Lynx Studio LT-HD - Manual (Page 11)

Page 8
7 External Connections
The physical connection between the Aurora/LT-HD and Digidesign Core, Process or Accel
cards is very straightforward. Please note: we suggest only using DigiLink cables of 12’ or
shorter for optimal performance.
The LT-HD card has two connectors labeled as PRIMARY and EXPANSION, similar to the
Digidesign HD Interfaces. The port that an interface is connected to will determine how it will be
accessed within the ProTools environment. See Section 10 for information about software setup
considerations.
Connecting a single LT-HD equipped Aurora to a single ProTools|HD Core Card is simply a
matter of connecting a DigiLink cable from the LT-HD PRIMARY port to the ProTools Core
Card DigiLink port. If two Auroras will be connected to the same Core or Accel/Process card,
the first should be connected as described above, and an additional DigiLink cable should be
used to connect from the EXPANSION port on the first interface to the PRIMARY port on the
second. It is not possible to connect more than two Aurora 16s or two Aurora 8s to a single
ProTools|HD Core or Accel/Process card, as there is a 32-channel limit to each card.
There are three possible states for integrating an Aurora into a ProTools|HD system:
• Aurora 16 in 32-channel mode
• Aurora 16 in 16-channel mode
• Aurora 8
In 32-channel mode, all analog and digital I/O channels of the Aurora 16 are available
simultaneously. Since each DigiLink port is capable of 32-channels maximum, in 32-channel
mode it would not be possible to connect a second interface to the LT-HD expansion port. The
Channel Mode for the Aurora can be toggled from the front panel by pressing the TO ANALOG
OUT button for ½ second. The correct mode should be set prior to launching the ProTools
software. In 32-channel mode, the Aurora 16 will appear as two Digidesign 192 I/O interfaces.
Each “instance” will present 8 channels of Analog I/O and 8 channels of Digital I/O - both of
which can be used simultaneously. Combined, this allows 32-channels of input and output to be
available (16 analog/ 16 digital).
In 16-channel mode, each Aurora 16 will appear as a single 192 I/O interface. In this mode, 16
channels of Analog I/O and 8 channels of Digital I/O will be presented to the ProTools software.
Of these 24 possible I/O channels, only 16 can be used at one time. For instance, one could use 8