User manual RME DIGIFACE

[. . . ] User's Guide - Macintosh Hammerfall® DSP System Digiface TotalMix 24 Bit / 96 kHz ü SyncAlign ® TM ZLM ® SyncCheck ® PCI Busmaster Digital I/O System PCI and CardBus Interface 2 + 24 Channels Stereo / ADAT Interface 24 Bit / 96 kHz Analog Stereo Monitor ADAT Sync In Contents Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Technical Specifications 5. 1 Digital. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 5. 2 Digital Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 5. 3 Analog Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] For an operation at 88. 2 and 96 kHz sample rate the device 'ASIO Hammerfall DSP 96 kHz' has to be chosen. When the sample frequency is set to 88. 2 or 96 kHz, this driver operates all the ADAT optical inputs and outputs in Sample Split mode, so the number of available channels is reduced from 24 to 12. 13. 2 Performance The 'Audio Performance' settings are especially important. Firstly, the number of channels should be changed from 8 to 26 so that all the Hammerfall DSP's inputs can be accessed. If the first track is missing while recording multiple tracks, or the error message `Audio: Record Error' appears, the disk sub-system is too slow i. e. The problem can almost always be remedied by changing `Disk Block Buffer Size' from the default 64kB to 256kB. This is especially true if you want to record more than 12 tracks at the same time. 26 tracks are only possible after changing `Disk Block Buffer Size' to 256kB (depending on your computer). Please note that these parameters are only updated after clicking on `Apply'. User's Guide HDSP System Digiface © RME 16 The heyday of (expensive) SCSI hard disks in high-speed audio workstations is over. Today's cheap high-capacity EIDE disks allow continuous transfer rates of well over 10 MB per second. In practical terms, this is more than enough to record up to 24 simultaneous tracks using Cubase and Hammerfall!The Buffer Size value in Hammerfall DSP's Settings dialog determines the latency (in this case the delay) between the audio application and the HDSP as well as general system stability. The higher the value, the more tracks can be recorded and played back simultaneously and the longer the system takes to react. At the given maximum of about 0. 2 seconds, you will not notice much delay at all - the system will still respond quickly and smoothly. 13. 3 Synchronization To achieve sample-accuracy between the ADAT recorder and Hammerfall DSP while running Cubase, connect the ADAT sync output with the 9pin D-type sync input of the HDSP. The `Time Code' field in the Settings dialogue should now show the same position as the ADAT recorder. Double-clicking on the Sync button in Cubase's transport panel will open the `Synchronization' dialog. Select ASIO 2. 0 as the timecode base (under Sync Source), confirm the dialog with `OK', then activate Sync mode by (single) clicking on the Sync button. Cubase does not respond when the ADAT is set to `Play', please try the following: · · · · · · Check the cables Switch Sync off and on again (in Cubase's transport panel) Select `Reset Devices' from the Options menu. Switch on the ADAT recorder(s) before starting Cubase Use the BRC as Master and send its word clock to all other devices Use the Clock Mode ADAT Sync 13. 4 Known Problems In case the used computer has no sufficient CPU-power and/or sufficient PCI-bus transfer rates, then drop outs, crackling and noise will appear. We also recommend to deactivate all PlugIns to verify that these are not the reason for such effects. ASIO does not support asynchronous operation, which means that the input and output signals must not only have the same sample frequency, but they must also be in sync. All devices connected to the Hammerfall DSP must be properly configured for Full Duplex operation. As long as SyncCheck (in the Settings dialog) only displays 'Lock' instead of 'Sync', the devices have not been set up properly! User's Guide HDSP System Digiface © RME 17 14. [. . . ] RME does not accept claims for damages of any kind, especially consequential damage. The general terms of business drawn up by Synthax OHG apply at all times. 21. Appendix RME news, driver updates and further product information are available on our website: http://www. rme-audio. com If you prefer to read the information off-line, you can load a complete copy of the RME website from the RME Driver CD (in the \rmeaudio. web directory) into your browser. Trademarks All trademarks, registered or otherwise, are the property of their respective owners. RME, DIGI96, SyncAlign, SyncCheck, ZLM and Hammerfall are registered trademarks of RME Intelligent Audio Solutions. [. . . ]