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#1
10-02-2013, 04:31 PM
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Is My Scope Screwed for AC Testing
Okay, just found a 125VAC connection in the set (feeds the front panel lights). I measured with my DMM and got 117.8VAC. I then set my scope to AC coupling, 50V/Div and probe in 10x so I should see a waveform taking up roughly 2.3 divisions as the AC is 117VAC. I'm attaching a picture of what I got and you can see the settings on the scope. I'm no expert, but I don't think 117VAC should take up 6.5 division for a voltage of roughly 325V.
Am I wrong? Is this a problem with the scope, the probe or (hopefully) user error?
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Pioneer SX-1080, Pioneer PL-115D, Pioneer CT-F9191, Pioneer RG-1, Wollensak 8050A, Akai 4000DS MkII, Pioneer CS-05 & Polk 1.2TL Denon 5803A, Pioneer DVL-700, Pioneer CT-W603RS, Toshiba HD-A3, D-Link DSM-520, Dish VIP-722, Polk 1.2TL, CSi5, LS/fx, RT-800 and PSW-650 
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#3
10-02-2013, 04:59 PM
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Quote:
So I now know it's measuring AC voltage correctly. Time to test the other voltages around the H-Pulse to see if they're within range. Thanks for being patient with me while I learn.
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Pioneer SX-1080, Pioneer PL-115D, Pioneer CT-F9191, Pioneer RG-1, Wollensak 8050A, Akai 4000DS MkII, Pioneer CS-05 & Polk 1.2TL Denon 5803A, Pioneer DVL-700, Pioneer CT-W603RS, Toshiba HD-A3, D-Link DSM-520, Dish VIP-722, Polk 1.2TL, CSi5, LS/fx, RT-800 and PSW-650
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#4
10-02-2013, 06:13 PM
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One note on RMS it only has that mathematical correspondence to peak voltage with a basic sine wave like what you get from an outlet. Any other wave form will have a different mathematical correspondence and the more complex the wave form the more complex the math...
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Tom C. Zenith: The quality stays in EVEN after the name falls off! What I want. --> http://www.videokarma.org/showpost.p...62&postcount=4
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Linear Mode
