as a convenient platform for you remove it from the packaging your portable computer when they any item is missing please contact are used together With a weight of your dealer immediately less than 2 pounds the unit can be easily carried in an attach case or Be sure to save the packing an overnight bag material and the box for reuse The design of the unit places most Your package should contain the of the controls on the front panel following items while all of the cable connectors are located on the back This VGA to Video Portable Plus arrangement allows unhindered Audio NTSC unit connections to the computer and video equipment and provides ea
3. Mathematica Inc of the software packages we have tested with the VGA to Video Portable Plus with Audio ColoRIX RIX SoftWorks e Publisher s Paintbrush ZeSoft CHAPTER 6 Troubleshooting and Software Applications Presentation e Animator Animator Pro AUTODESK Inc e Video Titler Entropy Engineering Charisma Micrografx Inc Freelance Graphics IBM Corporation Harvard Graphics Software Publishing Corporation QuickShow HSC Productivity word processors spreadsheets databases e dBASF release 1 Inprise Corporation Quattro Inprise Corporation e PCTools rel 5 X 6 X 7 X Central Point Software e DataEase Software Solutions Inc Lotus 1 2 3 IBM Corporation DisplayWrite IBM Corporation Word Microsoft Norton Utilities Symantec Corporation WordPerfect WordPerfect Windows 3 0 amp 3 1 We have successfully tested all of the major programs for this operating environment You must not set the resolution higher than 640 x 480 Entertainment James Gleick s Chaos The Software AUTODESK Inc Fractools Bourbaki e oom LucasArts Entertainment Company The Secret of Monkey Island LucasArts Entertainment Company e Wing Commander Origin Wing Commander II Origin Most of these games can be further enjoyed when viewed on a large screen TV and used with
4. Monitor A device to display television or computer video output Monochrome Displaying only one color commonly white green or amber NTSC National Television Standard Committee The television standard used in North America and several other countries This standard displays 525 line frames 60 times per second Overlay The combination of two video images as in the case of computer generated text over a video picture Overscan The enlarging of a video image in order to fill the entire screen and eliminate any visible borders around the image Pixel PICture ELement The smallest element with controllable color and brightness on a monitor screen The greater the number of pixels the higher the screen resolution Resolution The ability of an imaging system to differentiate between closely spaced objects RGB Red Green Blue the three signals which correspond directly to the color primaries This video signal consists of four separate elements red green blue and sync Each element goes to an individual input resulting in a cleaner image than that possible with composite signals since there is less interference and distortion VGA TO VIDEO PORTABLE PLUS AUDIO Saturation The degree to which a color approaches the pure color of the spectral line Dull or pale colors have low saturation vivid colors high saturation Standards Converter A device that will convert
5. offers a resolution of 640 x 350 pixels a palette of 64 colors and the ability to display as many as 16 colors at one time Field Half of a video image frame There are two fields ina frame one with the odd lines the other with the even ones For NTSC a field consists of 262 5 lines alter nating every of a second The PAL standard consists of 312 5 lines alternating every 2 of a second See Interlace Frame A full video image made up of two fields Fringing The unwanted presence of colored edges on the border between two high contrast areas APPENDIX A Video Glossary Graphics Mode A video mode used generally for non text functions It is measured by the number of pixels in the X horizontal and Y vertical dimensions and the number of colors displayed In the graphics mode each pixel is addressable Microsoft Windows operates in these modes Genlock The process of synchronizing a locally generated video signal to a master reference This ensures that all signals will share the same timing information Interlacing The showing of two fields alternately each field filling in the blank lines of the other thus resulting in an apparently solid image In the NTSC standard 60 fields are interlaced to show 30 video frames per second while PAL has 50 fields for 25 frames per second Luma or Luminance Y The brightness of an image as contrasted with its chrominance
