Lectrosonics SPNTrio Manual

Rio Rancho, NM, USA
www.lectrosonics.com
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SPNTrio
Digital Conference Interface
INSTALLATION and STARTUP GUIDE
Software and Hardware Installation and Setup
IMPORTANT
See page 15 for
Minimum Setup Requirements
Visit the ASPEN Support web site:
www.lectrosonics.com/aspensupport/
Also link from the home page: www.lectrosonics.com

SPN Trio
LECTROSONICS, INC.
2
This symbol, wherever it appears, alerts
you to the presence of uninsulated danger-
ous voltage inside the enclosure -- voltage
that may be sufficient to constitute a risk of
shock.
This symbol, wherever it appears, alerts
you to important operating and mainte-
nance instructions in the accompanying
literature. Please read the manual.
When using your telephone equipment, basic safety
precautions should always be followed to reduce the
risk of fire, electrick shock and injury to persons, includ-
ing the following:
1) Read these instructions.
2) Keep these instructions.
3) Heed all warnings.
4) Follow all instructions.
5) Do not use this apparatus near water.
6) Clean only with a dry cloth.
7) Do not block any ventilation openings. Install in ac-
cordance with the manufacturer’s instructions.
8) Do not install near any heat sources such as radia-
tors, heat registers, stoves, or other apparatus
(including amplifiers) that produce heat.
9) Do not defeat the safety purpose of the polarized
or grounding-type plug. A polarized plug has two
blades with one wider than the other. A grounding
type plug has two blades and third grounding prong.
The wider blade or the third prong are provided
for your safety. If the provided plug does not fit into
your outlet, consult an electrician for replacement of
the obsolete outlet.
10) Protect the power cord from being walked on or
pinched particularly at plugs, convenience recepta-
cles, and the point where they exit from the appara-
tus.
11) Only use attachments/accessories specified by
the manufacturer.
12) Use only with the cart, stand,
tripod, bracket, or table specified by
the manufacturer, or sold with the
apparatus. When a cart is used,
use caution when moving the cart/
apparatus combination to avoid
injury from tip-over.
13) Unplug this apparatus during lightning storms or
when unused for long periods of time.
Important Safety Instructions
14) Refer all servicing to qualified service personnel.
Servicing is required when the apparatus has been
damaged in any way, such as power-supply cord or
plug is damaged, liquid has been spilled or objects
have fallen into the apparatus, the apparatus has
been exposed to rain or moisture, does not operate
normally, or has been dropped.
15) WARNING -- TO REDUCE THE RISK OF FIRE
OR ELECTRIC SHOCK, DO NOT EXPOSE THIS
APPARATUS TO RAIN OR MOISTURE.
16) The AC mains plug, or appliance coupler shall
be readily available to the operator as a means of
power disconnection, if applicable.
17) Unit shall be connected to a MAINS socket outlet
with a protective earthing connection.
18) Do not use this product near water for example,
near a bathtub, washbowl, kitchen sink or laundry
tub, in a wet basement or near a swimming pool.
19) Avoid using a telephone (other than a cordless
type) during an electrical storm. There may be a
remote risk of electric shock from lightning.
20) Do not use the telephone to report a gas leak in
the vicinity of the leak.
21) Use only the power cord and batteries indicated
in this manual. Do not dispose of batteries in a fire.
They may explode. Check with local codes for pos-
sible special disposal instructions.
22) “CAUTION: To reduce the risk of fire, use only No.
26 AWG or larger (e.g., 24 AWG) UL Listed or CSA
Certified Telecommunication Line Cord”
SAVE THESE INSTRUCTIONS
Inspection of the Unit
Compare the packing list enclosed with the unit with the
original order. Inspect all items for damage. Immediately
call 1-800-821-1121 to report any items that are miss-
ing or damaged. The sooner you notify us, the sooner
you will get any needed replacement items shipped to
your location.

