User manual

8X96 ADC and DAC User Manual Page 7 of 54
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8X96 Converters are microprocessor controlled and as such are subject to static
interference. If unusual circumstances such as a lightning storm cause any malfunctions,
reboot the unit. For further questions regarding setup and features contact your dealer or
Mytek technical support.
8X96 ADC – Analog Input Alingment
Before using the 8X96ADC you need to align its analog inputs. The alignment generally
does not affect audio quality, only input sensitivity. The alignment is performed using 10
turn trimpots on the front panel. A small tweaker or screwdriver is necessary.
You have to arbitrarily decide what will be your studio "0 VU" analog/digital reference
level. It is usually between -20 and -14dB. It defines how much headroom you have left
over the normal operating "0 VU" level. You may set it at the same level as other piece of
equipment in your studio. For example Panasonic 3700 is fixed at -18dB (which is low
for most rock and roll recordings). ADAT is fixed at -15dB which is an optimal level.
1.Set the oscillator in your console at 1kHz and "0 VU". Send the oscillator
to the interface analog input."0 VU" at + 4dB corresponds to 1.225 Volts
RMS measured between pin 2 and 3 of the output XLRs. If you do not have an analog
oscillator, you can use a calibrated analog out of a DA converter and generate sinewave
inside the DAW.
2.Select the "analog input". Connect a digital meter to a digital output. If
you don't have a dedicated digital meter use the most precise meter
available in you existing digital recording equipment or DAW.
3. Adjust the analog input level to get appropriate reading of the meter
(for example -15dB).
4. Repeat the same for all analog channels.