6. tend to be very expensive The next best choice is S Video Almost all good video displays have an S Video input now and good S Video VCRs can be purchased inexpensively All current VCRs accept composite video VGA TO VIDEO PORTABLE PLUS AUDIO RF as discussed before should not 2 5 Included Software be selected as a first choice unless the device has only an RF input Included in the package are two However if you need to distribute disks one a 5 5 and the other a video over a large area at a moderate 5 25 They both contain the same cost and want to include audio video driver LTTV COM as well as from an appropriate source UNLTIV COM and DEMO COM consider using the optional RF You must run this TSR program Modulator Check an electronics before you use the VGA to Video store such as Radio Shack for RF Portable Plus Audio unit It takes up distribution equipment less than 1000 bytes on disk and even less once in memory Run this program from a command line in your AUTOEXEC BAT program Also provided is a demo program that will help you get familiar with the functions of the VGA to Video Portable Plus Audio To run it just type DEMO once the unit is connected CHAPTER 3 Installation 3 Installation 3 1 Site Selection Setting up the unit is very simple If you are using a portable computer you may find it convenient to place it on top of the unit With a desktop model locate the converter eith
7. the signal provided is much cleaner than that of the composite output you can actually use a suitably equipped television to display 80 column text This output can be used with S VHS ED Beta and Hi 8 VCRs as well as many modern televisions and video projectors 5 4 3 RGB The RGB video output available on a 15 pin HD D identical to the VGA connectors keeps all of the elements of the video signal isolated the three colors Red Green Blue and the two syncs Vertical and Horizontal Composite This ensures the highest quality image but there are a limited number of devices that can use this signal Among the ones that can are professional video monitors high end video projectors and RGB VCRs The structure of this output is similar to that of the VGA signal but the timing is different 5 4 4 RF There is one more optional output available A special connector is provided for connection to an RF Modulator available separately The modulator s output which is essentially the type of signal that is broadcast by television stations can be used to connect to a television that does not have an external video input This also is a good way to provide inexpensive video distribution throughout a location similar to cable TV For added convenience an audio input is provided so that you can also distribute sound such as from a Sound Blaster audio card with your video The image displayed through this type o
8. your video equipment has an S Video input Super VHS monitors or VCRs you are best off using this connection This will require the use of the supplied S Video to S Video cable Connect the end with the cylindrical bead to the S VIDEO OUT of the VGA to Video Portable Plus with Audio and the other end to the S VIDEO IN of your video device The S Video signal carries the brightness Luma and the color Chroma information separately The signal provided is much cleaner than that of the composite output so you can actually display 80 column text This output can be used with S VHS ED Beta and 8 VCR s as well as many modern televisions and video projectors 3 3 3 RGB Professional video equipment accepts RGB input RGB devices need to be connected to the RGB OUT of the VGA to Video Portable Plus with Audio unit The connectors vary depending on the RGB device so refer to your equipment s operating manual This type of equipment generally requires BNC connectors so you will have to obtain an RGB to BNC adapter cable Other video products such as the Sharp SharpVision video projectors require a 15 pin D connector The RGB video output keeps all of the elements of the video signal isolated the three colors Red Green Blue and the two syncs Vertical and Horizontal Com posite This ensures the highest quality image There is a limited number of devices that can use this signal T
9. OMPOUT VGAOUT NO YES e 0 696 6 ZN VCR o 6 mum OPTIONAL VGA MONITOR OPTIONAL MONITOR TO YES TELEVISION MAY BE COMPOSITE S VIDEO OR RGB Fig 3 2 Typical Hookup of the VGA to Video Portable Plus Audio VGA TO VIDEO PORTABLE PLUS AUDIO 3 4 Installing the Software 3 4 1 IBM AND COMPATIBLE COMPUTERS The unit software is provided on two disks one a 3 5 and the othera 5 25 They both contain the same programs and you can use either one depending on the type of diskette drive you have The disks contain the Video Driver LTTV COM This Terminate and Stay Resident TSR program must be run before you use the VGA to Video unit It occupies less than 1K of memory The disk contains a README file that has information about the hardware and software that was not available at the print time of this manual We strongly recommend that you read it now The the unit software needs to be copied into a pathed directory on your hard disk If your DOS directory is pathed insert the the unit program diskette into drive A of your computer and type A INSTALL at the C prompt as shown here A INSTALL C DOS and press the ENTER key 3 4 2 MACINTOSH LC LC II AND QUADRA COMPUTERS No additional software is required for Macintosh computers You will use the Control Panel function on your Macintosh to select a monochrome gray scale or 256 color monitor See your Macin