Installation and Startup Guide
Rio Rancho, NM 3
Table of Contents
Important Safety Instructions................................................................................................................................................................2
Inspection of the Unit.............................................................................................................................................................................2
Introduction.............................................................................................................................................................................................4
Front Panel..............................................................................................................................................................................................5
Rear Panel ...............................................................................................................................................................................................6
Hardware Installation .............................................................................................................................................................................7
Installing the chassis into a rack ...........................................................................................................................................................7
Cables ..................................................................................................................................................................................................7
Audio Connectors ................................................................................................................................................................................7
Audio Inputs – Unbalanced...................................................................................................................................................................7
Audio Outputs .......................................................................................................................................................................................8
Programmable Inputs............................................................................................................................................................................8
Programmable Outputs .........................................................................................................................................................................8
Power Amp Outputs ..............................................................................................................................................................................8
ASPEN RS-232 Port .............................................................................................................................................................................9
Cabling Of Stacked Units ......................................................................................................................................................................9
Creating an ASPEN Installation Disk..................................................................................................................................................10
USB Driver Installation.........................................................................................................................................................................11
Software Installation ............................................................................................................................................................................12
Software and
Firmware Updates .........................................................................................................................................................................13
Firmware Update Procedure................................................................................................................................................................13
Connecting to a Unit ............................................................................................................................................................................14
Navigating the Control Panel...............................................................................................................................................................14
Minimum Setup Requirements............................................................................................................................................................15
Saving Settings.....................................................................................................................................................................................19
Additional Adjustments .......................................................................................................................................................................19
Stacking Multiple Units........................................................................................................................................................................19
Refer to the Help Files..........................................................................................................................................................................19
Using the LCD.......................................................................................................................................................................................20
Browser Interface .................................................................................................................................................................................24
Multi-site Bridging Setup .....................................................................................................................................................................25
AEC Reference Mix ............................................................................................................................................................................25
AEC Signal Mix...................................................................................................................................................................................26
Enable the AEC and Define the Inputs ...............................................................................................................................................26
SEND Mixes........................................................................................................................................................................................27
............................................................................................................................................................................................................27
LOCAL Mixes......................................................................................................................................................................................28
The Finished Setup.............................................................................................................................................................................29
FCC Part 68 Compliance......................................................................................................................................................................31
FCC Part 15 Compliance......................................................................................................................................................................31
Service and Repair ...............................................................................................................................................................................33
Returning Units for Repair ..................................................................................................................................................................33

SPN Trio
LECTROSONICS, INC.
4
Introduction
The SPNTrio combines the circuit board assemblies
from the SPN812 and SPNConference in a 2RU chas-
sis to provide a complete, stand-alone component for
telepresence and audio conferencing systems. The unit
can also be used with additional ASPEN processors
to add additional inputs and outputs. Setup and adjust-
ments can be made using the control panel software or
the front panel LCD interface. Inputs and outputs ap-
pearing on the LCD have been consolidated into logical
groups to simplify navigation.
The far end audio signals in a conference participate in
the automatic mixing algorithm in same manner as local
microphones connected to the processor. Three sites
connected via two codecs and a telephone line can be
bridged into a single conference with the local site.
The ASPEN S-AEC acoustic echo canceller (US Pat-
ent Pending) was developed to address the need for
a single acoustic echo canceller that could handle the
challenges of multi-site bridging and an unlimited num-
ber of microphones. The AEC converges very quickly,
then continues to increase the cancellation depth at ev-
ery opportunity as a conference continues. Cancellation
depth will increase even with brief signal peaks from
the far end, and convergence will never be lost with any
type of signal or in double talk situations.
Signals from the far ends of the conference are routed
to the local sound system as well as serving as the
reference signal for the AEC. Audio from the local mi-
crophones (which includes far end audio from the local
loudspeakers) is routed to the AEC via a second final
mix. Far end audio present in the microphone signal mix
is cancelled, and the output of the AEC is routed back
to the far ends through the matrix.
Visit the ASPEN Support web site:
www.gnarlywireless.com/AspenSupport/
Also link from the home page: www.lectrosonics.com
The AEC in combination with the patented gain pro-
portional mixing algorithm* provides outstanding audio
quality without echo heard at the far ends.
The noise reduction filter used in ASPEN processors is
a proprietary process which is very effective in deal-
ing with noisy connections in the far end Codec and
telephone line signals. Using dynamic, third octave
filters, voice is emphasized and noise is suppressed to
improve intelligibility during a conversation.
An ethernet port is provided for setup and control via
standard network connections, and an RS-232 port is
provided for use with remote control systems. The de-
sign allows simultaneous, multi-point third party control.
A two channel power amplifier is included for loud-
speakers in the local sound system. The power amplifier
is driven by final mix outputs from the matrix and has a
full set of signal processing, including parametric EQ,
compressor and limiter. Class-D amplification is imple-
mented with a late generation component that provides
exceptional efficiency, low heat, excellent audio perfor-
mance and cannot be damaged by wiring errors.

