[AG-TECH] Re: AG Projector options?

[Jay Beavers]

I'd add automation and heat generation.
 
For automation, it can be important to be able to turn the projector on and off programmatically.  We've bought Epson 7xx series of projectors for this.
 
For small environments, you may also run into heat problems.  We've used two Compaq micro portable projectors for most of our demos, but they put out enough heat to burn your hand if you leave it near them and to run a small room temperature up quickly.  If you have a small enclosed room and 3 high heat projectors, you might be overworking your air conditionning.
 
 - jcb

	-----Original Message----- 
	From: Marty Hoag [mailto:Marty.Hoag at NDSU.NODAK.EDU] 
	Sent: Wed 7/17/2002 8:03 PM 
	To: ag-tech at mcs.anl.gov 
	Cc: 
	Subject: [AG-TECH] Re: AG Projector options?
	
	

	   A couple things are "more interesting" in the AG uses:
	
	   Noise might be important depending on the acoustics of the room.
	We have some sony's rated at 34 dB (the old VPL-PX20s) and
	at the time we got them very few projectors even published the audio
	noise level. Our room is fairly good acoustically (dead) so when they
	are on you can hardly hear them.  Having low ambient noise is very
	important for your overall audio environment and projectors and PCs
	(which can be put in a closed rack) are common sources.  One problem
	with projectors is that specific models don't last long.  I've seen
	some around 40 dB (I think that would be 4 times the noise of 34 dB)
	but I think manufacturers are starting to take that into account.
	
	   The other "unusual" thing is that you are running the three (or
	whatever) projectors edge to edge.  That means things like color and
	brightness uniformity are important (and I don't think that is a
	strong point of LCD projectors).  We have one which has a noticeable
	color shift from left to right.  You would probably not notice it if
	you didn't have that reference of the other projectors on either side.
	
	   Marty