Prism Sound Orpheus Operation Manual page 43

Prism Sound Orpheus Operation Manual Revision 1.05
allows Orpheus to operate as an eight channel analogue-to-ADAT and ADAT-to-analogue converter,
as described in the Stand-alone operation section.
NOTE: Changing the ADAT mode causes changes in the number of input and output channels
reported to the host computer by Orpheus. It is therefore advisable to close your DAW
application before changing the ADAT mode, and to restart it again afterwards, in order to
ensure reliable operation.
Global Settings
The Global Settings panel contains a small number of controls which apply to all units in a multi-unit
system.
Most important is the Sample Rate control. All units in a multi-unit system must operate at a
common rate. For further information about sample rates, see the Synchronization section.
NOTE: It is not possible to change the sample rate in a Windows system whilst any of
Orpheus' ports are in use in WDM mode. In this case it is necessary to disconnect the ports
from the application before changing the sample rate.
The FP Meters control allows I/O switching of front panel meters across multiple boxes as described
above.
In Windows systems, the audio delay through the input and output buffers can be controlled with the
Buffer Time and Latency controls. The Buffer Time control sets the duration of a buffer, and the
Latency control sets the overall path delay by applying a number of such buffers to the audio path. In
general, it is better to keep the Latency in general, and the Buffer Time in particular, quite long. This
reduces the risk of audio glitches, as described in the Stability and latency section. Orpheus'
low-latency on-board foldback mixing facility reduces the need for the Latency controls to be short. In
Mac systems, latency control is handled by OS X.
Load, Save and Help buttons
The green Help button ('?') opens the online version of this manual in a browser window.
The red Save and the orange Load buttons save and load Orpheus settings to and from disk. Note
that only settings of the currently-selected unit are affected, so it is necessary to save and load
settings of each unit individually in multi-unit systems.
© 2008 Prism Media Products Ltd 1.37