10. The unit has seven controls five on the front of the unit and two on the back of the unit 4 1 1 ANTI JITTER SWITCH OFF ON The ANTI JITTER switch enables and disables the anti jitter filter For most applications you will want to leave it engaged Try turning it on and off you will see how effective the filter can be 4 1 2 CHROMA SWITCH A B The CHROMA switch allows you to compensate for different computer video sources You will most likely want to keep it in the factory set B position However some of the VGA cards available on the market do not meet the IBM specifications for VGA with these you may find that the VGA to Video unit s output has no color or that the color fades in and out If this is a problem use the A setting of the CHROMA switch 4 1 3 VERTICAL SWITCH The VERTICAL switch is a spring loaded center off toggle switch Simply press the switch down to move the image down or press up to move the image up 4 1 4 HORIZONTAL OVERSCAN SWITCH OFF ON The HORIZONTAL OVERSCAN switch controls the horizontal size of the image When the switch is in the ON position Overscan the image will fill up the entire video screen some of the image may extend beyond the sides of the screen depending upon the video monitor When in the OFF position the image will be smaller and thus completely visible on the monitor 4 1 5 HORIZONTAL POSITION CONTROL The HORIZONTAL Position control allows left to rig
11. VGA monitor set the switch to the NO Position NOTE The VGA to Video Portable Plus does not support Mac monitor pass through VGA TO VIDEO PORTABLE PLUS AUDIO DB 15 3 ROW DB 15 2 ROW VGA Connector Red Video 1 Red Ground 6 Blue Video 3 Blue Ground 8 Green Video 2 Green Ground 7 Hsync 13 Vsync 14 Sync Ground 10 MAC LC LC Il or Quadra Connect these two pins for VGA ID VGA to Video Portable Plus Audio AC330A Fig 3 1 Pinout for the Macintosh Cable 3 3 Connecting to the Video Equipment 3 3 1 COMPOSITE Next you must decide the type of connection you need for your video device Almost all video devices will accept a composite signal Using the supplied to RCA cable connect the end with the cylindrical bead to the COMP OUT on the VGA to Video Portable Plus with Audio unit and the other end to the appropriate input of your video device this will probably be marked VIDEO IN but refer to the manual if necessary Professional units often have a BNC connector for the composite input instead of the more common RCA connector You will need to buy the correct adapter for this connector A composite signal combines the level and timing information into one output so they can interfere with each other The quality level is only good and many video devices will have trouble displaying or recording 80 column text 2 CHAPTER 3 Installation 3 3 2 S VIDEO If
12. a sound card connected to a good stereo system Appendix A Video Glossary Analog The representation of a signal in a continuous manner between full on and full off Contrast with Digital Bloom The bleeding of one color over another on a video screen This is often the result of an area of high color intensity being adjacent to a less saturated area Border The usually dark area around the visible image on a screen A VGA monitor will normally show the border unless the image has been adjusted to overscan Chroma or Chrominance C The information that defines the color hue and saturation of an image as distinct from its brightness or luminance Color Crawl The barber pole pattern that can appear on the edges of colored areas on a screen Color Graphics Adapter CGA The original PC color display standard which utilized digital signals and offered a resolution of 320 x 200 pixels with a palette of 16 colors Composite A video signal containing the intensity color and timing information necessary for a video image Digital An electronic signal with only two steps full on 1 or full off 0 See Analog Digitize To convert an analog signal to a digital signal Encoder A circuit that combines the separate video signals into one composite signal Enhanced Graphics Adapter EGA The second generation PC color display standard with digital color signals This
13. ck for RF distribution equipment The quality of the image displayed through this type of connection is dependent on of the television s tuner and the cables used At best it will be roughly on par with that of a composite signal 3 3 5 VGA MONITOR If you want to use a VGA monitor attach it to the connector marked VGA OUT on the rear panel The MONITOR switch located between the VGA IN and VGA OUT connectors should be set to the YES position If you are not using a VGA monitor set the switch to the NO position NOTE The VGA to Video Portable Plus does not support Mac monitor pass through 3 3 6 POWER Before proceeding make sure that your power supply is the correct one for the country you are in 110V 60Hz in North America 2207 50 7 in Europe and that the power switch on the VGA to Video unit is The small plug at the end of the power supply cable must be securely plugged into the POWER IN jack on the rear panel To avoid shorting the VGA to Video unit or creating electromagnetic interference the AC Adapter output plug must not come in contact with any other part of the the unit unit Now plug the AC Adapter power cord into the AC outlet When you turn the POWER 1 switch on the front panel LED 16 will illuminate to indicate that the unit is powered CHAPTER 3 Installation LAPTOP POWER COMPUTER SUPPLY POWER RF ADAPTER AUDIO S VIDEO MONITOR ON IN IN OUT RGB OUT C
