Uad bandwidth allocation example – Universal Audio UAD SYSTEM ver.6.3.2 User Manual
Page 67
UAD System Manual
- 67 -
Chapter 6: UAD Meter & Control Panel
It is important to note that all devices on the FireWire bus share the available
data bandwidth of the bus, including hard drives and audio interfaces as well
as UAD-2 Satellite and Apollo. Therefore all of the bandwidth cannot be al-
located for UAD use if FireWire hard drives and/or audio interfaces are on
the same bus. See
“FireWire Bandwidth” on page 109
mation.
To determine the proper value for the UAD Bandwidth Allocation:
1.
Connect and power up all the FireWire devices (host computer, audio in-
terfaces, hard drives, UAD-2 Satellite) on the FireWire bus.
2.
If running an audio interface on the FireWire bus, ensure the audio inter-
face drivers are installed and configured correctly (specifically, all the au-
dio inputs and outputs that will be used should be enabled).
3.
Run the UAD host (DAW) software but DO NOT run any UAD plug-ins, at
the HIGHEST SAMPLE RATE that will be used in the session (the sample rate
may be reduced after UAD Bandwidth Allocation is set).
4.
View
in the
) when UAD plug-ins are NOT running. The
value indicated in orange is the percentage of FireWire bandwidth that is
used by audio interface I/O streams.
5.
Subtract the
percentage from 100% and enter the
difference as the UAD Bandwidth Allocation.
6.
If you are using FireWire hard drives for audio session data on the same
bus, the UAD Bandwidth Allocation will need to be reduced to accommo-
date the FireWire hard drive usage.
UAD Bandwidth
Allocation
Example
If all the FireWire devices on the bus except UAD-2 Satellite use 20% of the
available FireWire bandwidth (from steps 1 through 4 above), enter 80% as
the UAD Bandwidth Allocation (100% – 20% = 80%).
Tip:
If FireWire performance issues occur, leaving a bit of unused FireWire
bandwidth (headroom), so the total usage for all devices is less than 100%.
To leave 5% of the bandwidth available for headroom in the example above,
you’d enter 75% for UAD Bandwidth Allocation (20% bandwidth without
UAD-2 Satellite + 75% for UAD-2 Satellite = 95% total FireWire bandwidth).
This is especially applicable if using FireWire hard drives on the same bus for
audio session data.