User Manual

Preparing Record Tapes

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For example, if you have 8 channels of HD SDI output enabled and attempt to change the sample

rate to 96 kHz, the system displays the message.

In this example you can switch the project to 96 kHz, but if the SDI outputs are enabled, the

system will convert all audio output to 48 kHz.

This affects all audio outputs, not just the SDI outputs. That means AES/EBU output will

be converted and any Analog output will also be converted. This could result in a quality

loss for the Analog signal.

The way to prevent the automatic conversion is to turn off the SDI output. Then you can change

to 96 kHz and output an Analog or AES/EBU signal without any conversion. You can change to

SDI output later and output a 48 kHz embedded audio signal using hardware sample rate

conversion.

Using an XLR Adapter for Consumer-Level Analog Output

When you select Consumer level for Analog Output, analog outputs are attenuated by 6 dB. To

achieve an additional 6 dB of attenuation, you must use an adapter that provides an unbalanced

XLR connection. The correct adapter provides ground on pin 1 and a line signal on pin 2. Many

off-the-shelf connectors supply line level on pin 1 and return on pin 2 or else they short the signal

on pin 2 to pin 3. This results in a signal that is 6 dB too high for consumer equipment.

If you want to provide additional attenuation, use the master gain slider on the Output panel of

the Audio Project Settings dialog box.

For Avid Nitris DX or Avid Mojo DX, when attaching to consumer level equipment, set the

Output calibration for the corresponding outputs to -12 dB in the Audio Hardware Calibration

tool.

Preparing Record Tapes

There are two basic methods of recording to tape:

• Frame-accurate recording by using the Digital Cut tool to record your sequence onto either a

prestriped tape (a tape with prerecorded control track and timecode) or a partially striped

tape

• Manual recording by using controls on the record deck

Each of these methods requires different treatment of the record tapes.