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Main => Main Forum => Topic started by: squirrellydw on May 21, 2007, 06:13:10 pm

Title: Touch Screen performance with long VGA and serial cable??
Post by: squirrellydw on May 21, 2007, 06:13:10 pm
Does anyone know if the performance of a touch screen will be affected if I use a long VGA and serial cable?  My guess is it will be about 20 feet at the most.  The reason I ask is I would like to mount my touch screen on the wall and have the case as small as possible and I could but the computer with my stereo.  What do you guys think?

Thanks

sorry if this is in the wrong forum
Title: Re: Touch Screen performance with long VGA and serial cable??
Post by: BobA on May 21, 2007, 06:31:18 pm
RS232 is dual voltage and can be run a max of about 150 feet so it will be no problem.   The VGA is very much dependant on signal quality for analog so use the best cable you can for extended runs.  Projector and other units are quite often run on 10 to 20 meter cables for video presenations in auditoriums.  So 30 to 60 feet is commonly done.  20 feet should be no problem.   
Title: Re: Touch Screen performance with long VGA and serial cable??
Post by: squirrellydw on May 21, 2007, 06:37:23 pm
thanks but what is RS232?
Title: Re: Touch Screen performance with long VGA and serial cable??
Post by: miles2912 on May 21, 2007, 08:48:13 pm
RS232 is a serial cable.  Hardly used any more.  I have a 100 foot VGA cable run at an office to a plasma tv.  Works fine.

Title: Re: Touch Screen performance with long VGA and serial cable??
Post by: squirrellydw on May 21, 2007, 09:39:11 pm
cool thanks, I just measured and will need about 35 to 40 feet total.  Any difference in using a VGA vs SVGA cable?  Newegg has both
Title: Re: Touch Screen performance with long VGA and serial cable??
Post by: BobA on May 22, 2007, 04:37:34 pm
The ones on Newegg that are called SVGA seem to be of a bit better construction.   For the best look for a cable that uses small coax for the analog signals. The tiny coax transmits signals cleaner then twisted pairs.  Your 30 ft should not require anything special.
Title: Re: Touch Screen performance with long VGA and serial cable??
Post by: ahofle on May 22, 2007, 04:53:51 pm
Monoprice has really good cables for cheap:
http://www.monoprice.com/
Title: Re: Touch Screen performance with long VGA and serial cable??
Post by: squirrellydw on October 10, 2007, 09:31:12 pm
Hey  BobA, since you seem to know your cables, if you get a chance what would you recommend from Newegg or cablestogo?  I need a SVGA and a serial cable about 35 to 40 feet.  If you don't have time, I will pick one myself.
Title: Re: Touch Screen performance with long VGA and serial cable??
Post by: squirrellydw on October 10, 2007, 09:58:31 pm
Newegg 19.99 (http://www.newegg.com/Product/Product.aspx?Item=N82E16812105808)
Cablestogo 64.99 (http://www.cablestogo.com/product.asp?cat%5Fid=3414&sku=28015)

Any thoughts?  The 19.99 ones seem ok, the Arrowmicro website says they use mini coax
Title: Re: Touch Screen performance with long VGA and serial cable??
Post by: ahofle on October 11, 2007, 11:31:45 am
monoprice.com:

35 ft VGA -- $9.95 (http://www.monoprice.com/products/product.asp?c_id=102&cp_id=10201&cs_id=1020101&p_id=3590&seq=1&format=2)

50 ft VGA - $13.54 (http://www.monoprice.com/products/product.asp?c_id=102&cp_id=10201&cs_id=1020101&p_id=3572&seq=1&format=2)

Title: Re: Touch Screen performance with long VGA and serial cable??
Post by: Neilyboy on October 11, 2007, 11:43:54 am
i second monoprice.com ive bought over 300 bucks worth of component video cable from them to run all over my house and I can tell you their quality is top!!

neil
Title: Re: Touch Screen performance with long VGA and serial cable??
Post by: Wienerdog on October 11, 2007, 12:44:38 pm
Does anyone find it odd that MonoPrice.com has different pricing depending on the number of units you buy? 
Title: Re: Touch Screen performance with long VGA and serial cable??
Post by: BobA on October 11, 2007, 12:48:37 pm
I'd go with the Newegg or Monoprice.   The Newegg specifically mentions using mini coax.  The Monoprice does not mention if it uses coax but it should not be a problem at 35 feet.
Title: Re: Touch Screen performance with long VGA and serial cable??
Post by: heffe2001 on October 11, 2007, 03:21:32 pm
Does anyone find it odd that MonoPrice.com has different pricing depending on the number of units you buy? 

Quantity Discount.  Even Newegg does it :).
Title: Re: Touch Screen performance with long VGA and serial cable??
Post by: Green Giant on October 11, 2007, 04:15:05 pm
I'd go with the Newegg or Monoprice.   The Newegg specifically mentions using mini coax.  The Monoprice does not mention if it uses coax but it should not be a problem at 35 feet.
From monoprice's website, under specs:

Double Shielded 3-Coax 4 Twisted Pair
Title: Re: Touch Screen performance with long VGA and serial cable??
Post by: BobA on October 11, 2007, 04:17:42 pm
Good catch. In that case cheap is good.

Title: Re: Touch Screen performance with long VGA and serial cable??
Post by: squirrellydw on October 11, 2007, 04:45:42 pm
so that monoprice one is ok then?  anyone wanna find a 50 foot serial cable that is good from them?

thanks
Title: Re: Touch Screen performance with long VGA and serial cable??
Post by: Green Giant on October 11, 2007, 05:02:30 pm
so that monoprice one is ok then?  anyone wanna find a 50 foot serial cable that is good from them?

thanks

Everything I have purchased from them is just as good as what you get from the overpriced monster cables at best buy.  They are probably made in the same place, just these come packeged in bubble wrap instead of a fancy package.
I even have my 50" tv hanging on a wall mount from them, really good stuff.

As for the serial cable, this should have what you are looking for.
http://www.monoprice.com/products/subdepartment.asp?c_id=102&cp_id=10212
Title: Re: Touch Screen performance with long VGA and serial cable??
Post by: NickG on October 13, 2007, 10:33:04 am

Does anyone find it odd that MonoPrice.com has different pricing depending on the number of units you buy? 

HA-ha! I finally understand your post.  It's because the name is Monoprice (as in one price)