Calibrating Neotek Elite II Meters

[Ron Flack]

Greetings all,

I'm attempting to calibrate the analog VU meters with MIX L-R selected under METER INPUT so that they match the LED VU meters with the master fader at 0.

When I select Reference Level under OSCILLATOR The analog VUs read 0 as you'd expect, the LEDs read something like +.5 (2 of the red leds are lighted).

Last part of this saga is the direct OSC output on the patchbay is reading -15.8 DBFS (measured in Logic pro via UAD Apollo). I've confirmed that the interface line-ins are set at +4dbu.    .

It appears that the OSCILLATOR is too hot... well, I think.  Is it that the OSCILLATOR at "Reference Level" is too hot OR are the meters calibrated incorrectly?  Who's the liar here?

Any thoughts would be greatly appreciated.

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Ron Flack

Artist Development, Recording Engineer

Realgrey Records LLC / +1(330) 546-2049 

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[Mike S.]

Hi Ron

dBFS is not defined for analog levels, according to standard AES-6id-2006. No single standard converts between digital and analog levels, mostly due to the differing capabilities of different equipment. The amount of oversampling also affects the conversion with values that are too low having significant error. The conversion level is chosen as the best compromise for the typical headroom and signal-to-noise levels of the equipment in question.

Mike

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[Casey Rice]

Ron,

You can also put a meter on the (patchbay) output of your oscillator to confirm that you are sending a 0dB reference for +4 line level.  It should be about 1.23V.  Sometimes the detent will not sit right on the correct reference level in my experience.

Casey

[Robert Stevens]

There is a pot on the master signal generator module to set the level of the oscillator when the 0VU button is pushed. Make sure machine has warmed up completely before setting the pot. Measure at the OSC out jack on the patchbay for ~1.23V RMS.  Then calibrate your VU meters. FWIW, on my Elite, the voltage starts off at about 1.33V on power on then slowly drifts downward to about 1.23 after about 2 hours.

[Robert Stevens]

Also, if my memory serves, the adjustmenht pot is on the wrong side of the module circuit board to adjust it directly, however, there is a hole in the back of the circuit board that lets you access the pot from the side with all the master modules in place, so it can be adjusted while the system is on.  You may need to pull 1 or 2 channels to the right of the master section depending on how long your tweeker is.

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