User Manual

Preparing to Capture Audio
208
Calibrating Audio Hardware for Avid Nitris DX and Avid Mojo DX
By default, your Avid editing application is calibrated for analog 0 Volume Unit (VU) to be
digital –20 dBFS, which matches the default calibration of the Avid Nitris DX and Avid Mojo
DX hardware.
You can do two things to calibrate audio — make the audio adjustment to correspond to your
hardware calibration setting by using the default, or refine the calibration to get to within 1/4 dB.
This will require using additional test equipment — an external calibrated signal generator, a
voltmeter, or an oscilloscope.
The Audio Hardware Calibration window lets you change your audio hardware calibration. The
calibration settings are stored in the Avid Nitris DX or Avid Mojo DX, and moved with the
hardware if it is moved to another computer. If you delete the project, user, or site settings, or
reinstall your Avid editing application, the settings are saved in the hardware.
If you have already calibrated your analog audio outputs, you can use the Avid Play Calibration
Tone generator by connecting one channel’s output to another channel’s input.
To calibrate the audio channels for Avid Nitris DX or Avid Mojo DX using the Audio
Hardware Calibration tool:
1. Connect the analog outputs to the analog inputs on the back of the Avid Nitris DX or Avid
Mojo DX.
2. Double-click Audio Project in the Settings list of the Project window.
3. Click the Hardware tab.
4. Click the HW Calibration menu, and select a new default hardware calibration setting:
–14 dBFS, –18 dBFS, or –20 dBFS.
A message box opens warning that changing the Hardware Calibration must be
synchronized with physical changes to your Audio I/O peripheral.
5. Click OK.
6. Click the Open Calibration window.
The Audio Hardware Calibration window opens.