Installation and Startup Guide
Rio Rancho, NM 5
Headphone Monitor
Used to monitor individual final mix buses as selected
on the LCD. Standard 1/4 inch jack and level control.
Drives both channels of stereo headphones.
LCD
Allows setup and adjustment of most operating param-
eters and for minor adjustments without a computer
interface.
Navigation/Select Control
Used to navigate menus and make value selections and
settings on the LCD.
USB Port
Standard USB connector for the setup and control of
an SPNTrio from a Windows®XP, Vista or 7 computer
system* with USB interface.
Status LEDs
Comm LED - blinks to indicate USB, RS-232 and ether-
net communication
Alert LED - blinks to indicate fault or error, glows white
during firmware updates
Power LED - glows to indicate power ON
Front Panel
The SPNTrio includes a front panel LCD and rotary
style navigation control for adjustment without the need
for a computer interface. The headphone output is used
to monitor each final mix for diagnostics and system
checkout.
POWER Switch
USB Port
Comm LED
Headphone Monitor
Navigation/Select
Control
LCD
Alert LED
Power LED
Blue LEDs on the right side of the front panel indicate
power status and communications through USB, serial
and ethernet ports. The center white LED blinks to indi-
cate an error, and glows during firmware updates.
*Windows is a registered trademark of Microsoft Corp.

SPN Trio
LECTROSONICS, INC.
6
Rear Panel
Power Inlet
The switching power supply will operate with line volt-
ages between 100 and 240 VAC. The inlet socket is a
standard 3-pin C14 type that accepts any cordset with a
C13 connector.
Cooling Fan
The microprocessor monitors the internal temperature
of the processor and controls the variable speed fan as
needed. Operating temperature is very well regulated.
RS-232 and Ethernet Ports
Each host assembly provides RS-232 and Ethernet
ports for communication with the microprocessor. The
ports can be utilized simultaneously for monitoring,
setup and control.
ASPEN Ports
This gigabit bus transports audio and data from one
board to the next through CAT-6 cabling and RJ-45 con-
nectors. Processors are normally installed with the Mas-
ter unit on top and Slave units below it. The cabling is
then connected from the uppermost jack on one board
to the lowermost jack on the unit just above it. See page
9 for more information.
Balanced Mic/Line Inputs
Every mic/line input is a balanced, differential type with
adjustable gain from -10 to +60 dB. Connectors are a
standard 5-pin Phoenix depluggable type with adjacent
channels sharing a common ground.
Balanced Outputs
All outputs are a balanced, differential type. Channels 1
through 8 on each board are nominal line level outputs
with gain adjustment from -60 to +20 dB. Channels 9
through 12 on each board are also line level outputs
with switchable attenuation of -20 and -40 dBu nominal
levels (mic level), with gain adjustment from OFF to +20
dB.
Programmable Input and Output Ports
Programmable inputs and outputs used to control
levels, settings, indicate the current state of a program-
mable input and control a variety of other parameters.
ASPEN Bus Data/Audio Ports
These RJ-45 jacks carry the audio signals and con-
trol data between each system board as well as units
stacked together.
Remote Control
These RJ-45 jacks provide interfaces for RCWTH4
remote control units. Each jack is assignable to CODEC
1 or 2, or to the telephone line.
Conferencing Inputs and Outputs (Codecs)
Analog audio input and output connectors for the Codec
ports.
Telephone Set/Line
RJ11 jacks for connecting a standard telephone line
and a single-line telephone set.
Power Amp Outputs
The amplifier is designed to run continuously (idle or
with a load) without heat buildup, making it ideal for
permanent installations where prolonged operation is
required.
100-240V
50/60Hz 50W
ASPEN PORTS
ETHERNET
RS-232
SPN Trio
OUTPUTS INPUTS
GND
+5V
PROG IN
PROG
OUT
GND
PROG IN +5V
PROG
OUT
Adaptive Proportional Gain Mixing
US Patent 5,414,776
S/N LABEL
DATECODE
CODEC
1
POWER AMP
OUTPUTS
LINE
OUTPUTS
CODEC
2
LINE
INPUTS
CODEC
1
CODEC
2
12
TELEPHONE
LINE
REMOTE
CONTROL
RC 2
RC 1
SET
Made in the USA Made In the USA
Cooling Fan
Outlet
Programmable Input
and Output Ports
Balanced Outputs Balanced Inputs
Power Inlet RS232
Serial Port
Data/Audio
Bus Ports
Line Inputs
(Codecs)
Telephone
Set/Line
Line Outputs
(Codecs)
Remote
Control
Ethernet
Port
Power Amp
Outputs

