Lectrosonics ASPEN - Manual (Page 2)

Hardware Architecture
The variety of models in this series are created by com-
bining “building block” circuit board assemblies:
• 8 input, 12 output mixer board
• 16 channel input only board
• 8 channel input only board
• Conference interface board
A single board can be enclosed by itself in a stand-alone
1RU chassis, or combined with another board in a 2RU
chassis to create a variety of models. The 2RU models
include an LCD with comprehensive access to all system
settings and activity.
812
1612
Mixer and input only units include the following models:
• SPN812 8 input, 12 output mixer
• SPN1612 16 input, 12 output mixer
• SPN1624 16 input, 24 output mixer
• SPN2412 24 input, 12 output mixer
• SPN16i 16 channel input only
• SPN32i 32 channel input only
• SPNConference Conference interface
• SPNTrio
8 input, 12 output mixer
with Conference interface
Input only units deliver outputs to the digital bus, so they
are always used with a mixer or conference board to
provide physical audio outputs for the sound system.
The SPNConference model is used with a mixer to pro-
vide mic/line audio inputs and outputs.
When multiple units are stacked, the Master unit will
automatically be detected and configured and the other
units will be configured as Slaves.
All data and audio from the Slave units in the system is
gathered in the Master, so a single connection between
a computer and the Master allows software access to all
units in the stack.
The slight throughput delay of inputs from slaves and the
master in the ASPEN bus is automatically synchronized
to maintain absolute signal phase at all outputs.
At the core of each ASPEN board is a powerful commu-
nications and control structure.
A latest generation SHARC
® processor* performs the
millions of calculations required to implement signal
processing, auto mixing, echo cancellation and noise
reduction.
An FPGA with a gigabit transceiver interacts with the
front panel controls and coordinates the data flow in and
out of the ASPEN bus.
The microcontroller interfaces with the I/O ports, the front
panel LCD, the real time clock and oversees the tem-
perature regulation.
FPGA
w/
Gigabit
Transceiver
DAC ADC
Rotary Encoder w/
Center Pushbutton
LCD Display
USB Port RS-232 Port Ethernet Port
Programmable
I/O Port
Fan Controller
Up/Down/Left/Right
Pushbuttons
Temperature
Sensor
Dual RJ-45
ASPEN
Port Connector
Programmable
Audio Amplifiers
Audio Drivers
Fan
Real-time Clock
Micro
Controller
Floating Point
DSP
*SHARC is a registered trademark of Analog Devices, Inc.