RME Audio Digiface Ravenna, User Manual

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30 User's Guide Digiface Ravenna
© RME
17. Hotline
– Troubleshooting
Playback works, but record doesn’t:

Check that there is a valid signal at the input. If so, the current sample frequency is displayed
in the Settings dialog.

Check whether the Digiface Ravenna has been selected as recording device in the audio ap-
plication.

Check whether the sample frequency set in the audio application (‘Recording properties’ or
similar) matches the input signal.
Crackle during record or playback:

Increase the number and size of buffers in the application.

Try different cables (coaxial or optical) to rule out any defects here.

Check that cables/devices have not been connected in a closed loop. If so, set the system’s
clock mode to ‘Master’.

Check the Settings dialog for displayed Errors.
Driver installation and Settings dialog/TotalMix work, but a playback or record is not possible

While recognition and control of the device are low bandwidth applications, playback/record
needs the full USB transmission performance. Therefore, defective USB cables with limited
transmission bandwidth can cause such an error scheme.
Where do I set the sample rate?

In the RAVENNA Remote, for the device that is currently the Grand Master Clock for the
whole RAVENNA network. ASIO, WDM or Core Audio have no control over that.
Is it possible to change the sample rate when using MADI only?

Not possible.