Installation and Startup Guide
Rio Rancho, NM 7
Audio Inputs – Unbalanced
Unbalanced audio sources include items such as
consumer VCR’s, DVD players, etc., which can be con-
nected with either two wire or three wire cables. The (+)
terminal of the source is connected to the (+) terminal
of the processor. The shield and (–) connections are
made as shown here.
Three wire cables should have the shield connected to
the (–) connector at the source end of the cable.
Processor
Unbalanced source to
ASPEN input – 3-wire cable
Source
Shield
Two wire cables should have a jumper between the
processor (–) input and ground.
Processor
Unbalanced source to
ASPEN input – 2-wire cable
Source
Shield
Audio Inputs – Balanced
Balanced audio sources connect to the processor in-
puts in a straight “pin to pin” configuration.
Processor
Balanced source to
ASPEN input
Source
Shield
Installing the chassis into a rack
Install the chassis so that the cooling fan vent is not
blocked. Mount with 4 rack screws using the appropri-
ate mounting holes. Use nylon washers to prevent
damage to the front panel’s finish when tightening the
mounting screws.
All ASPEN processors have internal switching power
supplies that can tolerate voltages ranging from 100
to 240 VAC. Use an approved power cord with an IEC
60320 C13 connector.
Cables
It is recommended to use lacing bars for cable strain
relief when mounting in a rack. Use only professional
audio cable with proper shielding – typically, two con-
ductor plus ground/shield.
Audio Connectors
The analog audio inputs and outputs are connected
through 5 pin de-pluggable connectors. Strip the insula-
tion back 1/8 to 3/16” but do not tin (apply solder to)
the leads. Insert the wire into a de-pluggable connec-
tor, leaving less than 1 mm of bare wire exposed, then
tighten the retaining screw.
Caution: Do not overtighten the screws.
5-pin depluggable
connector
Do not leave more than
1 mm of exposed wire
beyond the connector.
Do not apply
solder to leads
Retaining Screw
(Do not overtighten)
Note the labeling on the rear panel for the positive and
negative leads. Ground is shared between two connec-
tions (the center pin).
Note: ASPEN processors do not have a “pin 1
problem.” Inputs and outputs are true differential
connections.
Hardware Installation

SPN Trio
LECTROSONICS, INC.
8
Programmable Inputs
Programmable inputs are provided to enable external
control over a variety of parameters. Each input can
respond to a contact closure, a DC voltage source, or
the variable voltage output from a potentiometer. The
following illustrates common connections to the pro-
grammable input pins.
10K Linear Potentiometer
CCW CW
+5V
To Programmable Input Pin
Gnd
Contact Closure as Programmable Input
To Programmable Input Pin
Gnd
DC Voltage Source as Programmable Input
To Programmable Input Pin
0VDC (Off) to +5VDC (On)
Gnd
Potentiometer Connection for
Analog Control of Gain
Programmable
Inputs
Programmable
Outputs
Ground
+5VDC
Programmable Outputs
Programmable outputs are used for several purposes:
• indicatethecurrentstateofaprogrammableinput
• monitoractivityontelephoneorcodecinterfaces
• monitoractivepresetchanges
Each programmable output is the electrical equivalent
of a contact closure to ground. When a programmable
output is “active,” it conducts current to ground. When
the programmable output is “inactive,” no current flows
to ground. The maximum usable voltage for the pro-
grammable outputs is 40 V and they will safely conduct
up to 100 mA DC continuous.
Both LEDs and 5V relay coils can be powered by the
+5 V DC pins on the programmable input connector, as
long as the maximum combined current for all LEDS
and relay coils does not exceed 100 mA.
Audio Outputs
The line outputs are a balanced differential configura-
tion which can drive balanced or unbalanced inputs on
other audio equipment with the wiring shown here.
Balanced output to a balanced input is a straightforward
“pin to pin” configuration.
Destination
Output
Balanced output to
balanced destination
Shield
Balanced output to unbalanced input with a 3-wire
cable is connected with the cable shield added to the
(–) terminal on the destination input.
Destination
Output
Balanced output to unbalanced
destination – 3-wire cable
Shield
Balanced output to unbalanced input with a 2-wire cable
is connected with the output (–) connected to the cable
shield at the processor output.
Destination
Balanced output to unbalanced
destination – 2-wire cable
Output
Shield
Power Amp Outputs
Each output can drive a
variety of loads, including
loudspeakers, long cable
runs and headphones.
The BTL (bridge tied load)
configuration allows the
two channels to be wired
in parallel on a common
load to double the output
power.
+
-
+
-

