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INSTALLATION and STARTUP GUIDE
SPNCWB/E01
Conference Interface - Wideband Bridging
Software and Hardware Installation and Setup
Fill in for your records:
Serial Number:
Purchase Date:
Rio Rancho, NM, USA
www.lectrosonics.com
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SPN Conference
Important Safety Instructions
This symbol, wherever it appears, alerts
you to the presence of uninsulated dangerous 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 maintenance 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, electric shock and injury to persons, including 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 accordance with the manufacturer’s instructions.
8) Do not install near any heat sources such as radiators, 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 receptacles, and the point where they exit from the
apparatus.
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.
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 possible 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
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Installation and Startup Guide
Table of Contents
Important Safety Instructions ......................................................2
Controls and Features ................................................................4
Front Panel .................................................................................4
Rear Panel ..................................................................................5
Hardware Installation ..................................................................6
Installing the chassis into a rack .................................................6
Cables .......................................................................................6
Audio Connectors ......................................................................6
Audio Inputs – Unbalanced ........................................................6
Audio Inputs – Balanced .............................................................6
Audio Outputs .............................................................................7
Telephone Line Jack ................................................................... 7
Programmable Inputs .................................................................7
CODEC and TEL Remote Control Ports ..................................... 7
Power Amp Outputs ....................................................................8
Programmable Outputs...............................................................8
ASPEN RS-232 Port ................................................................... 9
Connecting the Master for the First Time ...................................9
Cabling Of Stacked Units ............................................................9
Software and Firmware Updates .............................................. 10
Creating an ASPEN Installer Disk ............................................10
Firmware Update Procedure ....................................................11
MCU Recovery from Interrupted Firmware Update Procedure 11
Software Installation .................................................................12
USB Driver Installation .............................................................13
Minimum Setup ......................................................................... 14
Stacking Multiple Units .............................................................16
Refer to the Help Files ..............................................................16
Multi-site Bridging Setup...........................................................17
AEC Reference Mix ..................................................................17
AEC Signal Mix .........................................................................18
Enable the AEC and Define the Inputs .....................................18
SEND Mixes .............................................................................19
LOCAL Mixes ...........................................................................20
The Finished Setup ..................................................................21
Service and Repair ................................................................... 22
Returning Units for Repair ........................................................ 22
Introduction
The SPN Conference interface combines the audio
from a telephone line, two codecs and microphones
in the local sound system to provide natural sounding
telepresence and audio conference meetings. A powerful AEC (acoustic echo canceller) is provided, which
converges fast enough to follow multi-site bridging and
gain proportional automatic mixing without losing convergence depth. The AEC can handle an unlimited number of microphones and will re-converge quickly enough
to follow the movement of a wireless microphone.
Three sites can be bridged into a single conference
with one SPN Conference processor. Three additional
sites can be added with another processor with signals
combined into the ASPEN matrix for extensive routing
and processing options.
The outstanding performance of the AEC is further enhanced with patented, seamless automatic mixing. The
automatic mixing is applied at the crosspoints in the
matrix, which allows each signal source to exhibit a different behavior at the system outputs. This is useful, for
example, when the signal must participate in the conference using one of several automatic mixing modes on
some outputs, and be recorded with no processing on
other outputs.
Every input includes a dynamic noise reduction filter to
enhance dynamic signals and suppress steady state
noise. This unique algorithm is a single ended, frequency selective process that significantly reduces noise
from one or multiple sources. It is especially useful with
noisy teleconference connections.
For convenience, a TCP/IP addressable Ethernet port
and built in power amplifier are included.
This manual covers hardware installation and wiring and the installation of ASPEN software. Once the
processor is communicating with a computer, refer to
the Help files in the software control panel for additional
setup and configuration settings.
*Crestron® is a registered trademark
of Crestron Electronics, Inc.
Rio Rancho, NM
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 missing or damaged. The sooner you notify us,
the sooner you will get any needed replacement items
shipped to your location.
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SPN Conference
Controls and Features
Front Panel
Headphone Monitor
MCU Recovery
Headphone Monitor
Standard 1/4 inch jack and level control. Drives both
channels of stereo headphones.
MCU Recovery (recessed pushbutton)
Used in the procedure to recover from an interrupted
firmware update procedure. See section on Firmware
Update Procedure for details on usage.