14. e BLACK BOX BELEUEBBEBEOETETE NOVEMBER 1993 AC330A AC330A P VGA to Video Portable Plus Audio poWER NTAL HORIZONTAL 8 yerTICAL OVERSCAN CHROMA ANTHIITTER ALT orr 252 o Video pius Audio portable CUSTOMER Order toll free in the U S 24 hours 7 A M Monday to midnight Friday 877 877 BBOX SUPPORT FREE technical support 24 hours a day 7 days a week Call 724 746 5500 or fax 724 746 0746 Mail order Black Box Corporation 1000 Park Drive Lawrence PA 15055 1018 INFORMATION Web site www blackbox com E mail info blackbox com FCC AND IC STATEMENTS FEDERAL COMMUNICATIONS COMMISSION AND INDUSTRY CANADA RADIO FREQUENCY INTERFERENCE STATEMENT This equipment generates uses and can radiate radio frequency energy and if not installed and used properly that is in strict accordance with the manufacturer s instructions may cause interference to radio communication It has been tested and found to comply with the limits for a Class A computing device in accordance with the specifications in Subpart J of Part 15 of FCC rules which are designed to provide reasonable protection against such interference when the equipment is operated in a commercial environment Operation of this equipment in a residential area is likely to cause interference in which case the user at his own expense will be required to take whatever measures may be necessary to correct th
15. e interference Changes or modifications not expressly approved by the party responsible for compliance could void the user s authority to operate the equipment This digital apparatus does not exceed the Class A limits for Radio noise emission from digital apparatus set out in the Radio Interference Regulation of Industry Canada Le pr sent appareil num rique pas de bruits radio lectriques d passant les limites applicables aux appareils num riques de la classe A prescrites dans le R glement sur le brouillage radio lectrique dict bar Industrie Canada VGA TO VIDEO PORTABLE PLUS AUDIO TRADEMARKS Macintosh and are registered trademarks of Apple Computer Inc Quadra is a trademark of Apple Computer Inc Radio Shack is a registered trademark of Tandy Corporation IBM and DisplayWrite are registered trademarks of IBM Corporation is a registered trademark of General Electric Co Windows is a trademark of Microsoft Corporation Microsoft is a registered trademark of Microsoft Corporation WordPerfect is a registered trademark of WordPerfect Corporation Lotus 1 2 3 and Freelance Graphics are registered trademarks of IBM Corporation Harvard Graphics is a registered trademark of Software Publishing Corporation AutoCAD and 3D Studio are registered trademarks of AUTODESK Inc DeluxPaint is a registered trademark of Electronic Arts is a registered trad
16. e to be manipulated with a minimum of distortion and adds features such as Underscan and Overscan to ensure that the image will completely fill a television screen It also allows Horizontal and Vertical positioning 5 2 Controls The controls of the VGA to Video unit are simple to use On the front of the box is a slide switch to enable or disable the Anti Jitter filter Next is the two position Chroma switch which allows you to adjust the color output for different types of VGA inputs Vertical positioning is controlled with a toggle switch allowing you to move the television image up or down The Horizontal Overscan switch controls the horizontal size of the output allowing you to compress or expand the image on the television as is needed Horizontal positioning is controlled by the Horizontal knob Finally on the rear panel is a signal termination switch Monitor Yes No that will ensure the proper load to the VGA source whether a monitor is present or not J4 CHAPTER 5 Operation A small Terminate and Stay Resident TSR program is provided to ensure that the computer s output will have the appropriate timing for the unit 5 3 A Word About Video Non interlaced In the world of video display there are two forms of output The VGA output of a computer is in non interlaced format A computer video image consists of scan lines drawn sequentially across the face of the computer disp
