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  #1  
Old 10-29-2009, 05:14 PM
kenP kenP is offline
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UPS + HD-PVR
Does anyone have reason to believe that the non-sine wave output
of a UPS affect the stability of the HD-PVR?
I seem to be having more lock up problems after adding the UPS.
Thanks
Ken
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  #2  
Old 10-29-2009, 06:43 PM
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stanger89 stanger89 is offline
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Not really, because "non-sine wave output" UPS's only output non-sine waves when they're running on batter power, so as unlikely as it would be to be a problem (the waveform) it would only be an issue when the power's out.
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Old 10-30-2009, 12:20 PM
kenP kenP is offline
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Good point Stanger. Guess I'm guilt og grasping at hdpvr straws
ken
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Old 10-30-2009, 12:36 PM
briands briands is offline
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Isn't it a DC device???
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  #5  
Old 10-31-2009, 07:34 PM
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hemicuda hemicuda is offline
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Quote:
Originally Posted by briands View Post
Isn't it a DC device???
That depends on how well the HD-PVR Power Supply filters out higher order harmonics from the steps in non-sine UPS'. Those things can wreak havoc on the proper function of sensitive electronics. We have equipment where I work that flat refuses to have any accuracy at all unless it's tied to a wall outlet (no welders nearby) or a pure-sine UPS.
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Old 10-31-2009, 09:16 PM
Savage1701 Savage1701 is offline
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Yeah, I was wondering that as well - don't some UPS's put out far higher quality sine waves than others (I'm thinking APC double conversion) ?
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  #7  
Old 10-31-2009, 11:31 PM
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I have two UPS units in my rack, one for the computers, routers, and switches, and a second AV-grade unit for the receivers and amps.
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