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mytek stereo 192 - unity gain?
Old 23rd September 2010
  #1
Gear Head
 

mytek stereo 192 - unity gain?

anyone know where I should set the gain knob for unity gain on the mytek stereo 192 adc?
Old 23rd September 2010
  #2
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kooz's Avatar
 

Can you not send the inputs a signal at your reference level?
Also, IIRC, there is a jumper inside to bypass the input pot for a fixed +4dBu input.
Have you RTFM? it's available for DL at the mytek site.
Old 23rd September 2010
  #3
Gear Head
 

Yes, I've read the manual. I didn't see the answer to my question, which is why I asked it here. Maybe I just missed it (certainly possible)
Old 23rd September 2010
  #4
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Teddy Ray's Avatar
 

yes, there is a bypass jumper. the pot is just an attenuator.
Old 23rd September 2010
  #5
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Quote:
Originally Posted by Teddy Ray View Post
yes, there is a bypass jumper. the pot is just an attenuator.
so knob/pots all the way up is no gain/no attenuation?

thanks, Teddy. I thought that was the case but wasn't sure
Old 24th September 2010
  #6
Gear Addict
 

Quote:
Originally Posted by scb View Post
anyone know where I should set the gain knob for unity gain on the mytek stereo 192 adc?
Just to clarify terms a bit. You cannot set ADC alone or DAC alone to unity gain. It has to be both. Concept of "unity gain" refers to the signal staying in the same domain analog<>analog or digital<>digital. If signal on output equals input then you have unity gain.

The manual of the ADC explains the concept of headroom required for converter calibration. It's usually referred to as +4dB (or 0 VU) = - XdBFS where X is typically btwn -20 and -14dBFs.

If you'd like a unity gain from your ADC , DAC chain (assuming DAC gain is fixed or calibrated already) I recommend this:

1. Generate sinewave at -18dBFS in the computer and send it to DAC out
2. Connect DAC out to ADC in and set the ADC trimpots so a digital meter in the computer reads exactly -18dBFS

You can use any other number than 18 if you wish with the same result

Best Regards Michal, Mytek New York
Old 24th September 2010
  #7
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Teddy Ray's Avatar
 

Quote:
Originally Posted by scb View Post
so knob/pots all the way up is no gain/no attenuation?

thanks, Teddy. I thought that was the case but wasn't sure
yes
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