17. emark of Inprise Corporation Animator Pro is a trademark of AUTODESK Inc James Gleick s Chaos The Sofware is a registered trademark of AUTODESK Inc Charisma is a registered trademark of Applied Research Laboratories Inc DataEase is a registered trademark of Software Solutions Inc TRADEMARKS Loom and The Secret of Monkey Island are registered trademarks of LucasArts Entertainment Company Norton Utilities is a registered trademark of Symantec Corporation Publisher s Paintbrush is a registered trademark of 2 Soft Corporation Quattro is a registered trademark of Inprise Corporation Sharp and SharpVision are registered trademarks of Sharp Corporation Sound Blaster is a trademark of Creative Labs Inc Tempra is a trademark of Mathematica Inc Video Titler is a tradmeark of Steve Bress Entropy Engineering Wing Commander is a registered trademark of Origin Systems Inc All applied for and registered trademarks are the property of their respective owners VGA TO VIDEO PORTABLE PLUS AUDIO Contents Chapter Page EE IUe D ET 5 A A 6 P iH TT 6 2 2 Taking a Closer LOOK 6 23 Required Computer HardWarg espe Tet 9 Ae GODAU 9 10 De 8 11 1 32 Gonncctine tothe COO T 11 3 3 Connecting to the Video 0 12 DL ETS Ga the EE 16 16 de CM OMS
18. er on top of the computer or adjacent to 1t NOTE During the installation of your VGA to Video Portable Plus Audio we recommend that you have your computer and video equipment manuals available for easy reference 3 2 Connecting to the Computer Your PC or compatible computer or Macintosh LC LC II or Quadra computer must have a VGA or VGA compatible video output This will typically be a 15 pin High Density female connector for PC or compatibles or a DB15 female connector for Macintosh computers The VGA to Video Portable Plus Audio has been thoroughly tested with all of the major VGA chipsets and peripheral cards with no compatibility problems found In case of trouble please refer to the owner s manual of your equipment For IBM computers and compatibles using the 15 VGA to VGA cable connect the output of the VGA port on your computer to the connection marked VGA IN 10 on the rear of the unit If you need a longer VGA cable one is available from your dealer For Macintosh computers use a cable with the pinout shown in Fig 3 1 to connect the output of the VGA port on your Macintosh LC LC II or Quadra computer to the connection marked VGA IN on the VGA to Video unit If you want to use a VGA monitor attach it to the connector marked VGA OUT on the rear panel The MONITOR switch located between the VGA IN and VGA OUT connectors should be set to the YES position If you are not using a
19. er your notebook or laptop computer it can be used with any unit equipped with a VGA compatible output Now your computer graphics and text can be easily displayed on inexpensive large screen televisions with impressive flicker free images The unit can also be connected to any VCR to generate professional quality computer generated video tapes With the VGA to Video Portable Plus Audio your computer becomes a multimedia machine The innovative design of this device virtually eliminates most problems traditionally encountered with the conversion of computer output to video The Anti Jitter filter is so effective that even the thin borders and small text of Microsoft Windows can be displayed on a TV screen with no flicker or color crawl Now your computer graphics and text can be easily displayed on large screen televisions with impressive flicker free images A wealth of other controls gives the VGA to Video unit all the performance and features of much more expensive units Its high quality output is suitable for broadcast and professional applications but it will work well with even most inexpensive consumer products The VGA to Video unit will accept as input any standard VGA or Super VGA mode up to 640 x 480 pixels with a color depth of 24 bits per pixel up to 16 million colors It digitizes this VGA signal for output to a video unit This digitization known as Digital Signal Processing or DSP allows the imag
20. f connection will be at best roughly on par with that of the composite signal the quality of the image depends upon the quality of the television s tuner and the quality of the cables you use CHAPTER 5 Operation 5 4 5 VGA If you also need to display the VGA signal on a VGA monitor there is a loop through VGA connector provided on the back panel The signal here is unmodified it comes directly from the VGA source Ifa computer monitor is not required or available the monitor switch will provide the proper termination for the VGA source NOTE The VGA to Video Portable Plus does not support Mac monitor pass through 5 5 Suggestions The bottom line is that the picture on the will not look quite as clear as on a VGA monitor This is normal and is because of the inherent limitations of the television NTSC standard All television shows have the same limitations and yet you can still see stunning graphics You too can generate video of the same quality One of the main points to remember is that unlike viewing a computer monitor a viewer does not watch a TV from a distance of 12 from the screen Broadcasters use large letters when they want ou to read text from the screen generally no more than 40 characters on a line Stay away from fine details that will be lost in the encoding process Areas of extreme contrast will show color crawl as well as other problems Avoid thin horizonta
