Instruction Manual

UAD System Manual - 46 - Chapter 5: Using Multiple UAD Devices
Windows The PCI specification provides for up to 25W per device, however some host
systems don't provide this much power. When designing a computer DAW
system, a common rule of thumb is to provide an extra 50%–100% of head-
room over the estimated maximum total power draw of all components in the
system.
Note: Don’t skimp on the power supply unit. When building a custom sys-
tem, a high quality sufficiently-rated PSU is critical for system stability.
IRQ Conflicts Under rare conditions running multiple UAD cards may cause an IRQ conflict
which can cause system instability or freezes. If this occurs, try moving the
UAD card(s) to different slots and/or contacting UA for technical assistance.
Multidevice DSP Loading
DSP loading in a multidevice system behaves the same as in a single UAD-2
DUO, QUAD, or OCTO system (these devices have multiple DSPs), and is
managed automatically by the UAD software. See “DSP Loading Information”
on page 79 for details.
Device Info Display
UAD DSP and mem-
ory resources used
for each installed
device, and the abil-
ity to enable/dis-
able individual de-
vices, is displayed
in the System Infor-
mation window.
See “System Information Panel” on page 52 for complete details.
Disabling Devices
Individual UAD devices can be disabled using the Device Enabled
function (see page 54). This can be useful, for example, if creating a
session on a system with multiple devices that will be transferred to a
system with fewer devices.