Williams Sound Digi-Loop DL107 NET User manual

DL107 NET, DL107 NET D
DL207 NET, DL207 NET D
DL210 NET 2.0, DL210 NET D 2.0
Digi-Loop®DSP Induction Loop Amplifiers
INSTALLATION MANUAL
MAN 202H
DL107 NET, DL107 NET D
DL207 NET, DL207 NET D
DL210 NET 2.0, DL210 NET D 2.0

DL107, DL207 and DL210 2.0 Digi-Loop™ DSP Induction Loop Amplifiers
2
Table of Contents
Safety Warnings and Instructions 3
How to Read this Manual 4
1. Amplifier Overview 5
2. Getting started: Connecting the amplifier 6
3. Checking and updating firmware 13
4. Installing and configuring the PC App 14
a. Ethernet Control Setup ............................................................................................................................................................................................ 15
b. USB Control Setup .................................................................................................................................................................................................... 16
5. Calibrating & commissioning the loop amplifier 17
6. Appendices 21
a. Maintenance & cleaning .......................................................................................................................................................................................... 21
b. General Troubleshooting ........................................................................................................................................................................................ 21
c. Troubleshooting a firmware update failure ......................................................................................................................................................... 21
d. PC App Detail ............................................................................................................................................................................................................ 22
e. Front LCD Menu .........................................................................................................................................................................................................27
f. Specifications ............................................................................................................................................................................................................ 35
g. Resources ....................................................................................................................................................................................................................37
Warranty 38
NOTICE!
Williams Sound highly recommends that this equipment be installed by
a qualified installer.
This is a person who has taken an Advanced Loop Class.
We recommend the Williams Sound Advanced Loop Class, because it
includes specific information about Williams Sound Loop Amplifiers in the
designing, installing and commissioning of loop systems.

DL107, DL207 and DL210 2.0 Digi-Loop™ DSP Induction Loop Amplifiers
3
Safety Warnings and Instructions
WARNING! TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE.
CAUTION! TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE COVER. NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO
QUALIFIED SERVICE PERSONNEL.
This symbol on the amplifier is intended to alert the user to the presence of un-insulated “dangerous voltage” within the products enclosure that
may be of sucient magnitude to constitute a risk of electric shock to persons.
This symbol on the amplifier is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the
literature accompanying the appliance.
POWER CORD NOTICE FOR INTERNATIONAL OPERATION - Please call Williams Sound Customer Service at 800.328.6190 to order the appropriate
power cord for the country of use.
Important Safety Instructions:
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 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 a third grounding prong. The wide blade or the third prong is 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. Unplug this apparatus during lightning storms or when unused for long periods of time.
13. 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.
14. The apparatus shall not be exposed to dripping or splashing and that no objects filled with liquids, such as vases, shall be placed
on the apparatus.
15. Carts and Stands - The appliance should be used only with a cart or stand that is recommended by the manufacturer. An appliance and cart combination should be moved with
care. Quick stops, excessive force and uneven surfaces may cause the appliance and cart combination to overturn.
16. Wall or ceiling Mounting - The appliance should be mounted to a wall or ceiling only as recommended by the manufacturer.
17. Power Sources - The appliance should be connected to a power supply only of the type described in the operating instructions or as marked on the appliance.
18. Object and Liquid Entry - Care should be taken so that objects do not fall and liquids are not spilled into the enclosure through the openings.
19. Servicing - The user should not attempt to service the appliance beyond that described in the operating instructions. All other
servicing should be referred to qualified service personnel.
Precautions:
1. Power – WARNING, BEFORE TURNING ON THE POWER FOR THE FIRST TIME, READ THE FOLLOWING SECTION
CAREFULLY. The amplifier is designed for use only with the line cord of the region in which it will be operated.
2. Voltage Label (Rear Panel) – A label located at the rear panel power connection indicates the AC power input for the unit. The label
will read 100-240V AC 50-60Hz 210W Auto-switching.
3. Do Not Plug in the input, output, ethernet, or USB connections while the power switch is switched to the “ON” position.
4. Do Not Touch the DL107/207/210 with wet hands. Do not handle the DL107/207/210 or power cord when your hands are wet or damp. If water or any other liquid enters
the DL107/207/210 cabinet, take the DL107/207/210 to qualified service personnel for inspection.
5. Place the DL107/207/210 in a well, ventilated location. Take special care to provide plenty of ventilation on all sides of the DL107/207/210 especially when it is
placed in an audio rack. If ventilation is blocked, the DL107/207/210 may over heat and malfunction. Do not expose the DL107/207/210 to direct sun light or heating
units as the DL107/207/210 internal components temperature may rise and shorten the life of the components. Avoid damp and dusty places.
6. Care – From time to time you should wipe o the front and side panels and the cabinet with a soft cloth. Do not use rough material,
thinners, alcohol or other chemical solvents or cloths since this may damage the finish or remove the panel lettering.

