Max voltage on 30d

[Jonathan Hutt]

I've heard (key word: heard) various reports on the maximum voltage that a 30D can safely withstand when using off-camera strobes with a PC sync cord. I've got a sunpak 120 J whose output has been measured at anywhere from 10-11.5 V. I'm powering it with a Quantum Turbo, if that makes a difference.

So - Is this safe to sync with my 30d? Specifically, if anyone has links to actual published data/limits by Canon, that would be particularly helpful.

Thanks!

[Duke Beattie]

In this article Chuck Westfall says 250v for 20d and 1d bodies.. So where I saw the xt is also 250v.. Maybe you could write him an email to clear it up... 11v isn't much.. it's that 250v to 400v that will get you.....

http://digitaljournalist.org/issue0505/westfall.html

[Sean DeMerchant]

Originally Posted by Jonathan Hutt

I've heard (key word: heard) various reports on the maximum voltage that a 30D can safely withstand when using off-camera strobes with a PC sync cord. I've got a sunpak 120 J whose output has been measured at anywhere from 10-11.5 V. I'm powering it with a Quantum Turbo, if that makes a difference.

So - Is this safe to sync with my 30d? Specifically, if anyone has links to actual published data/limits by Canon, that would be particularly helpful.

Thanks!

My understanding IIRC (If I Remember Correctly, keyword understanding if :) is that the allowable flash sync voltage for the 20D, 30D, XT/350D, and other newer Canon bodies is 250 volts.

http://www.google.com/search?num=50&...n+sync+voltage

So you should be safe.

Nonetheless, I would test the flash with a multimeter to see what voltage it harbors across the leads when you have it attached to the battery pack (checking for non-standard behavior).

And as always you can buy Wein Safe-Sync or similar product to ensure your voltage requirements are met.

all the best,

Sean