USB Port
Comm
LED
Alert
LED
Power
LED
POWER
Switch
USB Port
Standard USB connector for the setup and control from
a computer using Windows XP, Vista or Windows 7 operating system. The USB port is also used for firmware
updates.
Status LEDs
• Comm LED - indicates USB, RS-232 and network
communication
• Alert LED - blinks to indicate fault or error
• Alert LED - glows steady in firmware update mode
• Power LED - glows to indicate power ON
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LECTROSONICS, INC.
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Rear Panel
Cooling Fan
Outlet
Installation and Startup Guide
Programmable Input
and Output Ports
100 - 240 VAC
50/60 HZ
15 WATTS
Adaptive Proportional Gain Mixing
SPN CONFERENCE
US Patent 5,414,776
Power Inlet RS232
RS-232
Serial Port
PROG IN
ETHERNET
Ethernet
Port
Data/Audio
Programmable Input and Output Ports
Programmable inputs and outputs used to control
levels, settings, indicate the current state of a programmable input and control a variety of other parameters.
ASPEN Bus Data/Audio Ports
This gigabit bus transports audio and data from one
board to the next through CAT-6 cabling (maximum 2
meters or 6.5 ft length) and RJ-45 connectors. Processors are normally installed with the Master 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.
GND
+5V
PROG
OUT
ASPEN PORT
Bus Ports
LINE
LINE
INPUTS
Remote
Control
RC 2
REMOTE
CONTROL
RC 1
Speaker
Terminals
POWER AMP
OUTPUTS
1
OUTPUTS
CODEC
1
2
Line Outputs
(Codecs)
CODEC
CODEC
CODEC
2
1
2
Line Inputs
TELEPHONE
(Codecs)
SET
LINE
Telephone
Set/Line
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.
Audio Inputs and Outputs
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.
Rio Rancho, NM
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Hardware Installation
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 appropriate 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 that you use lacing bars for cable
strain relief when mounting in a rack. Use only professional audio cable with proper shielding – typically, two
conductor plus ground/shield.
Audio Connectors
The analog audio inputs and outputs are connected
through 5-pin de-pluggable connectors. Strip the insulation back 1/8 to 3/16” but do not tin (apply solder to)
the leads. Insert the wire into a de-pluggable connector, leaving less than 1 mm of bare wire exposed, then
tighten the retaining screw.
Audio Inputs – Unbalanced
Unbalanced audio sources include items such as consumer VCR’s, DVD players, etc., which can be connected with either 2-wire or 3-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.
Source
Unbalanced source to
ASPEN input – 3-wire cable
Two wire cables should have a jumper between the
processor (–) input and ground.
Shield
Processor
Caution: Do not overtighten the screws.
Retaining Screw
(Do not overtighten)
5-pin depluggable
connector
Do not leave more than
1 mm of exposed wire
beyond the connector.
Do not apply
solder to leads
Note the labeling on the rear panel for the positive and
negative leads. Ground is shared between two connections (the center pin).
Note: ASPEN processors do not have a “pin 1
problem.” Inputs and outputs are true differential
connections.
Source
Shield
Processor
Unbalanced source to
ASPEN input – 2-wire cable
Audio Inputs – Balanced
Balanced audio sources connect to the processor inputs in a straight “pin to pin” configuration.
Source
Balanced source to
ASPEN input
Shield
Processor
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Installation and Startup Guide
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
Audio Outputs
The line outputs are a balanced differential configuration 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.
Shield
Output
Destination
Balanced output to
balanced destination
Balanced output to unbalanced input with a 3-wire
cable is connected with the cable shield added to the
(–) terminal on the destination input.
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 programmable input pins.
Output
Balanced output to unbalanced
destination – 3-wire cable
Balanced output to unbalanced input with a 2-wire cable
is connected with the output (–) connected to the cable
shield at the processor output.
Output
Balanced output to unbalanced
destination – 2-wire cable
Telephone Line Jack
Connect a standard telephone cable with RJ11 connectors between the back panel Telephone Line Jack and
the host telephone system.
Shield
Shield
Destination
Destination
Programmable
Inputs
Programmable
Outputs
Ground
+5VDC
CODEC and TEL Remote Control Ports
These RJ-45 connectors are used with the RCWTH4
remote control module, connected with standard CAT-5
cabling. Each port is assignable to Codec 1, Codec 2 or
the telephone line.
