Hotline - Troubleshooting - RME Audio Fireface UFX User Manual

13. Hotline – Troubleshooting
The newest information can always be found on our website www.rme-audio.com, section FAQ,
Latest Additions.
The 8 ADAT channels don't seem to work
• The optical output ADAT2 has been switched to AES/SPDIF. As can be seen in the block
diagram, all channels and their assignments still exist, but the optical transmitter has been
disconnected from ADAT2 and is now fed from the AES output (channels 13/14). The
ADAT2 playback devices are still usable by routing and mixing them in TotalMix to other out-
puts.
Playback works, but record doesn't
• Check that there is a valid signal at the input. If so, the current sample frequency is dis-
played in the Settings dialog.
• Check whether the Fireface UFX has been selected as recording device in the audio appli-
cation.
• Check whether the sample frequency set in the audio application ('Recording properties' or
similar) matches the input signal.
• Check that cables/devices have not been connected in a closed loop. If so, set the system's
clock mode to Master.
Crackle during record or playback
• Increase the number and size of buffers in the 'Settings' dialog or 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 FireWire transmission performance. Therefore, defective FireWire cables with
limited transmission bandwidth can cause such an error scheme. The same is true for USB
cables.
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User's Guide Fireface UFX © RME