Installation and Startup Guide
Rio Rancho, NM 9
380 Ohms
Programmable Output Pin
380 Ohms
Programmable Output Pin
1N4001
or equiv.
External
DC Voltage
Source
(<40VDC)
Relay Coil
Coil current <100mA
Programmable Output Pin
Relay is on when the programmable output is active
+5VDC
+5VDC
GND
LED is ON when the programmable output is active
GND
LED is OFF when the programmable output is active
Note: The diagram above shows an external DC source pow-
ering the relay coil. This is necessary whenever coil voltages
exceed 5 volts.
LED
380 TO
500 OHM
10K
LINEAR
POT
CW
CCW
IN 1
IN 3
ON
OFF
LOGIC OUTPUTS
GROUND
5VDC
LOGIC INPUTS
LOGIC
OUT 7
LOGIC IN 3
ANODE CATHODE
V
R
Anode
Cathode
CathodeAnode
ASPEN RS-232 Port
Here is the wiring diagram for the ASPEN RS-232 Port
for connecting to a PC.
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
DCD
RX
TX
DTR
GND
DSR
RTS
CTS
RI
TX
RX
GND
Host
Serial
Port
(PC)
ASPEN
RS-232
Port
Wiring Diagram
ASPEN Device to PC
DTE pin
functions
Female
connector
Male
connector
DCE pin
functions
Female
jack
Male jack
Cabling Of Stacked Units
In a stacked configuration, ASPEN processors must
be interconnected as shown here. Each Slave unit in
a stack gathers data and audio signals from the unit
below it, adds its own signals and passes the total on to
the unit above it. At the top of the stack, the Master unit
gathers all signals from below, adds its own and then
sends the total back down the bus to all Slave units
below it. In this manner, all Slave units have access to
all inputs on any unit in the stack.
Each circuit board has an upper and a lower CAT-5 con-
nector. Since there are two circuit boards in a 2RU unit,
the circuit boards are connected in the same manner as
if they were in separate chassis. The ASPEN bus is bi-
directional, handling data and audio signal forward and
back propagation through a single cable connection.
1RU SPN
Processor
configured as
Master
2RU SPN
Processor
configured as
intermediate
Slave
1RU SPN
Processor
configured
as lowermost
Slave
ASPEN PORT
The processors automatically configure themselves for
Master and Slave status as determined by the cabling.
If a unit is connected to another unit above it through
the upper connector, it is automatically configured as
a Slave. If there is no unit above it, then it becomes a
Master.

SPN Trio
LECTROSONICS, INC.
10
Creating an ASPEN
Installation Disk
The easiest way to install the control panel software and
perform firmware updates is using the Installation Disk.
If you do not have the disk supplied with the processor,
go to either of the following web sites and download the
ASPEN Installation Disk .iso file.
http://www.lectrosonics.com/aspensupport/
Link from the home page: www.lectrosonics.com
Save the file to your local drive in a familiar location.
Open a disk copier utility such as Roxio Classic and
select the operation to Burn from a Disk Image File.
NOTE: The .iso file cannot be simply copied to the
disk. The disk recording utility must run a process
that creates a disk from a stored image file.
The .iso file format is recognized by almost any disk
creation software.

Installation and Startup Guide
Rio Rancho, NM 11
USB Driver Installation
The ASPEN USB drivers are installed from the ASPEN
Installation Disk which comes with each device, by run-
ning the ASPEN Device Installer. Normally this is done
before connecting an ASPEN device to the PC for the
first time, but it can be done afterwards if necessary.
The driver installation only needs to be done once on
each PC that will be connected to an ASPEN unit.
If an ASPEN device is connected to a PC without prior
installation of the drivers from the ASPEN Installation
Disk, manual installation is possible for Windows XP
and Vista operating systems using the New Hardware
Found wizard. In the case of Windows 7, there is no
New Hardware Found wizard, so manual installation is
a bit more involved. In any of these cases it’s not really
necessary if you have the installation disk. Just cancel
the New Hardware Found wizard (if open) and run the
ASPEN Device Installer from the Installation Disk.
Installation with ASPEN Device Installer
Place the ASPEN Installation Disk into the CD-ROM
drive. If “AutoRun” is enabled on that drive then the
ASPEN Installation Disk utility will open.
Note: If AutoRun is not enabled then use Start->Run to
run “autoRun.exe” on the drive holding the ASPEN In-
stall Disk. For example, if the CD-ROM drive is drive E:
then run “E:\autoRun.exe” to open the ASPEN Software
CD utility.
Click on the appropriate driver for your system:
• InstallUSBDrivers(32-bit)
• InstallUSBDrivers(64-bit)
The ASPEN Device Installer opens.
Click Next to proceed.
The End User License Agreement is presented.
Accept, then click Next to proceed. The drivers are
installed from the CD.
When installation is complete, the Driver Name and
Status are displayed. Click Finish to close the Device
Installer.
Click Close to finish.You may now connect to the AS-
PEN device via USB.