21. hese are professional video monitors high end video projectors and RGB VCR s 3 3 RF If your television does not have an external video input you will need to obtain an RF Modulator and an RF to RF cable The RF Modulator essentially provides the type of signal broadcast by a television station Connect the side of the modulator with the three plugs to the RF ADAPTER connector on the unit taking care to ensure that the assembly is fully plugged in On the other end of the RF modulator is an F type connector marked TO TV Plug one end of the RF cable into this connector and the other end into the video device s ANTENNA IN Be certain to set the unit s tuner to the appropriate channel 3 or 4 for NTSC for PAL see the manual supplied with the adapter To provide sound simultaneously you will need to connect an audio source Soundblaster Walkman microphone mixer etc to the AUDIO IN connector on the VGA to Video Portable Plus with Audio unit The connector accepts a standard stereo mini plug the appropriate cable can be purchased from any stereo or electronics store ooo IH VGA TO VIDEO PORTABLE PLUS AUDIO RF should not be selected as a first choice However if you need to distribute video over a large area ata moderate cost and want to include audio from an appropriate source then it is worth considering using the optional RF Modulator Check an electronics store such as Radio Sha
22. ht movement of the video output You will need to readjust this if you switch the horizontal overscan switch 4 1 6 MONITOR SWITCH YEs NO This switch located on the rear of the unit determines whether an external VGA monitor is connected to the VGA to Video unit If you attach a VGA monitor to the unit the MONITOR switch located between the VGA IN and VGA OUT connectors on the rear of the unit should be set to YES If you are not using a VGA monitor set the switch to NO 4 1 5 POWER SWITCH Located on the rear panel next to the power input jack the POWER switch turns the unit on and off CHAPTER 4 Controls and Connections 4 2 Connector Specifications Table 4 1 Connector Specifications 15 pin high density mini D for IBM DB15 connector cable for Mac Walkman type mini jack for stereo audio input used with optional RF Modulator Outputs VGA feedthrough 15 pin HD DB15F x1 RGB 15 pin HD DB15F x1 S Video 4 pin mini DIN jack x1 Composite Video RCA jack x1 RF Modulator RCA x2 1 mini jack x1 configured for standard RF Modulator adapters Unit is available with either NTSC or PAL outputs Optional Accessory VGA TO VIDEO PORTABLE PLUS AUDIO 5 Operation 5 1 Overview The VGA to Video Portable Plus Audio allows you to connect your computer to the world of TV and video tape Although the unit is designed to be highly portable and can be carried with eith
23. k Set MONITOR switch to YES Output scrolls up Run LTTV COM Output appears scrambled Run LTTV COM Check to see if video monitor is terminated properly refer to its manual Image does not completely Turn HORIZONTAL OVERSCAN switch fill monitor ON Image on monitor is cut off Turn HORIZONTAL OVERSCAN switch too large OFF Image is not centered on screen Adjust HORIZONTAL and VERTICAL positioning switches VGA TO VIDEO PORTABLE PLUS AUDIO Table 6 1 Troubleshooting Chart continued D Image is all one color Check to make sure that the VGA cable is properly seated in the VGA IN connector Text or image breaks up on VGA mode is not supported the monitor screen 800x600 1024x768 or other Make sure that VGA cable is good Monitor may not be appropriate for this use try a better monitor 6 2 Software Applications CAD Paint The VGA to Video Portable Plus e AutoCAD release 10 amp 11 with Audio will enable you to view AUTODESK Inc many software packages on your television or record them on your e 3D Studio AUTODESK Inc VCR You are limited to a maximum l l VGA resolution of 640 dots across by Design CAD 3 D American 480 lines down and up to 16 million Small Business Compt colors This limitation is because of the restrictions of the current Deluxe Paint II Enhanced broadcast video standards Electronic Arts e Tempra Tempra PRO Following is a brief list of some
24. l or vertical lines since they tend to jitter or produce strange color effects Finally pay careful attention to what you see on television and professional video presentations and try to apply what you learn to your own presentations VGA TO VIDEO PORTABLE PLUS AUDIO 6 Troubleshooting and Software Applications Table 6 1 Troubleshooting Chart Horizontal lines jitter Turn on anti jitter circuit ANTI JITTER filter makes Normal image slightly blurry No color on composite S Video Switch to Chroma A or RF outputs Color noise on composite Switch to Chroma A S Video or RF outputs No video outputs Check power is power LED on and supply plugged in Still no output Check that signal cables are connected and good Check that cables are connected to correct input on video device TV colors don t match VGA Adjust color and tint control on TV monitor colors Output colors washed out Make sure MONITOR switch is set correctly NO for no VGA monitor YES for VGA monitor present CHAPTER 6 Troubleshooting and Software Applications Table 6 1 Troubleshooting Chart continued Output still washed out Adjust Brightness and Contrast controls on TV Check to see if video monitor is terminated properly refer to its manual Output too dark Make sure MONITOR switch is set correctly Output still too dark Adjust Brightness and Contrast controls on TV VGA monitor is too dar
