Connecting Ada-8Xrs To Pro Tools - Prism Sound ADA-8XR Module Reference

Prism Sound ADA-8XR Multi-channel A/D D/A Converter Module Reference - Revision 1.01
However, when using a mixture of ADA-8XRs and Digidesign 888|24 interfaces, the situation
becomes slightly more complicated since you need to provide Superclock to the chain of
888|24s. Refer to one of the sections below, depending on whether an 888|24 or an
ADA-8XR is the Master interface. In general, it is usually better for an 888|24 to be the
master, since ADA-8XRs are more tolerant of clock quality in the slave state than are
888|24s.

6.10.1 Connecting ADA-8XRs to Pro Tools

The figure below shows how to connect ADA-8XRs to Pro Tools when NO OTHER
INTERFACE TYPES are in use. If other interfaces are to be used, see the following sections.
The Master interface is connected to the first Pro Tools card (or to the 'A' leg of a 'Y' cable
thereon). The USD is optional, depending on synchronization requirements.
All the ADA-8XRs should be switched on (and loaded with the appropriate Factory Default
Store, if not previously loaded) prior to starting the Pro Tools system. For the Master
ADA-8XR, load 'ProT:MASTER', or 'ProT:Ext MASTER' if the USD is in use. For Slave
ADA-8XRs, load 'ProT:SLAVE'.
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