User`s guide
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User's Guide HDSP MADI © RME 
21. DIGICheck Mac 
Not available for Apple PPC. 
22. Hotline – Troubleshooting 
The newest information can always be found on our website www.rme-audio.com, section Sup-
port, Macintosh OS. 
Playback works, but record doesn’t: 
•  Check that there is a valid signal at the input. 
•  Check whether the Hammerfall DSP has been selected as recording device in the audio 
application. 
•  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 application. 
•  Try different cables to rule out any defects here. 
The card and drivers have been installed correctly, but playback does not work: 
•  Is Hammerfall DSP listed in the System Profiler/PCI? (Vendor 10EE, Device ID 3FC6). 
•  Has Hammerfall DSP been selected as current playback device in the audio application? 










