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21.3 Supported Sample Rates<br />
<strong>RME</strong>'s Mac OS X driver supports all sampling frequencies provided by the hardware. Besides<br />
192 kHz and 96 kHz this also includes 32 kHz and 64 kHz.<br />
But not every software will support all the hardware's sample rates. For example Spark does<br />
not display 32 kHz and 64 kHz. The hardware's capabilities can easily be verified in the Audio<br />
MIDI Setup. Select Audio devices under Properties of: and choose the Hammerfall <strong>DSP</strong>. A<br />
click on Format will list the supported sample frequencies.<br />
If the unit is in clock mode Master, selecting a sample rate will immediately set the device to<br />
this frequency, which can be verified in the H<strong>DSP</strong>'s settings dialog (<strong>System</strong> Clock). Format<br />
thus allows you to activate any sampling frequency quickly and easily.<br />
21.4 Repairing Disk Permissions<br />
Repairing permission can solve problems with the installation process - plus many others. To<br />
do this, launch Disk Utility located in Utilities. Select your system drive in the drive/volume list<br />
to the left. The First Aid tab to the right now allows you to check and repair disk permissions.<br />
21.5 PCI card and PCI slot compatibility<br />
Unfortunately not every <strong>RME</strong> card will work in every PCI slot of an Apple computer. To our<br />
knowledge, the current Hammerfall <strong>DSP</strong> systems can be used in any PCI slot of all G4 and G5<br />
models. In case additional PCI cards of any manufacturer are used, it might happen that the<br />
<strong>RME</strong> card is no longer found by the system. Swapping cards between slots can be helpful in<br />
this case.<br />
21.6 Various Information<br />
The driver requires 10.2.8 or higher. Older versions of OS X are not and will not be supported.<br />
Via ><strong>System</strong> Preferences/ Audio-MIDI Setup< the hardware can be configured for the system<br />
wide usage. Programs that don't support card or channel selection will use the device selected<br />
as Standard-Input and Standard-Output. (Soundstudio, Mplayer, Amplitube etc.).<br />
In the lower part of the window, the audio hardware's capabilities are shown and can be<br />
changed in some cases. On the record side no changes are possible. Programs that don't support<br />
channel selection will always use channels 1/2, the first stereo pair. To access other inputs<br />
use the following workaround with TotalMix: route the desired input signal to output channels<br />
1/2. Hold the Ctrl key down and click on the labels AN1 and AN2 in the third row. Their labels<br />
turn red, the internal loop mode is active. Result: the desired input signal is now available at<br />
input channel 1/2, without further delay/latency.<br />
Since OS X 10.3 playback can be configured freely and to any of the available playback channels.<br />
This is done via Speaker Setup. Even multichannel playback (Surround, DVD Player)<br />
can be set up easily.<br />
User's Guide H<strong>DSP</strong> <strong>System</strong> H<strong>DSP</strong> <strong>9632</strong> © <strong>RME</strong> 39
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