Eric Toline
Forum Replies Created
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Bob Cole Re: Sound Devices 302 > 702 Signal Chain
by Bob Cole on Apr 12, 2013 at 6:17:59 am[Eric Toline] “Remember there’s a 20db difference between the mixers meters and the cameras meters so “0” on the mixer is really -20 on the camera”
Eric, is that true of all cameras?
—————————————————————-It has to do with the mixer meter settings. Most mixers send a fixed “0” level tone, digital recording devices (cameras & recorders) want to see a -20dbfs reference tone level although there are some cameras that have a -12dbfs reference mark but you can figure out where -20 would be on them. Broadcast defacto standards are tone at -20dbfs and peaks at -10dbfs.
If you cover the “0” mark on your mixer with a piece of tape and write on it -20 instead then when you look at your mixer you won’t have to do the math. The meter scales on the Zaxcom Nomad & Sound Devices 664 send a “0” tone but it shows as -20dbfs on their meters.
Hope this helps to clear up any confusion
Eric
“I push the RECORD button and hope for the best”
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Greg, Call me: 954-255-7628. Lot easier than typing.
Eric
“I push the RECORD button and hope for the best”
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Forgot about the 702, sorry. You can set the XLR inputs on the 702 to mic level also. One important thing to keep in mind before you start plugging things together is to RTFM’s to familiarize yourself with how the units work. All the answers are in the manuals, you just have to ask the right questions. Good luck & have fun.
Eric
“I push the RECORD button and hope for the best”
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Go into the 302 menu and reset one or both XLR output connectors to mic level.
To start from the top, set your transmitter to a -20 sensitivity & your receiver to -20 output level. Set the 302 input to mic level. Using the Male XLR to the 3.5mm trs male connector cable, connect the receiver to the 302.
You will need a female XLR to a 3.5 mm TRS (Tip, Ring, Sleeve)male plug that goes into your mini mic connector on your camera from the male XLR on the mixer. Send a tone from the mixer to the camera and set the camera level to -20db to start.
Do not use any auto level setting on the camera, be sure all AGC or auto level functions are OFF. Do any level adjustments on the mixer once you’re rolling, keep the peaks on the camera to about -10dbfs and you’ll be fine.
Remember there’s a 20db difference between the mixers meters and the cameras meters so “0” on the mixer is really -20 on the camera, don’t be afraid to get your mixer levels up to +8, that’s only -12 on the camera and you still have 8db of headroom before digital zero.
Eric
“I push the RECORD button and hope for the best”
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Not a big call for a $1400 standup mic with a built in recorder. HHb has discontiued their flash mic. Use a pocket recorder or your iphone.
Eric
“I push the RECORD button and hope for the best”
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I have the exact same equipment as you do. First set up your wireless with the tx set for -20 on it’s sensetivity, then set the receiver for -20 output level. Now adjust the DR 40 input level so your peaks get up to the little upside down triangle which is -12 on the meter scale, that should be about 60 or so in the little pop up window when you push the level set + button. All should be good now.
Eric
“I push the RECORD button and hope for the best”
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Even if it could be changed which it can’t it wouldn’t be worth the effort. You can still use the old frequency as I doubt anyone would know but how clear the old frequency would be is another issue. Best advice buy new gear in the approved blocks.
Eric
“I push the RECORD button and hope for the best”
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I didn’t a didn’t add any BC’s since I couldn’t find any info about a powered mic connection on the camera. Based on my knowledge of other DSLR’s like the Canon’s I believe the mic input is unpowered. OTOH if I’m wrong about the powering issue it’s never been a factor. OTOOH I only plug wireless hop’s into DSLR’s as a scratch feed to be used as a sync track with Plural Eyes & the like.
Eric
“I push the RECORD button and hope for the best”
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As an FYI, Yesterday I made the OP an adapter (2xXLR-F to 3.5mm TRS, wired unbalanced)cable that allows two mics to connect to the camera.
Eric
“I push the RECORD button and hope for the best”
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Also take a look at the shock mounts from K-Tek https://ktekbooms.com
Eric
“I push the RECORD button and hope for the best”