SPN Trio
LECTROSONICS, INC.
12
Software Installation
NOTE: Uninstall previous version before installing
the software.
The example shown here illustrates the installation pro-
cedure using Windows XP. The screens that appear at
each step using another operating system will vary, but
the general steps are very similar.
Insert the disk into the drive and wait for the opening
screen to appear. Click on Install ASPEN Software to
launch the installer.
When the Welcome screen appears, click on Next.
The End User License Agreement screen appears.
Click on I Agree, then on Next to continue.
It is usually best to accept the default folder for the
installation. Click on Next to continue.
Click on Next to confirm the installation and continue.
When the installation is complete the final screen will
appear. Click on Close to finish the installation.

Installation and Startup Guide
Rio Rancho, NM 13
Firmware Update
Procedure
1) Install ASPEN software. See the previous page for
an example of the installation procedure.
2) Launch the software. After the panel opens, click on
File > Update. The Update Wizard screen will open
to confirm that the software is ready for a firmware
update, with instructions on connecting and config-
uring the processor.
3) On the processor, hold the recessed pushbutton
switch in with a pen or paper clip and turn on the
power to the processor. The unit will boot into the
Firmware Update... mode and the white Alert LED
on the processor front panel will glow.
Recessed pushbutton for firmware updates
4) Connect the processor to the computer with the
USB cable. When the USB connection is confirmed
(typically with a beep sound on the computer),
continue by following the on screen prompts in the
Update Wizard.
5) When prompted, use the “Browse” button to point at
the firmware update file and click Next to continue.
Browse
button
6) Do not disturb the USB cable connection during the
update process. The firmware update takes up to
15 minutes to complete. Be sure the computer does
not “Time Out” during the update process.
7) When the update is complete, click Finish to exit the
Update Wizard.
8) Cycle the power on the processor to restart using
the updated firmware.
Software and
Firmware Updates
Check for the latest versions of the control panel soft-
ware and to see that the hardware includes the latest
firmware.
ASPEN models with a front panel LCD will display the
firmware version on the LCD and in the control panel
GUI after the software is installed. Other models display
the firmware version in the GUI only. Firmware updates
require that the ASPEN software be installed to enable
a connection and use the update utility included in the
software.
Firmware
version
Firmware version
Obtaining Updates
The latest versions of software and firmware are pro-
vided on the disk supplied with the unit and download-
able from:
http://www.gnarlywireless.com/AspenSupport/
Link on home page: http://www.lectrosonics.com
ASPEN Software: Uninstall any previous version be-
fore installing an updated version.
Downloaded files arrive in a .zip format. Extract the files
to a folder on your local drive and then run “setup.exe”
to install the program.
Firmware Updates: Downloaded files arrive in a single
.zip file with the model number and version indicated by
the filename.
Extract the file to a folder on your local drive. The result-
ing filename will indicate the model number and ver-
sion, followed by the extension “.update.”

SPN Trio
LECTROSONICS, INC.
14
Connecting to a Unit
Connect the processor to the computer using
whichever interface you prefer. Turn on the power and
wait for the USB port to be recognized and configured.
Launch the ASPEN software. The first screen to
appear is blank with tabs at the top of the window to
select the desired action.
Select the Connect tab and then click on the method
of communication (USB in this example). When the
popus window appears, click OK to acknowledge the
Master unit.
The Master Unit
will appear in this
popup window
The left side of the control panel will appear with a list
of processors that are connected. Click on a unit in
the list to open its control panel. The processors will
appear in the same order that they are cabled together.
Click on the desired
unit in the list
The panel opens to the Activity window, which is a
real time level display for all channels. Gain and Mute/
Unmute status can also be selected in this screen.
Tabs open
setup screens
Scroll to
additional tabs
Tab opens device list
Selected unit is
highlighted in the list
Device information
across bottom of screen
Navigating the Control
Panel
The control panel GUI is arranged in a tabbed format
that allows immediate access to all setup screens.
Tabs are located in various locations to access setup
screens. Scroll buttons allow access to additional tabs.
Secondary
setup tabs
Device settings tab
Setup tabs
Scroll to additional tabs
Scroll to additional tabs
NOTE: Right click in the setup area for a Quick
Select pull down list of available setup tabs