Remote Control Ports
can be assigned to
Codec 1, Codec 2 or
the Tel LIne.
1 GND
2 Connect Button
3 Privacy Button
4 Volume Up Button
5 Volume Down Button
6 Privacy LED
7 Connect LED
8 GND
Rio Rancho, NM
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SPN Conference
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
380 Ohms
Pro gr amma b le Output Pi n
380 Ohms
Programmable Output Pin
1N4001
or equi v .
Exte r na l
DC V oltag e
Source
(<40VDC)
Rel a y Coi l
Coil current <100mA
Pro gr amma b le Output Pi n
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
+
-
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 programmable 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.
Note: The diagram above shows an external DC source powering the relay coil. This is necessary whenever coil voltages
exceed 5 volts.
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.
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.
8
-
+
BTL output wiring
LECTROSONICS, INC.
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Installation and Startup Guide
Wiring Diagram
1
1
ASPEN RS-232 Port
Here is the wiring diagram for the ASPEN RS-232 Port
for connecting to a PC.
ASPEN Device to PC
1
2
TX
3
ASPEN
RS-232
Port
DCE pin
functions
Female
jack
RX
GND
4
5
6
7
8
9
Male
connector
Crestron® RS-232 Port Wiring
2
TX
3
RX
ASPEN
RS-232
Port
Female jack
GND
4
5
6
7
8
9
Male
connector
Wiring Diagram
1
DCD
2
RX
3
TX
4
DTR
5
GND
6
DSR
7
RTS
8
CTS
9
RI
Female
connector
2
3
4
5
6
7
8
9
Female
connector
RX
TX
GND
Host
Serial
Port
(PC)
DTE pin
functions
Male jack
Crestron
RS-232
Male jack
Port
Connecting the Master for the First Time
NOTE: Install ASPEN software before connecting
the Master unit to a computer.
The computer operating system will automatically detect and configure a USB port for the Master unit when
it is connected and turned on the first time. Wait for the
screen message that advises that the new device has
been configured and is ready for use.
Cabling Of Stacked Units
In a stacked configuration, ASPEN processors must
be interconnected as shown here. The ASPEN bus is
bidirectional, allowing data and audio to be propagated
forward and backward through a single cable connection. 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. This architecture allows
all Slave units to have access to the mixing data and
audio in all 48 final mixes.
Each circuit board has an upper and a lower ASPEN
bus connector. Since there are two circuit boards in a
2RU unit such as the SPN1624, the circuit boards are
connected in the same manner as if they were each in
a separate chassis.
1RU SPN
Conference
configured as
Master
ASPEN PORT
Rio Rancho, NM
2RU SPN1624
configured as
intermediate
Slave
1RU SPN16i
configured
as lowermost
Slave
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 the
Master.
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Software and Firmware
Updates
Check for the latest versions of the control panel software 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
Creating an ASPEN
Installer Disk
To create an Aspen Install Disk, go to the following site
and download the ASPEN Installation Disk .iso file.
www.lectrosonics.com>SUPPORT
Link from the home page:
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.
Firmware version
Obtaining Updates
The latest versions of software and firmware are provided on the disk supplied with the unit and downloadable from:
Link on home page: http://www.lectrosonics.com
ASPEN Software: Uninstall any previous version before 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 resulting filename will indicate the model number and version, followed by the extension “.update.”
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Installation and Startup Guide
Firmware Update
Procedure
1) Install ASPEN software. See the next 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 configuring 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.
MCU Recovery from Interrupted Firmware
Update Procedure
If instructed to do so by Lectrosonics Customer Support, the firmware in a non-functioning unit can be
restored.
Launch the Control Panel program. After the panel
opens, click on Connect->Update Firmware...
In the lower part of the screen is a check box that is
used only for the recovery process. When the box is
checked, the instructions will change to describe the
recovery procedure.
Recovery check box
Follow the on-screen prompts to return the unit to normal operation.
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.
Rio Rancho, NM
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Software Installation
NOTE: Uninstall previous version before installing
the software.
The example shown here illustrates the installation procedure 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.
It is usually best to accept the default folder for the
installation. Click on Next to continue.
When the Welcome screen appears, click on Next.
The End User License Agreement screen appears.
