Korg Soundlink DRS OASYS PCI User Manual page 138

Wave Device Settings (Windows)
OK
Pressing the OK button saves all changes, and quits the Korg OASYS PCI Wave
Device Settings program.
Custom Synchronization
NOTE: To view the window at full resolution, zoom in to 200%.
As discussed under "Synchronization," on page 130, each of the OASYS PCI's
stereo pairs of inputs and outputs appear as an independent wave device. When
the Auto Sync button is turned on, all of the wave devices will be grouped
together so that they operate as a single, synchronized multichannel I/O device.
Auto Sync is an easy-to-use, fool-proof mode optimized for working with
multichannel audio programs. However, you can also use multiple audio
programs at once, each connected to different sets of stereo I/O pairs. In this case,
you should use the Custom Synchronization settings instead.
The Custom Synchronization settings allow you to manually create one group of
stereo pairs which start to play back and/or record at the same time (for use with a
multichannel audio program), while all of the other inputs and outputs operate
independently.
Note that if you use multiple "independent" wave devices with a single
multichannel audio program, you may sometimes notice delays between the
different stereo pairs.
NOTE: When Auto Sync is enabled in the Wave Device Settings window, any
settings in the Custom Synchronization window will be ignored.
Sync Rec
Each of the input pairs has its own Sync Rec button. If one or more of these is
turned on, the OASYS PCI will not start recording or playback until all of the
devices set to Sync Rec have received the "start record" command from the digital
audio program.
When recording from multiple input pairs simultaneously, make sure that each
active input's Sync Rec button is turned on, and that all of the inactive inputs' Sync
Rec buttons are turned off.
134
Reference
OASYS PCI