Installation and Startup Guide
Rio Rancho, NM 15
Minimum Setup
Requirements
Since the SPNTrio contains an 8x12 mixer and a
conference interface, setup is similar to configuring
two separate processors. The following settings are
the minimum necessary to allow the mixer to pass
signals and to create the signal paths needed for the
conference interface to function.
STEP 1 - Inputs Tab (Mic/Line Inputs)
• Adjustgainonmic/lineinputsinuse
• SetphantompowerONifneeded
• Invertpolarity(phase)ifneeded
• SelectMute/Unmute
Select Phantom Power,
Polarity (phase) and
Mute/Unmute status
Adjust Gain using the slider
or enter the value directly
Inputs Tab
Mic/Line Tab
STEP 2 - Inputs Tab (Conferencing Inputs)
• Adjustgainoninputsinuse
• Invertpolarity(phase)ifneeded
• SelectMute/Unmute
Adjust Gain using
the slider or enter
the value directly Inputs tab
Conferencing tab
Invert polarity (phase) if needed
and select Mute/Unmute
STEP 3 - Matrix Tab
This step defines the mixes that will be used to
provide the source signals for the local sound system,
conferencing outputs and AEC.
• Setgainatcrosspointsforlocalsoundsystem
(and monitors if used - see note)
• SetgainatcrosspointsforAECSignalMix
• SetgainatcrosspointsforTEL,COD1,COD2
• SetgainatcrosspointsforAECReferenceMix
Define the Local Mixes to route the microphone and
line inputs to loudspeakers and local monitors.
Matrix tabMic/Line inputs tab
Mix bus selection Set gain at crosspoints to route local
microphones to local sound system
Crosspoints for
local monitors

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NOTE: In this example, Mix Bus 7 is used to
create a feed to local monitor speakers (as might
be used in an adjacent control room) powered by
the built-in amplifier in the SPNTrio. The power
amp outputs could just as well be used to power
loudspeakers in the conference room.
Crosspoints in the Local Mixes for room loudspeakers
can be configured using the Phantom Mode as shown
below. In this mode the audio is not actually routed
to the output, but the auto-mixing data from the mic
is applied to the auto-mix bus as if it was. This allows
that microphone to contribute to the mixing activity in
zones where it is not being sent. The result is more
transparent and effective auto-mixing throughout the
entire room.
Matrix tab
Mic/Line Inputs tab
Mix Bus selection
Right click on the mix-minus
crosspoints and set the Crosspoint
Mix Mode to Phantom
Far end connections are routed through the matrix to
feed the local loudspeaker system.
Far end receive signals can also be routed in a mix
minus configuration for multi-screen telepresence
systems to direct the audio to the appropriate screens.
Far end connections are routed
through the matrix to feed the
local loudspeakers
The AEC Signal Mix routes the local microphone
signals to the input of the acoustic echo canceller
as shown in the example below. Mix Bus 47 is used
to create these mixes to keep them visually well
separated from the buses used for the Local Mixes.
Matrix tabMic/Line inputs
Mix bus selection Set the gain on the crosspoints used
to create the AEC Signal Mixes that
will be routed to the AEC input.
Several mixes are needed to establish the signal
routing for conferencing. In this example, all three
far end connections are used to enable multi-site
conferencing. It is suggested that you use Mix Buses
44, 45, 46 for the far end Send Mixes and AEC output,
and Mix Bus 48 for the AEC Reference Mix so that
they are visually well separated from the local PA
mixes.
Matrix tab
Conferencing Inputs tab
Mix bus selection
Send Mixes
AEC Output AEC Reference Mix

Installation and Startup Guide
Rio Rancho, NM 17
Send Mixes: Each far end signal is routed to the
opposite far ends, but not back to itself (mix-minus).
AEC output: Contains the local microphone signals
after the echo cancellation is applied, which is sent to
the far ends along with the far end signals.
AEC Reference Mix: The far end signals are routed
to the input of the AEC to enable acoustic echo
cancellation.
For a Single Far End Connection
When a single far end connection is all that is needed,
one crosspoint provides the AEC Reference and
another is used to route the AEC Output to the far end.
AEC Reference
(far end receive)
AEC Output
(to be sent to far end)
STEP 4 - Output Source Tab
Once the matrix crosspoints are defined, the next step
is to assign the mixes that will be used for each output
on the processor.
• Selectsourcesforthelocalsoundsystem(and
monitors if used)
• SelectsourcesfortheAECSignalandReference
Mixes
• SelectsourcesforTEL,COD1,COD2
Select the Mix Bus to feed each output being used for
the local sound system loudspeakers as defined in
STEP 3.
Output Source tab
Outputs 1-12 Select Mix buses to
feed each output
Output Source tab
Power Amp Outputs
Select Mix Buses to feed
the built-in power amplifier
Select the Mix Bus for the AEC Signal Mix as defined
in STEP 3.
Scroll tabsConferencing tab
Acoustic Echo Canceller tab
Enable AEC and select
Final Mix Buses for Signal
and Reference Mixes