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.
Click on I Agree, then on Next to continue.
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USB Driver Installation
The example shown here illustrates the installation procedure using a Windows operating system. The screens
that appear at each step using another operating system will vary, but the general steps are very similar. The
driver installation only needs to be done once on each
PC that will be connected to an ASPEN unit.
Visit http://www.lectrosonics.com, hover your mouse
over Support and click on Aspen Support, then USB
Drivers.
Download the USB Driver Installer.
Installation and Startup Guide
The ASPEN Device Installer opens.
Click Next to proceed.
The End User License Agreement is presented.
A zipped file will appear.
NOTE: You must first click on “Extract All” in order
to install the appropriate drivers.
Two versions of the installer are included, one for 32-bit
Windows PCs and another for 64-bit Windows PCs:
• “dpinst-x86.exe” for 32-bit Windows
• “dpinst-amd64.exe” for 64-bit Windows
To start the installer:
Double-click on the appropriate .exe file.
Accept, then click Next to proceed.
When installation is complete, the Driver Name and
Status are displayed. Click Finish to close the Device
Installer.
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Minimum Setup
A required minimum setup is needed to allow the
SPNConference processor to pass signals and provide
acoustic echo cancellation:
• Define the Inputs and adjust gain
• Define the Crosspoints
• Define the Outputs and adjust levels
• Define the AEC Reference Mix
• Define the AEC Signal Mix
NOTE: See page 17 for Multi-site Bridging Setup
Launch the ASPEN Control Panel. The first screen 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). A window will
open displaying the Master unit connected to the computer. Click on OK to continue.
Click on the
connection method
The panel opens to the Activity window, which is a real
time level display.
Click on the Inputs tab to open the setup screen and
define the inputs that will be used for the basic setup.
This popup will
appear with
the Master unit
displayed
Click on OK to continue
NOTE: It normally takes a few moments for the
Master to detect all slaves below it after power up.
The next screen includes a list of all connected processors in the left side of the panel. Click on the desired
unit in the list to open a control panel for that processor.
Click on the desired unit in the
list of connected processors.
Click on the Matrix tab to open the setup screen and
define the crosspoints for the basic signal routing.
Click on the Output Source tab and define the signals
to appear at the desired outputs.
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Click here to scroll tabs
LECTROSONICS, INC.
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Installation and Startup Guide
Click on the Outputs tab and set the output levels.
Setup the conferencing activity and telephone settings
on the Conferencing screen. Scroll to the right to access the tab.
NOTE: See page 17 for Multi-site Bridging Setup
Scroll tabs
Conferencing Tab
Set up the SPNConference to generate the AEC
Reference mix (far side signals entering the local
room). Assign the Tel and Codec sources to the final
mix in the matrix setup screen in the SPNConference
processor (Final Mix 48 in this example).
SPNConference
Assign far side signals to a final
mix for the AEC Reference
Set up the SPN mixer to generate the AEC Signal
mix (local microphones and media sources to be
sent to the far side). Assign these signal sources in
the matrix tab of the SPN mixer connected to those
sources (SPN1624 and Final Mix 47 in this example).
Assign local microphones to a
final mix for the AEC Signal
Define the signal routing for AEC activity on the Acoustic Echo Canceller screen. Enable this screen by
clicking on the AEC tab located near the bottom of the
control panel screen.
Define the final mixes
to be used for the AEC
Reference and AEC
Signal Mixes
AEC Tab
SPN1624
The Device Settings tab opens access to several setup
screens such as Preset Management where the setup
can be stored for later recall.
Device Settings tab
Category bar for access to
setup screens
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SPN Conference
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 simultaneously 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 appearing in the order that they are connected with the cable
connections to the ASPEN port jacks.
List of connected units
Refer to the cabling diagram for the ASPEN ports in the
section entitled Hardware Installation.
Refer to the Help Files
Once the processors are installed, configured and communicating with a computer system, refer to the Help
files in the software GUI for additional information regarding the available settings, adjustments and control.
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LECTROSONICS, INC.
Page 17
Special Section - Multi-site Bridging
Multi-site Bridging Setup
First, set up the processor for local sound reinforcement
with input and output levels adjusted, and crosspoints
defined for local sound reinforcement. Refer the the
previous section entitled Minimum Setup for details.
