Lynx Studio LT-TB Thunderbolt - Manual (Page 40)

40
8 Using the LT-TB
With the LT-TB correctly installed in your computer, you can begin to use the Aurora with
most popular third-party audio applications. In this section we will explore setting up the
Aurora-TB system for different contexts of use.
8.1 Configuring Multiple Units
Up to six Aurora-TB and/or Hilo/TB interfaces can be daisy chained to a single Thunderbolt
port. Each unit will be addressable independently in the Lynx Mixer, and the combined I/O
can be used by a DAW application.
Connecting multiple units is done in three stages:
8.1.1 Connect the cables
With the computer OFF, Thunderbolt and word clock cables can be connected.
You will need one Thunderbolt patch cable for each Lynx LT-TB Interface in the system.
Connect one cable from the computer’s Thunderbolt port to either port on the first Aurora.
Then daisy chain one at a time, from the open Thunderbolt port on unit 1, to either port on
unit 2, out from unit 2 to unit 3, etc. It doesn’t matter which port “receives” and which port
“sends”.
Next, connect word clock cables to each unit. If Aurora #1 is going to be the clock master,
connect a word clock cable from Aurora #1 Word Clock Out, to Aurora #2 Word Clock In,
then Aurora #2 Word Clock Out to Aurora #3 Word Clock In. etc.
If clock distribution is utilized, a single word clock cable will go from each Aurora’s “Word
Clock In” port to an output on the clock distributor. The Aurora is self terminating, so there
is no need for hardware termination.
Make sure that the word clock cables are 75 Ohm, and as close to the desired length as
possible to avoid clock signal phase issues.
8.1.2 Setting device order
Modern operating systems have a tendency to change device order somewhat randomly. If
there are three devices, ordered 1, 2 and 3, after a reboot the order may have changed to 2, 3
and 1. This can wreak havoc on project templates, signal routing and workflow. Since we can
create 6 unit daisy chains, it was imperative to the LT-TB design that we devise a solution to
this quandary.
On first boot, when multiple daisy chained units are connected, the driver will automatically
assign each interface a numerical ID based on its cable position. For most users there will not
be a need to change this. The numerical ID is actually stored in the hardware, so if a unit is
moved from one system to another, its numerical ID will remain intact.