Premium Members Dave Wowchuk Posted April 30, 2011 Premium Members Report Share Posted April 30, 2011 Hi everyone, I'm trying to power a Blackmagic HDMI->SDI mini-converter off of my Zephyr. I had a cable made to supply power from the sled, but the dang thing won't power up. It works fine with the AC adapter, and I know the 12v outs on the sled work fine. Anyone know what could be wrong? I thought I heard somewhere that the BM converters MUST have regulated 12v to work properly. Can anyone confirm this, or provide me with some assistance? Many thanks. Dave Quote Link to comment Share on other sites More sharing options...
Premium Members Charles Papert Posted April 30, 2011 Premium Members Report Share Posted April 30, 2011 Dave and I have conferred on this but for the benefit of others: feed the infernal Blackmagic boxes anything above 12.5v and they shut off. They need a regulator inline if you are using a 14.4v battery. They are commercially available (Switronix makes a p-tap cable with inline regulator). Quote Link to comment Share on other sites More sharing options...
Premium Members Jess Haas SOC Posted September 20, 2012 Premium Members Report Share Posted September 20, 2012 Is this still the case? Their Website lists them as accepting 12-31volts. What about the heavyduty version? Quote Link to comment Share on other sites More sharing options...
Premium Members Charles Papert Posted September 20, 2012 Premium Members Report Share Posted September 20, 2012 Think you meant 12-31v? The original convertor is still 12v maximum but both the heavy duty and the battery convertor versions are 12-31v. Looks like the battery convertor version is the same price as the original ($280 street) so that seems to be the one to get. Quote Link to comment Share on other sites More sharing options...
Premium Members Ryan Brooks Posted September 20, 2012 Premium Members Report Share Posted September 20, 2012 I just dealt with this issue a few months ago. Same exact piece and sled. Had to go with a cord that has an in-line regulator. East Coast Cables hooked me up well. I highly recommend using them to help with this problem. Quote Link to comment Share on other sites More sharing options...
Premium Members Wan Zhong Wei Posted September 30, 2012 Premium Members Report Share Posted September 30, 2012 the zephyr doesnt regulate the juice that comes from the v mount battery, my poor marshall monitor gets fried at 15v at full charge, slowly but surely... is either you get a lemo to 12v regulator to DC out, or you can purchase one of the V mount battery plate thingy http://www.ebay.com/itm/New-Fotga-DP500-BP-Battery-Power-Supply-w-V-Mount-for-DSLR-HDMI-with-USB-Socket-/280882145850?pt=LH_DefaultDomain_0&hash=item4165e16a3a they can regulate a v mount battery on top and output 5, 7.2 or 12v for your devices, i always hook that up and place it on my top stage, good excuse to increase my sled weight for stability as well. it is a good way to mount the camwave if you are using DSLRs, you get a v mount slot supposed by 15mm rods. and is affordable. cheers. Quote Link to comment Share on other sites More sharing options...
Premium Members David M. Aronson Posted October 1, 2012 Premium Members Report Share Posted October 1, 2012 Yeah, I killed my original downconverter powering it in with a fresh Dionic. I could almost hear it crying. I've yet to replace it, but the black magic things, specifically the older ones are really sensitive to voltage variations. Quote Link to comment Share on other sites More sharing options...
Premium Members Alan Rencher Posted October 3, 2012 Premium Members Report Share Posted October 3, 2012 That's weird. I keep hearing about this issue, but mine runs off of any power I throw at it. Maybe they fixed that problem at some point. 1 Quote Link to comment Share on other sites More sharing options...
Fabian Meller Posted November 1, 2012 Report Share Posted November 1, 2012 hey there! I recently got my (heavy duty) black magic sdi downconverter. For now I thought of using a common D-Tap to power it but I measured that one of my batteries got up to 15Volts. So I'm fairly concerned about that method - Now I heard the heavy dutys were supposed to work with a bit more than just 12V? Or should I consider another power supply? Maybe a customized 3pin LEMO to DC cable? Might the Aux Power off the sled go beyond 12V? (Having an old Artemis EFP) I'll appreciate your help :) Quote Link to comment Share on other sites More sharing options...
Premium Members Charles Papert Posted November 1, 2012 Premium Members Report Share Posted November 1, 2012 Specs on the heavy duty converter are 12-31v as indicated on the Blackmagic site, and here, above. You should be fine. There is also a battery converter version available that has the same heavy duty case plus inetrnal battery but is cheaper, inexplicably. Same price as the "classic" converter. That is also 12-31v. Quote Link to comment Share on other sites More sharing options...
Fabian Meller Posted November 1, 2012 Report Share Posted November 1, 2012 Thank You Charles! But now that I looked it up again (http://www.blackmagicdesign.com/products/miniconverterheavyduty/techspecs) it say 12V on the SDI to Analog one, whereas the other converters are 12-31v... Quote Link to comment Share on other sites More sharing options...
Premium Members Charles Papert Posted November 2, 2012 Premium Members Report Share Posted November 2, 2012 OK yeah, the downconverter is indeed 12v. I didn't notice that you described it as such. This is after all a thread about HDMI to SDI convertors. Blackmagic is a little erratic about their power conversion--it seems weird that some of their mini-convertors have upgraded high-voltage capability and others don't. Meanwhile: AJA still has some units that are 5v, and others that are fine with higher voltage. For the record, Decimators all take the voltage that a hot battery can dish out. Quote Link to comment Share on other sites More sharing options...
Premium Members Mark Schlicher Posted November 2, 2012 Premium Members Report Share Posted November 2, 2012 Some BM non-heavy duty mini converters (such as HDMI to SDI) used to be <14V only but have been redesigned with the wider power input, so they exist in the wild in a "gen 1" and "gen 2" flavors. Only way to distinguish is the serial number or by testing. Quote Link to comment Share on other sites More sharing options...
Premium Members Adi Visser SOC SASO Posted November 4, 2012 Premium Members Report Share Posted November 4, 2012 Hi I also recently bpought the heavy duty HDMI-HDSDI and 14.5 V works fine on my I think its the older ones that are a bit more sensitive. Adi Quote Link to comment Share on other sites More sharing options...
Fabian Meller Posted November 4, 2012 Report Share Posted November 4, 2012 (edited) OK yeah, the downconverter is indeed 12v. I didn't notice that you described it as such. This is after all a thread about HDMI to SDI convertors. Sorry, I didn't point that out but didn't want to open another thread. Only way to distinguish is the serial number or by testing. Excuse my probably dumb question but how would I test it and not destroying it? Edited November 4, 2012 by Fabian Meller Quote Link to comment Share on other sites More sharing options...
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