Multi-site bridging requires a minimum of four mixes to
route the signals needed for a conference:
• AEC REFERENCE MIX
• AEC SIGNAL MIX
• SEND MIXES (includes the AEC output)
• LOCAL MIXES
The AEC REFERENCE MIX is a mix of the far side
signals routed to the AEC for echo cancellation. We
recommend that you use mix bus 48 for this mix.
The AEC SIGNAL MIX is a mix of the local microphone
signals which is routed to the AEC. The AEC then identifies and cancels the far side signals that have entered
the microphones along with the local audio. We recommend that you use mix bus 47 for this mix.
The SEND MIXES consists of 3 signal sources:
• The AEC output, which is a mix of all the local
microphones after echo cancellation.
• Multimedia sources to be delivered to any one or
all far sides.
• Far side signals to be routed to the other far sides.
With regard to bridging, you will need to assign a bus
for each outbound signal. For example, if you have just
a telephone line, you will only need one SEND mix for
the Tel Line Out. If you have one phone and two Co-
decs, you will need three SEND mixes, one mix each
for the Tel Line Out, Codec 1 Out and Codec 2 Out. We
recommend you use the mix busses 46, 45, 44, etc. for
these signal mixes.
The LOCAL MIX includes the far end signals, program
audio, and any local microphones that require amplification. Mix-minus can be on multiple busses to improve
gain-before-feedback. We recommend that you use mix
busses 1, 2, 3, etc. for these mixes to keep them well
separated in the matrix from the mixes used for conference connections. There is no technical or performance
reason for this separation; it simply makes it easier to
visualize the matrix during setup.
AEC Reference Mix
The AEC Reference Mix should carry ONLY the incoming signals from the far side (telephone and codecs)
which is the inbound part of any two way communications line. DO NOT put any microphones or local line
level sources (such as multimedia inputs) on this mix.
SPNConference
AEC Reference Mix
Local Mixes
1
2
Signal
Input
AEC
Ref
Input
Tel Line In
Codec 1 In
Codec 2 In
Signal added to mix (matrix)
Mixes for output signals (outsource)
AEC in (Signal Mix)
AEC Reference Mix
AEC out ( to Far Side)
AEC out ( to Far Side)
AEC out ( to Far Side)
45
48
463
44
47
AEC Reference Mix
Tel Line Out
Codec 1 Out
Codec 2 Out
SPN1624
SPNConference
Processor
Matrix Tab
17
Page 18
Special Section - Multi-site Bridging
AEC
Signal
Input
Ref
Input
Tel Line In
1
48
47
463
2
SPNConference
SPN1624
45
44
Codec 1 Out
Codec 2 Out
Codec 2 In
Codec 1 In
Tel Line Out
AEC in (Signal Mix)
AEC out ( to Far Side)
AEC Reference Mix
AEC out ( to Far Side)
AEC out ( to Far Side)
Local Mixes
Signal added to mix (matrix)
Mixes for output signals (outsource)
AEC Signal Mix
AEC Signal Mix
This mix should include ONLY the local microphones,
with no multi-media sources and no line level inputs.
Enable the AEC and Define the Inputs
Navigate to the AEC setup screen in the SPNConference processor and select the Reference and Signal
mixes for the inputs to the AEC.
Scroll to the right and select
the Conferencing tab
Enable the AEC and define the busses
for the Signal and Reference mixes
Select the Acoustic Echo
Canceller tab
SPN1624
Processor
Matrix Tab
AEC Signal MIx
18
Page 19
Special Section - Multi-site Bridging
AEC
Signal
Input
Ref
Input
Tel Line In
1
48
47
463
2
SPNConference
SPN1624
45
44
Codec 1 Out
Codec 2 Out
Codec 2 In
Codec 1 In
Tel In + Local
Codec 1 + Local
Codec 2 + Local
Tel Line Out
AEC in (Signal Mix)
AEC out ( to Far Side)
AEC Reference Mix
AEC out ( to Far Side)
AEC out ( to Far Side)
Local Mixes
Signal added to mix (matrix)
Mixes for output signals (outsource)
SEND Mix
SEND Mixes
Assign the output of the AEC plus any multi-media
sources to the mixes used to SEND audio to the far
sides.
