Operational
Overview
AES16 User Manual
43
Physical Inputs
Starting from the digital inputs in the upper
right portion of the diagram, each AES-3
input signal is routed through a transformer
for isolation before arriving at an AES-3
receiver. The receiver extracts a word clock,
using a low jitter phase-locked loop, and
signal data that is passed to the Input Bus of
digital mixer.
On digital inputs 5 – 8 of an AES16-SRC the
signal passes through a sample rate converter
before merging with the Input Bus. This
sample rate can be enabled or disabled under
user control in the Lynx Mixer.
The LStream header on the AES16 is an
expansion port that provides an additional 16
inputs from a Lynx LStream device, such as
the LS-ADAT that offers 16 channels of
ADAT lightpipe. The signals from the
LStream header are routed through the
LStream receiver, which feeds the Input Bus.
Digital Mixer Inputs
The digital mixer has 16 input blocks that
receive data from the Input Bus and drive the
16 channels of the record bus. Each of these
blocks has an input selector that allows
selection any signal on the Input Bus. This
selector allows flexible patching of any AES16
physical input signal to any of the 16 Record
Bus channels. After the selector, the signal
passes through a mute switch and then
through the dither block, which offers three
popular dither algorithms and bit-depth
control. The output of the dither block is
measured for peak level meters and feeds one
of the Record Bus channels.
Software control of the digital mixer’s input
blocks is provided in the Record/Play page of
the Lynx Mixer application. The input selector
corresponds to the Input Source select
buttons (above the faders for each record
channel). Mute and dither controls are also
provided for each channel on this page.
Record Bus, Play Bus, and Devices
The 16 channels of the Record Bus are
derived from the outputs of the mixer input
blocks. These signals are routed to the host
computer via the PCI bus to the AES16
driver and also feed the output section of the
digital mixer to provide zero latency record
monitoring.
The AES driver installed on the host
computer assigns the 16 channels from the
Record Bus to eight stereo record devices as
follows:
Record Bus Channel 1 feeds the left channel
of Record Device 1
Record Bus Channel 2 feeds the right channel
Record Device 1
Record Bus Channel 3 feeds the left channel
Record Device 2
Record Bus Channel 4 feeds the right channel
Record Device 2
(etc)
(etc)
Record Bus Channel 16 feeds the right
channel Record Device 8
<NOTE: In ASIO apps…. add note here>
