Please exscuse my ingnorance on the subject but are we talkin about calibrating the metering in said DAW to ensure it reads accurate to the level the AD is seeing? If not what is the calibration and can it be done to a RME Fireface?
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Originally Posted by doug_hti Haven't used Lavry, but I'm guessing there is an input pot to adjust for calibration.
You need a true RMS multimeter to measure voltage.
A bit of the problem is that your LE system can't be calibrated on it's converter, so the output will remain fixed (prob -18ish).
Once you have the multimeter reading ac voltage hook a cable out of your Protools interface with nothing else between, put some bare wires, or whatever it takes to get a signal to the multimeter.
In pro tools set up signal generator out of one of the outputs, use a 1k tone and adjust the ouput level of it (signal generator) until your multimeter reads 1.43 volts. Once you get it as close as possible (to the 10th of a decibel from "signal generator") then don't touch a thing.
Open up two mono aux tracks, solo safe them, bus the outputs to an unused "bus" so "bus 25 or something). Adjust the inputs to be coming from the Lavry A/D....(so digital 1 and 2 or whatever your I/O setup says). Just make sure the output is NOT NOT NOT 1/2 or your main output or you will have a feedback loop.
In ProTools (maybe under setup), put the software into "calibration mode". This will continuously reset the peak input on the meters (where it reads the numbers on the channel strip) (press option/click on numbers to cycle through if it doesn't automatically go to continuous peak input on numbers (in mix window)
now feed your output to the A/D input and adjust the A/D pot until your protools peak input meter reads -16.
PM me if you need further help. The only thing, I'm not sure if LE has calibration mode, but I'm pretty sure it does.
Just remember your outputs (if using stock converts) will not be at -16 of full scale.
And you will see what they are pretty much calibrated at while finding the right output level on the signal gen |