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Photo Forum / Digital Photography / DSLR Cameras / January 2008D200 and flash trigger voltage
Does anybody know if the Photogenic Powerlight 1500SL trigger voltage is too high for the Nikon D200? > Does anybody know if the Photogenic Powerlight 1500SL trigger voltage is > too high for the Nikon D200? According to the manufacturer, older Photogenic units have a trigger voltage between 12 and 15 volts: http://www.photogenicpro.com/customer_service/FAQ.asp When in doubt, I relax, don't worry, and use a Wein Safe-Sync.  SignatureMichael Benveniste -- mhb-offer@clearether.com Spam and UCE professionally evaluated for $419. Use this email address only to submit mail for evaluation. > > Does anybody know if the Photogenic Powerlight 1500SL trigger voltage is > > too high for the Nikon D200? [quoted text clipped - 5 lines] > > When in doubt, I relax, don't worry, and use a Wein Safe-Sync. Thanks I'll look into the wein safe sync In article <jesuschrist-2A09B2.19550126012008@news.dallas.sbcglobal.net>, > Does anybody know if the Photogenic Powerlight 1500SL trigger voltage is > too high for the Nikon D200? According to Nikon technical support when I called them, I was told the D200 is safe for flash up to 250 volts. Thats DC current- BTHW. What's interesting that is; since the Nikon flash SB800 and SB600 have trigger voltages around 3.3 volts at the pins, I wonder how accurate that information is. Since the D200 has a PC connection you have multiple options with regard to the Wein Products Pronounced "Wine". You can view them all at: www.omegasatter.com SignatureReality is a picture perfected and never looking back. >In article ><jesuschrist-2A09B2.19550126012008@news.dallas.sbcglobal.net>, [quoted text clipped - 4 lines] >According to Nikon technical support when I called them, I was told the >D200 is safe for flash up to 250 volts. Thats DC current- BTHW. What's It's peak *voltage*, *not* "DC current", and doesn't really matter if it is DC or AC. (Just keep in mind that most AC voltages are not described in terms of a "peak voltage", but as RMS or some other form.) The point is that no voltage under any circumstance should approach 250 volts on the D200 flash sync lead. >interesting that is; since the Nikon flash SB800 and SB600 have trigger >voltages around 3.3 volts at the pins, I wonder how accurate that >information is. It is probably very conservative. The trigger voltages for the Nikon flash units are not related in any way. They must also work on many other cameras, some of which cannot tolerate more than 6 volts on the sync lead. >Since the D200 has a PC connection you have multiple options with regard >to the Wein Products Pronounced "Wine". > >You can view them all at: > >www.omegasatter.com <http://www.weinproducts.com/safesyncs.htm> SignatureFloyd L. Davidson <http://www.apaflo.com/floyd_davidson> Ukpeagvik (Barrow, Alaska) floyd@apaflo.com >It's peak *voltage*, *not* "DC current", and doesn't >really matter if it is DC or AC. Can you prove there is a higher backfeed of current? If your using a volt meter it matters, you can't read AC current with a DC reading meter, can you? (Just keep in mind that most AC voltages are not described in terms of a "peak voltage", but as RMS or some other form.) As in cycles :) The point is that no voltage under any circumstance should approach 250 volts on the D200 flash sync lead. > >www.omegasatter.com > > <http://www.weinproducts.com/safesyncs.htm> Omega Satter is the distributer and has more in depth an in most instances more recent product info. SignatureReality is a picture perfected and never looking back. >>It's peak *voltage*, *not* "DC current", and doesn't >>really matter if it is DC or AC. > >Can you prove there is a higher backfeed of current? Why would I, and what is "a higher backfeed of current"? My point was that you don't care about current, you care about peak voltage. >If your using a volt meter it matters, you can't read AC current with a >DC reading meter, can you? If you are smart enough, yes. But the point is that using a plain DC DVM is probably not going to give an accurate reading. It should be looked at with a scope, though I'll grant that if a DVM gives a relatively low static reading (say 40 volts), I wouldn't be too concerned. But if it is 190V, I'd get a scope to be positive. >(Just keep in mind >that most AC voltages are not described in terms of a >"peak voltage", but as RMS or some other form.) > >As in cycles :) No. "Root Mean Square" gives you the same *effective* values as you would have for DC at that value. It's useful for power calculations. >The point is that no voltage under any circumstance >should approach 250 volts on the D200 flash sync lead. [quoted text clipped - 5 lines] >Omega Satter is the distributer and has more in depth