The far side Codec and Telephone signals are routed in
a mix-minus fashion so that each of them is sent to the
outputs feeding the other two, but not back to itself:
Input Outputs
Tel Line In Codec 1 Out, Codec 2 Out
Codec 1 In Tel Line Out, Codec 2 Out
Codec 2 In Tel LIne Out, Codec 1 Out
Assign the AEC output to the
SEND mixes for the far side
Define the inputs for the far side SEND signals (the
AEC output) in the Conferencing Outputs screen.
Select the Output Source tab
BE CAREFUL WITH THE SEND MIX! Make
certain that you do not accidentally route the
incoming telephone signal back to itself on the
outgoing telephone SEND mix, or a Codec back to
itself, etc!
Define the Final Mixes for the far
side SEND signals as follows:
• TEL: Final Mix 44
• CODEC 1: Final Mix 45
• CODEC 2: Final Mix 46
Select the Conferencing Outputs tab
Route the TEL and CODEC signals from the far side
through the matrix in a mix-minus configuration so
that they do not connect back to themselves
19
Page 20
Special Section - Multi-site Bridging
AEC
Signal
Input
Ref
Input
Tel Line In
1
48
47
463
2
SPNConference
SPN1624
45
44
Codec 1 Out
Codec 2 Out
Codec 2 In
Codec 1 In
Tel In + Local
Codec 1 + Local
Codec 2 + Local
Tel Line Out
AEC in (Signal Mix)
AEC out ( to Far Side)
AEC Reference Mix
AEC out ( to Far Side)
AEC out ( to Far Side)
Local Mixes
Signal added to mix (matrix)
Mixes for output signals (outsource)
LOCAL Mixes
LOCAL Mixes
These mixes deliver the audio from the far sides and
the microphones into the room. Signal routing for local
sound reinforcement often uses a mix-minus configuration to reduce feedback in the local sound system and
echo heard at the far side. To keep picture and audio
together for a more realistic environment, telepresence
systems normally route the far side audio to loudspeakers next to the video monitor for that far side.
In the following example, crosspoints are shared between far side signals and local microphones, but this is
not always the case.
TEL and CODEC far end signals are routed
to busses feeding the local sound system
NOTE: In a telepressence system, far side signals
would typically be routed to the loudspeakers
located next to the video monitor for that far side.
Microphones are routed to feed signals to
output channels feeding loudspeakers
In some acoustic spaces it is beneficial to configure
crosspoints that would normally be disabled in the
Phantom Mix mode.
20
Page 21
Special Section - Multi-site Bridging
In this example, crosspoints 1-1, 2-2 and 3-3 are set to
the Phantom Mix mode. This allows the audio from that
input to participate in the automatic mixing algorithm,
but the audio itself is not delivered to that output.
Crosspoints in the Local Mixes for the sound system
can be configured in the Phantom Mix mode.
The dark rectangular icons indicate that the
phantom mix mode has been selected for
crosspoints 1-1, 2-2 and 3-3.
The Finished Setup
The setup for a multi-site conference was broken down
into separate steps on the previous pages. This diagram
depicts the entire setup with all crosspoints and signal
routing included.
SPNConference
Tel Line In
Codec 1 In
Codec 2 In
Signal
Input
AEC
Ref
Input
Local Mixes
1
2
AEC out ( to Far Side)
AEC out ( to Far Side)
AEC out ( to Far Side)
45
463
44
Finished Matrix Setup
AEC in (Signal Mix)
AEC Reference Mix
48
47
Tel Line Out
Codec 1 Out
Codec 2 Out
SPN1624
Tel In + Local
Codec 2 + Local
Codec 1 + Local
Signal added to mix (matrix)
Mixes for output signals (outsource)
Extensive signal processing is provided for all inputs
and outputs, and five different mix modes can be defined at the matrix crosspoints. Refer to the Help files in
the software control panel for details.
21
Page 22
SPN Conference
Service and Repair
If your system malfunctions, you should attempt to correct or isolate the trouble before concluding that the equipment
needs repair. Make sure you have followed the setup procedure and operating instructions. Check the interconnecting cables and then go through the Troubleshooting section in this manual.
We strongly recommend that you do not try to repair the equipment yourself and do not have the local repair shop
attempt anything other than the simplest repair. If the repair is more complicated than a broken wire or loose connection, send the unit to the factory for repair and service. Don’t attempt to adjust any controls inside the units. Once
set at the factory, the various controls and trimmers do not drift with age or vibration and never require readjustment.
