Question about NEC MultiSync NP2000 LCD Projector

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Two projectors controled by one computer and one is fuzzier.

We have two projectors in two rooms divided by an air wall. When the wall is retracted both projections can be seen when the room is combined and one computer is used to run both projectors. When we have it setup this way one picture appears to be fuzzier than the other. Both projectors are brand new so this is not a projector issue. It mat be a splitter issue but would like to know what other possibilities could be causing this. These are NEC projectors controled through an Extron 226 system.

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This is only a theory: Assuming that this setup is in an office, there is a high probability that the lighting is fluorescent. This type of illumination is NOTORIOUS for causing AC interference with video signals. It is hard to suppress because there are AC lines *all around* acting like antennas. If you use shielded video feeds, make sure all circuits are properly grounded(and *isolated* in extreme cases) to minimize EFI. (electrical frequency interference) The fact that 2 projectors are connected to a single computer lends credence to an interference problem--grounding is usually the culprit--not the computer, but all the junk connected to the ground wires--fans, lights, air-conditioning motors, refrigerators, you name it...You might want to check into getting a power conditioner or filter to "clean up" the electricity in that particular room. Video and audio signals are delicate--just turn up the sound loud, with nothing being broadcast, and listen to the AC hum in the static. Those are my thoughts anyway...hope I was useful!---rick

Posted on Sep 08, 2009


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