User`s manual

Page 4
2.2 Using Digital Input Audio for Reference Cancellation
The S/PDIF and TOSLINK inputs always receive two channels of audio, LEFT
channel and RIGHT channel. For reference cancellation, these two channels
may contain a stereo primary signal, a mono primary and a reference signal, or
only a mono primary.
This means that if you want to cancel more than one reference from a mono
digital signal, or if you want to apply reference cancellation to a stereo digital
signal, you will need to use a combination of digital and analog inputs. For
example:
 To cancel one reference from a stereo S/PDIF primary, select S/PDIF on
the front panel INPUT SELECT, and choose STEREO and 2CH in the
Filter Controls. Use the S/PDIF input connector to feed the primary
channels into the unit. Use the LREF ANALOG input to feed the reference
signal into the unit.
 To cancel three references from a mono TOSLINK primary, select
TOSLINK on the front panel INPUT SELECT, and choose MONO and
4CH in the FILTER CONTROLS. Use the TOSLINK input connector to
feed the primary and one of the references into the unit. Use the LREF
and RREF ANALOG inputs to feed the other two references into the unit.
 To cancel a single reference from a mono S/PDIF primary, put the primary
signal on the left S/PDIF channel, and choose MONO in the FILTER
CONTROLS. You may put the reference signal on either the S/PDIF right
channel OR the ANALOG LREF input, setting the FILTER CONTROLS to
the 2CH mode, where the red LED is lit on the reference channel you are
using.
See section 3.1.4 for more information on how to define your use of primary and
reference channels.
2.3 Other Connectors
The POWER connector should be connected to +12V DC, 2A. The USB 2.0
connector is used to connect the unit to the PC for use with the MicroDAC 5
configuration software.
Two external switch connectors are available for remotely clearing and freezing
the adaptive filters. See section 3.2 for more information on these controls.