25. lay Each line contains information on the graphics or text in its area of the display When all these lines are drawn very rapidly across the screen the human eye sees a solid non moving image Thin lines do not move and colors do not shimmer Interlaced Unfortunately the realm of television is in the other format interlaced A television image also consists of scan lines but these are not drawn sequentially down the screen Instead they are drawn alternately with the odd line drawn first 1 3 5 etc then the even 2 4 6 Again this is done so quickly that the eye perceives it as a solid image With a computer display drawing every line sequentially the elements of small or thin objects text lines etc are adjacent to each other This ensures that they will appear to be steady and flicker free However with an interlaced system alternate parts of these characters or graphics will be drawn then the missing parts filled in While this works adequately on large objects it does not work well for fine detail Thin lines will flash as they alternately appear and disappear on the screen and the boundaries between high contrast areas will tend to show color crawl a barber pole pattern of random colors Just watch a news broadcast closely to see these problems The VGA to Video Portable Plus Audio incorporates a unique digital filter to solve this problem This circuit reduces the flicker to im
26. no compatibility problems found In case of trouble refer to the owner s manual of your VGA based equipment before calling Technical Support NOTE Many notebook and laptop computers require a special program or keypress to switch between the internal and external display The VGA output must be enabled for the VGA to Video Portable Plus Audio to work properly Please refer to your computer s operating instructions 2 4 Compatible Video Devices Video recorders televisions or monitors and video projectors come in a variety of quality performance and price levels The VGA to Video Portable Plus Audio will connect to virtually all of these devices through one of its many outputs Most of the better television sets have monitor functions they have direct video inputs as well as an RF broadcast input While all video monitors will take a composite video input many have provision for accepting S Video High end professional units will often have an RGB input Refer to the equipment s operating manual to identify the type of video input s on the unit A video recorder takes the output of the VGA to Video Portable Plus Audio and stores it on a videotape cassette This process often introduces errors so it is always a good idea to record the highest quality signal that the device will accept As discussed previously the best output is the RGB Unfortunately very few video devices accept RGB input and they
27. or display standard developed by IBM offering a standard resolution of 640 x 480 pixels a palette of 256 colors with the ability to display as many as 16 colors at one time Unlike previous display outputs which were digital the color information signals are analog Video Mode The resolution of the screen i e the number of pixels across by lines down for graphics modes or the number of text characters across by lines down text modes A ANTI JITTER filter 20 24 AUTOEXEC BAT 10 15 11 Brightness 12 C CAD Paint 6 Chroma 12 22 Color 12 Digital Signal Processing or DSP 20 DOS 15 ED Beta 12 22 Entertainment 27 Harvard Graphics 22 Hi 8 VCR 12 22 High Density female D connector 11 Horizontal Overscan 20 25 L Lotus 1 2 3 22 LTTV 15 LTTV COM 14 25 Luma 12 22 N NTSC 6 19 22 23 P Presentation 27 Productivity word processors spreadsheets databases 27 RCA 11 RCA jack 22 RF 9 12 13 19 RF Modulator 10 22 23 RGB 9 12 22 S Video 9 12 22 24 Super Video S Video 22 T Terminate and Stay Resident TSR 10 14 21 V VCR 20 W Windows 22 Windows 3 0 amp 3 1 27 Windows 3 1 15 WordPerfect 22 BLACK BOX Copyright 1993 Black Box Corporation All rights reserved 1000 Park Drive Lawrence PA 15055 1018 724 746 5500 Fax 724 746 0746
