Manual

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ow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
DACADC
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.