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General Projection Systems Projectors, screens, scalers, switchers, scan converters and other display equipment.

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  #1 (permalink)  
Old Monday, November 8th, 2004, 01:33 PM
superhua
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How far will a computer VGA signal travel?

Hello,

Just a basic question: I would like to move our computer to about 15' to 20' from the projector. How far will a computer VGA signal travel without a boost? Can I just buy a 15' to 20' VGA cable and go--or do I need to buy more equipment?

Thanks!
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Old Monday, November 8th, 2004, 02:00 PM
TL5's Avatar
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This is not my area of expertise, but my experience has been with good cable 50' is well within normal limits. However, with a cheapo extension cable I picked up from Best Buy, I can see degradation in the signal with the added 10'. Of course YMMV.

Last edited by TL5; Monday, November 8th, 2004 at 02:32 PM.
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Old Monday, November 8th, 2004, 02:19 PM
Joseph B's Avatar
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There are several posts about this so it might pay to do a search, but over 75 to 100 foot most seem to recomend an amplifier. I do 100 to 150 ft and haven't had any problems.
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Old Monday, November 8th, 2004, 02:45 PM
nathandiehl's Avatar
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i have one 150' run and have no issues.
you should be fine, but remember not to run the VGA cable directly beside an electric line or music line to ensure to interferance.
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Old Monday, November 8th, 2004, 02:47 PM
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btw, congrats on your first post, my fellow hoosier. there aren't but a handful of us here in this here site, if you know what i mean. have a good day, mate.
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Old Monday, November 8th, 2004, 02:56 PM
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Hey Superhua - welcome to the group.

The general thought is 100' or more needs an amp (but like you can see here, that is an estimate at best).

If you are just looking at 15 or 20 feet, no problem.

(Of course this doesn't add much more to the conversation than others have said, but I just wanted to drop a word of welcome in here)
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Old Monday, November 8th, 2004, 03:10 PM
jnorth
Spectator

 
OK so if we are looking to not add more to this subject than what has already been covered:

How much wood could a woodchuck chuck...?

VGA cables are one of those things you get what you pay for. But really most all but the absolute cheapest (and not necessarily what the store is actulally charging) should be able to provide a good enough signal over a 30' run. Also all computer graphic cards are not created equal but most of the 4 year old or newer ones seem to provide enough strength for that sort of run through a decent cable. I've run 120' past several points of interference without any naked eye difference with or without a DA attached, but I run the DA for insurance on the run and for the distribution aspect to a second monitor.
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Old Monday, November 8th, 2004, 03:49 PM
abeacon4u
Spectator

 
I do believe that the distance a VGA cable will travel is directly based on whether you send it coach or first class...
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Old Monday, November 8th, 2004, 07:44 PM
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Quote:
Originally Posted by abeacon4u
I do believe that the distance a VGA cable will travel is directly based on whether you send it coach or first class...

I always send my VGA signal first class its one place not to save a few bucks

Even though we are only going like 50 feet we went with a splitter/amp so we could get a local playback for the operator its a lot easier to fallow the screen then using the small preview screen on some of the worship software and also helps for those times when our view gets blocked (OK why does the tall guys always sit in the projection booth line of sight?)
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Old Monday, November 8th, 2004, 09:08 PM
superhua
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Thanks for all the helpful and welcoming replies!
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Old Wednesday, December 29th, 2004, 08:55 AM
Randy Allen
Spectator

 
Question more screens....

Has anyone used a USB to VGA adapter before?

I saw this item on Tiger for about $80 and was wondering if anyone has used it before.

http://www.tigerdirect.com/applicati...?EdpNo=1088606

[watch for the wrap around]

If anyone has used it please let me know.

Thanks

Randy
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Old Wednesday, December 29th, 2004, 11:22 AM
jliechty
Spectator

 
Quote:
Originally Posted by Randy Allen
Has anyone used a USB to VGA adapter before?

I saw this item on Tiger for about $80 and was wondering if anyone has used it before.

http://www.tigerdirect.com/applicati...?EdpNo=1088606

[watch for the wrap around]

If anyone has used it please let me know.

Thanks

Randy
My only comment here would be that the external graphics card wouldn't provide any DirectX or OpenGL acceleration, so transitions in PowerPoint at least will be choppy. For that matter, my old Radeon here at home has enough trouble keeping up with a good quantity of fades, so your pleasure with the performance of this device will probably be directly proportional to the complexity of the presentations that you want to run on it.

Other than that, Tigerdirect doesn't really have the best reputation in the business. Some have been satisfied, but I much prefer to order from Newegg if possible.
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