28. perceptible levels with a minor loss of sharpness The end result is that you can comfortably work with WordPerfect Windows Lotus 1 2 3 Harvard Graphics or virtually any other program on a television screen The output is also compatible with any type of VCR VGA TO VIDEO PORTABLE PLUS AUDIO 5 4 Video Signals The VGA to Video Portable Plus Audio converts the incoming computer video to three different types of NTSC signals These signals all of which are available simulta neously are RGB Red Green Blue S Video and composite All the signals meet the published specifications for the appropriate standards NTSC RS 170A There is also a second composite video output for use with an external RF modulator 5 4 1 COMPOSITE The composite output available on the RCA jack can be used with virtually any device that has a video input Since all of the level and timing information is combined into one signal hence composite and can therefore interfere with each other the quality level is only good You should be aware that many video devices will have trouble displaying or recording 80 column text 5 4 2 S VIDEO When you need a higher quality image we suggest that you use the Super Video S Video output available from the 4 pin mini DIN jack The S Video signal carries the brightness Luma or Y this is actually black and white video and the color Chroma or C information separately As
29. sy e AC power adapter access to all controls e 15 38 1 cm video cable 6 1 8 m composite cable e 3 5 program disk 5 25 program disk e S Video cable e This user s manual CHAPTER 2 Introduction IZONTAL HORIZONTAL HOR VERTICAL as ANTIUITTER oFF r to Vide potable plus Fig 2 1 VGA to Video Portable Plus Audio in Action VGA TO VIDEO PORTABLE PLUS AUDIO HORIZONTAL ANTI JITTER CHROMA VERTICAL OVERSCAN HORIZONTAL POWER VGA TO VIDEO Ci 3 9 PORTABLE PLUS AUDIO Fig 2 2 Front View of VGA to Video Portable Plus Audio POWER RF ADAPTER AUDIO S VIDEO MONITOR ON IN IN OUT RGB OUT COMPOUT VGA OUT NO YES VGA IN e 999 9 we E ga Fig 2 3 Rear View of VGA to Video Portable Plus Audio CHAPTER 2 Introduction 2 3 Required Computer Hardware Your PC or compatible computer or Macintosh LC LC II or Quadra computer must have a VGA or VGA compatible output This will typically be available from a 15 pin high density female D connector for PC and compatible computers or a 12215 female connector for Macintosh LC LC II or Quadra The connector must supply analog RGB signals as well as a 31 5 KHz horizontal sync and a 60 Hz vertical sync standard VGA specifications The VGA to Video Portable Plus Audio has been thoroughly tested with all of the major VGA chipsets and peripheral cards with
30. tosh manual for more information 3 5 Using the Software IBM only Now that the programs are copied into a pathed directory just type LTTV at any prompt You must do this before you use the VGA to Video unit If you run LTTV COM again it will detect the previously loaded version in memory and not reinstall itself If you want to uninstall LTTV COM for any reason just type UNLTTV and the program will be removed from memory NOTE If you like you can add LTTV COM to your AUTOEXEC BAT file so that it can be automatically loaded every time you boot your computer see a DOS manual to find out how to alter the AUTOEXEC BAT file 1 o CHAPTER 3 Installation 3 5 1 WINDOWS 3 1 CONSIDERATIONS Some televisions will not display the whole screen image when you use Windows 3 1 You can easily correct this by adjusting the Vertical control on the TV or resizing the Windows desktop The VGA to Video unit also provides a modified VGA driver if the problem persists The first step is to rename your current Windows 3 1 VGA driver for safekeeping At the C prompt type CD C WINDOWS SYSTEM and press the ENTER key RENAME VGA DRV VGA480 DRV and press the ENTER key Insert the Video software diskette into drive A and copy the VGA driver onto your hard disk COPY A WIN31 VGA440 DRV VGA DRV and press the ENTER key VGA TO VIDEO PORTABLE PLUS AUDIO A Controls and Connections 4 1 Controls
31. video of one format VGA for example to another format like NTSC television Strobe The rapid flashing of lines due to the presence of part of an image in one field but not another This is most noticeable with lines that are only one pixel high on a VGA screen and are converted to NTSC or PAL This problem appears in interlaced displays Synchronization or Sync The part of a video signal that provides the precise timing information for display Super VGA An enhancement of VGA that includes resolutions of 640 by 480 with 256 colors 800 by 600 with 256 colors and 1024 by 768 with 16 colors S Video or S VHS A video standard where the luminance and chrominance of the video signal are isolated from each other resulting in a cleaner image with significantly higher resolution Terminations The NTSC video standard dictates that all signals work into a 75 ohm load generally a resistor If the signal is not terminated properly into this load the signal levels will be incorrect and may result in washed out colors or distorted images Text Mode A display mode where the addressable elements on the screen are text characters It is measured by the number of characters across the screen and the number of character lines down Underscan The shrinking of a video image so that the entire image is visible on the display screen See Overscan VGA Video Graphics Array A computer monit
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