User`s guide

PC setup
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About the REAC Driver Control Panel
The following section describes the controls in the REAC Driver Control Panel.
Preferred Sync setting
Locked
This option is selected by default. When this mode is selected, REAC is the clock master for both SONAR
and the monitoring device. Use this option when there is a physical clock connection between the monitoring
device and the optical, COAXIAL, AES/EBU or Word Clock output on the REAC hardware system. When
Locked is selected, the Freewheel Options button is unavailable. This is the most desired sync mode
setting for this recording system.
Alternate sync settings
There may be situations when it is not possible to have a dedicated clock connection between the REAC
hardware and the monitoring device. The following are alternative clock settings in the REAC Driver Control
Panel.
Please be advised that any of the settings below will either increase latency or create gaps, pops, clicks or
other noise when monitoring through approved interfaced. The actual recordings will not be affected.
Freewheel (Auto-resync)
When this mode is selected, REAC is the clock master for
SONAR only. Use this option only if it is not possible to have
a physical clock connection between the monitoring device
and the optical, COAXIAL, AES/EBU or Word Clock output
on the REAC hardware system. Using this option runs the
risk of audio dropouts when monitoring. Selecting this
option enables the Freewheel Options button.
Freewheel Options:
• Fixed. This option is selected by default when in Freewheel (Auto-resync) mode. Selecting Fixed
means the latency between an audio event (either live monitoring or playback) remains constant despite
the Output Buffers setting. However, selecting this option may increase the risk of monitoring and
playback gapping. The Fixed option increases the buffer size and provides better playback.
• Based on Buffers. This setting compensates for clocks that are faster and/or have higher jitter than the
REAC clock by increasing the Record Buffer. While audio monitoring may be more consistent, the latency
will increase.
Output Buffers
• Indicates the number of output buffers being used by the REAC driver itself when in Freewheel mode.
Decreasing the value will increase the frequency of gaps in monitoring or playback. Increasing the value
will decrease the frequency of gapping, but may increase latency based on the Fixed or Based on
Buffers settings.