Prahlad Strickland Posted November 11, 2016 Report Share Posted November 11, 2016 I had a D-Tap cable made up for my QRX200, if i tap from the vlock on camera I get a horrible buzz in both channels. If I D-Tap a separate V-Lock the buzz is gone, seems like sharing camera power and the QRX 200 is causing some problems. The camera is a RED Raven. It has 2 D-Taps, one powers a zacuto gratical EYE, the other is on the battery and I want to power the QRX200 with that. Definitely don't want to have to use another source of power, any ideas why i'm getting a buzz? Quote Link to comment Share on other sites More sharing options...
Jack Norflus Posted November 11, 2016 Report Share Posted November 11, 2016 Ive had a similar issue with the Zacuto viewfinder - it creates some sort of ground loop. If you disconnect the viewfinder things should clear up - but unfortunately it becomes a sound problem and not a camera problem so the Zacuto stays and the wireless goes. Quote Link to comment Share on other sites More sharing options...
Prahlad Strickland Posted November 11, 2016 Author Report Share Posted November 11, 2016 The hi pitch noise is still there regardless if the Zacuto is plugged in. Sometimes when I plug the gratical in there is an extra noise. I wonder if for instance I dtapped a battery buds and forwarded power from there to the qrx. I wonder if that would isolate it. Or if there is a way to wire up a d-tap that could work. Also strange. Sometimes the noise is left only. Sometimes it's in both channels Quote Link to comment Share on other sites More sharing options...
glenn Posted November 11, 2016 Report Share Posted November 11, 2016 If camera input is not balanced this would be a ground loop problem. Call me in the office if I can help. Glenn Quote Link to comment Share on other sites More sharing options...
PTA Posted November 12, 2016 Report Share Posted November 12, 2016 Try lifting the ground on the audio cables out from the QRX. I had this with a C300 and the same powering setup, I snipped the ground on the XLRs and buzz was gone, audio was good! Quote Link to comment Share on other sites More sharing options...
Prahlad Strickland Posted November 23, 2016 Author Report Share Posted November 23, 2016 I snipped the ground wire on the QRX connector end, still buzzing the same. I'll call Glenn and see if we can come up with a fix, makes ENG work a trip, for now we just tapping from an additional battery mounted on a rear rail. Hoping can fix and go back to d-tapping from the main batt. Quote Link to comment Share on other sites More sharing options...
PTA Posted November 23, 2016 Report Share Posted November 23, 2016 14 hours ago, Prahlad Strickland said: I snipped the ground wire on the QRX connector end, still buzzing the same. I'll call Glenn and see if we can come up with a fix, makes ENG work a trip, for now we just tapping from an additional battery mounted on a rear rail. Hoping can fix and go back to d-tapping from the main batt. Interesting. I did snip on the XLR end, not sure if that would make any difference though. Quote Link to comment Share on other sites More sharing options...
WinstonC Posted December 6, 2016 Report Share Posted December 6, 2016 On 11/22/2016 at 10:10 PM, Prahlad Strickland said: I'll call Glenn and see if we can come up with a fix, makes ENG work a trip, for now we just tapping from an additional battery mounted on a rear rail. Did you ever come up with a fix that let you get back on the camera battery? Quote Link to comment Share on other sites More sharing options...
Prahlad Strickland Posted February 18, 2017 Author Report Share Posted February 18, 2017 no fix yet no, not sure where the problem is coming from. works on an arri mini, doesn't work on the dsmc 2 bodies. I'm still putting the blame towards zaxcoms direction since lectro works on both :-P No I can't say for sure, I need to call Glenn and try again get it working. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.