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Select sources for far end conference mixes as defined
in STEP 3.
Scroll tabs
Output Source tab
Conferencing Outputs
Select Mix Buses for
far end connections
STEP 5 - Outputs Tab
Navigate to each Output tab at the lower part of the
screen and adjust levels as needed.
Scroll tabsOutputs tab
Select tabs to access level setup
screens for all outputs in use
STEP 6 - Conferencing Tab
Configure the Telephone, Codec 1 and Codec 2
interfaces with the setup screens for each one.
Scroll tabs
Conferencing tab
Select tabs for Telephone,
Codec 1, Codec 2 and configure
the interfaces as needed

Installation and Startup Guide
Rio Rancho, NM 19
Stacking Multiple Units
If Slave units are not powered up when the Master unit
boots up, the Slave may not be detected for several
minutes. It is good practice to turn all units on simul-
taneously or turn on Slave units before turning on the
Master unit.
The available processors will appear in a “stack” on the
left side of the control panel. The Master unit will appear
at the top of the stack, with Slave units below it appear-
ing in the order that they are connected through the
ASPEN port jacks.
List of connected units
Refer to the cabling diagram for the ASPEN ports in the
section entitled Hardware Installation.
Check the LCD display on the Master unit to see if it
has detected all the Slaves.
The LCD will
show the mode,
the position and
total number
of units in the
stack.
Shown here is
the Master as
unit 1 of 2.
The Master unit will always be number one in the stack
as shown here, and each slave will be numbered in the
order that it is connected with the cabling of the ASPEN
port jacks.
Refer to the Help Files
Once the processors are installed, configured and com-
municating with a computer system, refer to the Help
files in the software GUI for additional information re-
garding the available settings, adjustments and control.
Saving Settings
Saving to a Preset
Settings must be saved to a preset in the processor to
be available for normal operation.
Device Settings tab
Preset Management tab
Select a Preset to store settings
and click Store to load the settings
into the processor memory
Saving to a Disk for Backup
Settings can easily be copied to a disk file as a backup
with the File tab and popup window.
File tab Select “Save Settings As...”
Select folder and filename
in the popup window
Additional Adjustments
After the minimum required settings are configured, and
saved, the processor will pass signals. Fine adjustments
to levels, filters, limiters and compressors can then be
made to complete the setup for all inputs, crosspoints
and outputs. Be sure to save the settings again after the
fine adjustments have been made.

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Using the LCD
The LCD can be used to check current settings or make
adjustments without using a computer interface.
Boot Screen
Main Window
The LCD will
show the mode,
the position and
total number
of units in the
stack.
Shown here is
the Master as
unit 1 of 2.
Navigation Control
The navigation control for the LCD consists of a rotary
control and four directional buttons for selection of
menu items and to enter values. The four outer buttons
are referenced as LEFT, RIGHT, UP and DOWN. Press-
ing the center of the rotary control provides a “select” or
“center switch” function.
Press both Left and Right buttons to
turn the LCD backlight OFF and ON
Center Switch
The LEFT (9:00 o’clock) functions as a BACK button
to return to the previous menu from setup screens as
prompted by the symbol in the lower left corner of
the LCD.
Shortcut Buttons
• LCDBacklightToggle:Press both the LEFT and
RIGHT (9:00 and 3:00 o’clock) buttons to turn the
backlight on and off.
• EmergencyMute(panicbutton):Pressing the UP
and DOWN buttons together will mute all outputs to
remedy situations such as runaway feedback.
• RestoreDefaultSettings(MasterReset):Hold
in the LEFT and UP buttons while turning on the
power to restore the factory default settings. The
Alert LED will glow white during the process, which
takes about 75 seconds to complete.
Panel Lock/Unlock
From the Main Window, use the rotary control to select
SYS in the lower row window and press the center
switch. Then scroll down with the rotary control to the
menu item named Front Panel Lock and press the cen-
ter switch to enter the setup screen.
Select the Unlocked/Locked item with the rotary control,
press the center switch.
A prompt will appear asking you to enter the passcode.
The factory default passcode is five presses of the cen-
ter switch. Once the correct passcode is entered, the
panel will allow access to the screen items to change
the unlocked/locked status, enter a new passcode and
save the results.
The passcode can consist of any combination of five
successive button presses of the four outer switches
and the center switch such as: LEFT > RIGHT > UP >
DOWN > CENTER.