There are no adjustments inside that will make a malfunctioning unit start working.
LECTROSONICS’ Service Department is equipped and staffed to quickly repair your equipment. In warranty repairs
are made at no charge in accordance with the terms of the warranty. Out-of-warranty repairs are charged at a modest
flat rate plus parts and shipping. Since it takes almost as much time and effort to determine what is wrong as it does
to make the repair, there is a charge for an exact quotation. We will be happy to quote approximate charges by phone
for out-of-warranty repairs.
Returning Units for Repair
For timely service, please follow the steps below:
A. DO NOT return equipment to the factory for repair without first contacting us by e-mail or by phone. We need
to know the nature of the problem, the model number and the serial number of the equipment. We also need a
phone number where you can be reached 8 A.M. to 4 P.M. (U.S. Mountain Standard Time).
B. After receiving your request, we will issue you a return authorization number (R.A.). This number will help speed
your repair through our receiving and repair departments. The return authorization number must be clearly
shown on the outside of the shipping container.
C. Pack the equipment carefully and ship to us, shipping costs prepaid. If necessary, we can provide you with
the proper packing materials. UPS or FEDEX is usually the best way to ship the units. Heavy units should be
“double-boxed” for safe transport.
D. We also strongly recommend that you insure the equipment, since we cannot be responsible for loss of or dam-
age to equipment that you ship. Of course, we insure the equipment when we ship it back to you.
Lectrosonics USA:
Mailing address: Shipping address: Telephone:
Lectrosonics, Inc. Lectrosonics, Inc. (505) 892-4501
PO Box 15900 581 Laser Rd. (800) 821-1121 Toll-free
Rio Rancho, NM 87174 Rio Rancho, NM 87124 (505) 892-6243 Fax
USA USA
Web: E-mail:
www.lectrosonics.com sales@lectrosonics.com
Lectrosonics Canada:
Mailing Address: Telephone: E-mail:
720 Spadina Avenue, (416) 596-2202 Sales: colinb@lectrosonics.com
Suite 600 (877) 753-2876 Toll-free Service: joeb@lectrosonics.com
Toronto, Ontario M5S 2T9 (877-7LECTRO)
(416) 596-6648 Fax
22
LECTROSONICS, INC.
Page 23
Installation and Startup Guide
Rio Rancho, NM
23
Page 24
581 Laser Road NE • Rio Rancho, NM 87124 USA • www.lectrosonics.com
(505) 892-4501 • (800) 821-1121 • fax (505) 892-6243 • sales@lectrosonics.com
LIMITED THREE YEAR WARRANTY
The equipment is warranted for three years from date of purchase against defects in
materials or workmanship provided it was purchased from an authorized dealer. This
warranty does not cover equipment which has been abused or damaged by careless
handling or shipping. This warranty does not apply to used or demonstrator equipment.
Should any defect develop, Lectrosonics, Inc. will, at our option, repair or replace any
defective parts without charge for either parts or labor. If Lectrosonics, Inc. cannot
correct the defect in your equipment, it will be replaced at no charge with a similar new
item. Lectrosonics, Inc. will pay for the cost of returning your equipment to you.
This warranty applies only to items returned to Lectrosonics, Inc. or an authorized
dealer, shipping costs prepaid, within three years from the date of purchase.
This Limited Warranty is governed by the laws of the State of New Mexico. It states the
entire liablility of Lectrosonics Inc. and the entire remedy of the purchaser for any
breach of warranty as outlined above. NEITHER LECTROSONICS, INC. NOR
ANYONE INVOLVED IN THE PRODUCTION OR DELIVERY OF THE EQUIPMENT
SHALL BE LIABLE FOR ANY INDIRECT, SPECIAL, PUNITIVE, CONSEQUENTIAL,
OR INCIDENTAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE
THIS EQUIPMENT EVEN IF LECTROSONICS, INC. HAS BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES. IN NO EVENT SHALL THE LIABILITY OF
LECTROSONICS, INC. EXCEED THE PURCHASE PRICE OF ANY DEFECTIVE
EQUIPMENT.
This warranty gives you specific legal rights. You may have additional legal rights which
vary from state to state.
4 April 2019
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