Digital Projector Resolution
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 RF Coax Cable TV To HDMI DVI Video Audio Demodulator  US $148.00
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 1 In 2 Out VGA Over CAT5 Extender Splitter 1900x1200 US $136.00
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 DVI D Digital To VGA RGBHV Format Converter US $96.00
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 REFURBISHED Avermedia VS3AFPLSR Document Camera US $305.16
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 HDMI DVI D Digital To VGA Component Video Format Converter US $96.00
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 HD Component Video PC VGA RGBHV Video Scaler US $170.00
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 Professional VGA Video Extender W Stereo Audio Over CAT5 CAT6 US $99.50
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 Long Range VGA Video Audio Extender Splitter 1900x1200 Pixels US $136.00
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 Lenovo 0A36536 DisplayPort cable 8 in US $36.99
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 Promethean PRM 30A 2500 ANSI Lumens LCD Projector 1280 x 800 5001 WXGA US $644.84
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 Promethean PRM 30A 2500 ANSI Lumens LCD Projector 1280 x 800 5001 WXGA US $728.12
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 Avermedia VISNCP135 Document Camera US $448.27
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 Avermedia VIS3AFPLS AVerVision 300AF Dccument Camera US $604.55
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 1 In 2 Out VGA Balun VGA Extender Splitter 1900x1200 US $136.00
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 MITSUBISHI MW 2100 WIRELESS VIDEO ADAPTER EXTERNAL US $129.95
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 Avermedia VISIONF30 Document Camera US $526.83
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 REFURBISHED Avermedia VSV355AFR Document Camera US $349.34
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 Xrite CMUNDIS ColorMunki Display US $137.99
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 Xrite EODIS3 i1Display Pro US $180.00
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 1 In 2 Out VGA CAT5 CAT6 Extender Splitter W Audio US $136.00
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 Xrite EODIS3 i1Display Pro US $200.00
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 Pro Video To VGA RGBHV Converter Cable TV Tuner US $114.00
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 VGA Video Extender W Stereo Audio Over CAT5 CAT6 US $99.50
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 Peerless Prs Series PRS EXA Adjustable Projector Ceiling Mount 87 to 128 US $42.59
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 Avermedia VISIONW30 Document Camera US $697.98
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 SD To DVI HDMI Video Scaler With Coax Cable TV Tuner US $148.00
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 1 In 2 Out VGA Video Stereo Balun Extender Splitter US $136.00
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 Optoma BR 3034N Remote Control US $159.00
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 HDMI DVI D Digital To VGA Component Video Transcoder US $96.00
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 Digital DVI HDMI To VGA Component Video Format Transcoder US $96.00
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 DVI D To VGA RGBHV Component RGB Video Format Converter 1600x1200 1080p US $96.00
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 DVI D HDMI To VGA RGBHV Format Converter 1600x1200 1080p US $96.00
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 10 GOLD DVI D DUAL LINK DIGITAL VIDEO HD MONITOR CABLE US $14.00
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 Professional VGA Video Balun CAT5 Extender With Stereo Audio US $99.50
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 Avermedia VISIONF50 AVerVision F50 Document Camera US $614.19
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 Composite S Video Component VGA HDMI To HDMI Scaler US $235.00
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 REFURBISHED Avermedia VSSPC3SDR Document Camera US $304.90
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 REFURBISHED Avermedia VSSPB350R Document Camera US $368.10
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 Avermedia VISIONM50 AVerVision M50 Document Camera US $686.52
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 Ultra Composite RCA to VGA Converter 1600x1200 pixels US $48.50
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 Digital DVI D to VGA Video Format Converter US $96.00
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 InFocus HW VGA2OUT Video Splitter 2 Ports NEW in Box US $19.99
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 InFocus Liteshow Wireless Projector Antenna US $66.99
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 Peerless Prs Series PRS EXA Adjustable Projector Ceiling Mount 87 to 128 US $37.71
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 InFocus Liteshow Wireless Projector Antenna US $66.99
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Coordinate Measuring Machine, profile projector, digital readout, linear scale, Made in Taiwan
Expert's Guide To Buying A Digital Projector For Education Or Business
Buying a digital projector means focusing on seven key points that give a price and performance comparison across brands.
The problem is manufacturers try and muddy the market by making comparison difficult.
Before considering any projector, make a mental note of what the digital projector will do for your business or organisation, where it will be used and the budget.
This sets parameters for the reseller that lets them make sensible recommendations.
For each digital projector, cross-compare these seven key points by award points out of 10 for each category that should give one or two products that meet the specification required:
Resolution
The higher the screen resolution in pixels is reflected in a higher digital projector price. Match the projector to the place where it will be used and what will be displayed.
PowerPoint presentations in small rooms or classrooms are generally fine at a low resolution.
Brightness
These depend on the light output, measured in lumens. A projector output of less than 1000 lumens may not give a clear image. Presentations in rooms with bright lighting left on probably need a high-performing LCD projector.
Contrast
Contrast is the ratio between the lightest and darkest areas of an image. Look for a ratio of 400:1 or more to get a balanced image.
Portability
If a digital projector is static, weight doesn't matter, but if someone has to carry the equipment around together with leads and cables, a lightweight model in a tough case is better. Portable digital projectors can weigh in at less than 5lbs, but less weight can come with a heavy price tag.
Connectivity
Check out the devices that need an input on the projector and make sure the model has the right jacks and plugs plus a couple spare. Consider the computer that will input as well - is it a Mac or a Windows machine and will the digital projector's software and/or drivers run on it?
All these factors have to be considered to make sure a projector delivers maximum usability.
Lamp life
Replacing digital projector lamps is expensive. Look for a machine that has a listed lamp life of 2000 hours and any power saving options as extras like lamp management features to extend lamp life.
Warranty
Other key points that affect price are projector and lamp warranty. The longer and more comprehensive the warranty generally pushes the digital projector price up.
Don’t forget to check out the support that’s available from the reseller and the availability of spare lamps.
If the cost is much less than expected, find out if the projector is cheaper because it’s an end-of-line and whether a new model is due.
Should the price come in more than expected, the digital projector could be a new model with early takers paying over the odds so the maker can reclaim R&D costs.
Lastly, don’t make a quick decision – ask the reseller to provide a range of choices and request a demo in the room where the digital projector will be installed if possible.
About the Author
Steve Hine tests and reviews cutting edge digital signage, videoconferencing equipment and related software and hardware for Smarter Interactive, a leading UK audiovisual consultancy
how to improve the image of digital cable??
I just got a 720p/1080i dlp projector and eventhough the HDMI looks amazing,the digital cable looks like broadcast resolution at best and at 110 inches..it doesn't look all that great.Is there anyway to improve the picture quality?
I have standard digital cable,it's not HD.
):
it has the standard rca video output only.it looks alright..it's like watching a really big tv.
I am pretty knowledgeable with dlp projectors I just need something to improve the picture quality of my digital cable.HDMI looks great and there is no distortion at 100 inches with it's 1080i.I just wish my digital cable looked just as good,no I will not be converting to HD cable any time soon being that there are only a like a handful of channels any that broadcast in HD.
There is nothing you can do. You are taking a standard-def picture signal that, at best, starts to look a bit grainy on a 32" TV and stretching it to fill a HUGE 110" screen. Of course it doesn't look great. That's the primary reason the world is in the process of converting to HD: so that TV signals will have enough resolution to look watchable on the much larger TV screens we commonly have today.
Standard-def looks bad on all large-screen TVs; always has, always will.