an in most >instances more recent product info. I didn't find much of anything on the omegasatter page. One product, and not details. SignatureFloyd L. Davidson <http://www.apaflo.com/floyd_davidson> Ukpeagvik (Barrow, Alaska) floyd@apaflo.com > >>It's peak *voltage*, *not* "DC current", and doesn't > >>really matter if it is DC or AC. > > > >Can you prove there is a higher backfeed of current? > > Why would I, and what is "a higher backfeed of current"? A Higher voltage at the moment that the flash is triggered. That way I understand the PC connection is the your basically just closing a loop and the volts read at the pins of shoe flash or the pin and shield represent the trigger voltage of the flash in question: unless there is a surge (back-feed from the pack that produces a higher spike) beyond the reading I just referred to. > My point was that you don't care about current, you care > about peak voltage. > > >If your using a volt meter it matters, you can't read AC current with a > >DC reading meter, can you? > If you are smart enough, yes. But the point is that > using a plain DC DVM is probably not going to give an > accurate reading. Granted you can mathmatically translate DC to AC. > It should be looked at with a scope, though I'll grant > that if a DVM gives a relatively low static reading (say > 40 volts), I wouldn't be too concerned. But if it is > 190V, I'd get a scope to be positive. I've actually measured and been shocked by a few of those kind :) > >(Just keep in mind > >that most AC voltages are not described in terms of a [quoted text clipped - 18 lines] > I didn't find much of anything on the omegasatter page. > One product, and not details. One most plug "Wein" into the search on the front page, you'll get all the items listing that way and yes they have a rather kludgey website. SignatureReality is a picture perfected and never looking back. >> >>It's peak *voltage*, *not* "DC current", and doesn't >> >>really matter if it is DC or AC. [quoted text clipped - 4 lines] > >A Higher voltage at the moment that the flash is triggered. Okay. (Why call it current? That is *not* the same as voltage.) >That way I understand the PC connection is the your basically just >closing a loop and the volts read at the pins of shoe flash or the pin >and shield represent the trigger voltage of the flash in question: >unless there is a surge (back-feed from the pack that produces a higher >spike) beyond the reading I just referred to. One possibility is that if there is any amount of inductive reactance in the circuit, it might very well have a spike. The other problem is that DVM's read average voltage, and if the actual voltage is only there for a short time, the voltage read by the DVM may or may not be accurate. Using a higher quality oscilliscope to measure the voltage is a better method. >> My point was that you don't care about current, you care >> about peak voltage. [quoted text clipped - 7 lines] > >Granted you can mathmatically translate DC to AC. Forget about AC and DC. That has nothing to do with it. Peak voltage is all that counts. SignatureFloyd L. Davidson <http://www.apaflo.com/floyd_davidson> Ukpeagvik (Barrow, Alaska) floyd@apaflo.com > Using a higher quality oscilliscope to measure the > voltage is a better method. Most people don't them laying around -though. > Forget about AC and DC. That has nothing to do with it. > Peak voltage is all that counts. Never said it did - point taken though. SignatureReality is a picture perfected and never looking back. ===0\==>In article <87r6g1a2z2.fld@apaflo.com>, >> Using a higher quality oscilliscope to measure the >> voltage is a better method. > >Most people don't them laying around -though. Most people should not expect to accurately determine what the voltage is. They should defer to those who have the equipment _and_ the know how. >> Forget about AC and DC. That has nothing to do with it. >> Peak voltage is all that counts. > >Never said it did - point taken though. You kept making statements about AC, reading AC with a DC meter, etc. etc. All of which was nonsense. SignatureFloyd L. Davidson <http://www.apaflo.com/floyd_davidson> Ukpeagvik (Barrow, Alaska) floyd@apaflo.com > ===0\==>In article <87r6g1a2z2.fld@apaflo.com>, > > [quoted text clipped - 14 lines] > You kept making statements about AC, reading AC with a > DC meter, etc. etc. All of which was nonsense. Yes & your PITA too :) SignatureReality is a picture perfected and never looking back. > Does anybody know if the Photogenic Powerlight 1500SL trigger voltage is > too high for the Nikon D200? I was told the max power on a D200 synch cord is 67 volts, but only 12 volts on the flash shoe, surprising how many older flashes excede this. Wein safe synch is the way to go if you are in doubt. Tom |
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