Lynx Studio LT-USB - Manual (Page 11)

Page 11 of 45
9. Reinstall the Aurora lid using the eight screws that had been removed in step 1. Do not
over tighten the small screw near the center of the front faceplate as it is easily damaged.
10. Plug in and power up the Aurora using the front panel standby switch. You can see the
LT-USB from the slits in the Aurora top cover. If the green LED on the LT-USB lights
up, the installation was successful. If the LED does not light, unplug the Aurora and re-
mount the LT-USB, making sure that it is securely attached. Then plug in and power up
again. If the green LED still does not light, please contact Lynx Customer Support.
5.1 Clock Settings and Connections
Please see Section 2.6 Clock Settings and Connections, of the Aurora User Manual for
information about correct clocking of the Aurora within a digital audio system. When used
with an LT-USB, the SYNC SOURCE can only be from changed from the front panel of the
Aurora while the USB cable is disconnected. After the SYNC SOURCE is selected and
Synchrolock has achieved full lock, reconnect the USB cable. When the USB connection is
active, the Aurora will enter a lock-out mode, where some parameters such as SYNC
SOURCE/SAMPLE RATE cannot be altered from either the front panel or Remote Control
software.
5.1.1 Using the Internal Clock
We recommend using Internal as the SYNC SOURCE for the best clock performance.
In this state, the Aurora can respond to sample rate changes from audio software, but not all
applications will send these rate change requests.
In all compatible versions of Windows, ASIO applications will generally request sample rate
changes to follow the project sample rate, or the rate of the audio being played.
In Windows XP, applications using the WDM/DirectSound or MME/Wave Out driver
models will also typically request a sample rate change of the driver to match the project or
audio file rate.
In Windows Vista and Windows 7, WDM/DirectSound and WASAPI applications do NOT
typically request sample rate changes. Instead they rely upon Sample Rate conversion built
into the operating system to convert the play rate to the rate of the audio hardware. If one
wishes to avoid the effects of this rate conversion, the sample rate can be changed globally
from the Sound section of Windows control panel (Sound > Properties > Advanced). After
changing the sample rate, the play application often will need to be restarted.
In OS X, some Core Audio applications will initiate a change of sample rate to match the
project or audio file being played, and others will not. For the most part, professional audio
recording software does request sample rate changes, and consumer or media playback
software does not. Examples of the former would be Logic, ProTools, Cubase, Digital
Performer, etc. Examples of the latter would be iTunes, DVD playback software or
Quicktime.