DL107, DL207 and DL210 2.0 Digi-Loop™ DSP Induction Loop Amplifiers
4
Firmware Disclaimer
This product includes the lwIP TCP/IP stack and the Deltatee tftp_server module. To comply with the terms of the licenses for these items, we must
provide you with the following information.
lwIP TCP/IP stack: Copyright (c) 2001-2004 Swedish Institute of Computer Science. All rights reserved.
Deltatee tftp_server module: Copyright (c) Deltatee Enterprises Ltd. 2013. All rights reserved.
Both items are licensed under the following terms.
Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
3. The name of the author may not be used to endorse or promote products derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS’’ AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
How to Read this Manual
The purpose of this manual is to give you supporting documentation for the commissioning of a loop system. You must first (1) connect the amplifier,
(2) calibrate the amplifier to the loop wire(s) and then (3) adjust the output frequency response and automatic gain to be as flat and consistent as
possible. The goal is to meet the IEC Specification for loop systems. It is highly recommended to take an advanced loop class prior to installation
as commissioning is an involved process.
The manual is organized as follows:
1Amplifier overview Describes the purpose of this manual, amp models & features, and basic
commissioning steps
2Getting started: Connecting the
Amplifier
Rear panel jacks, typical connections, do’s and don’ts
3Checking and updating Firmware Checking version, downloading and upgrading firmware
4Installing the PC App Downloading and installing the PC App
5Calibrating and Commissioning Configuring the amplifier to work with the loop wires
6Appendicies Maintenance and cleaning.
Resources.
Front Panel Controls Reference
PC App Reference
Specifications
Warranty

DL107, DL207 and DL210 2.0 Digi-Loop™ DSP Induction Loop Amplifiers
5
1. Amplifier Overview
Thank you for purchasing the DL107/207/210 Digi-Loop™ DSP Induction Loop Amplifier. Williams Sound loop amplifiers deliver the latest in induction
loop technology, and provide integrated DSP audio processing with flexible user control.
Depending on model, the amplifiers accept input(s) of analog, mic or line level, balanced unbalanced, or optional Dante digital.
Control is carried out using the on-board LCD menu (GUI) display and control knob, or via the PC App installed on Windows-based devices
(Windows PC or Surface Tablet).
The DL207 and DL210 models can drive two induction loops or a phased-array. The DL210 models can drive an 8-ohm speaker in place of one
loop, if desired. The D107 can drive a single loop only.
The Williams Sound range of loop amplifier models have a variety of options to suit a wide variety of installation requirements.
DL107 NET DL107 NET D DL207 NET DL207 NET D DL210 NET 2.0 DL210 NET D 2.0
Input: Mic/Line 1 1 1 1 2 2
Input: Line 1 1 1 1 2 2
Input: 70-100 Volt 111111
Input: Dante™ 111
Output: Loop
1 1
2
(dual or phased
array)
2
(dual or phased
array)
2
(dual or phased
array)
2
(dual or phased
array)
Loop Output Power: 9.5 Arms/13.4
Apk
16.1 Vrms/22.8
Vpk
9.5 Arms/13.4
Apk
16.1 Vrms/22.8
Vpk
9.5 Arms/13.4
Apk
16.1 Vrms/22.8
Vpk
9.5 Arms/13.4
Apk
16.1 Vrms/22.8
Vpk
12 Arms/17 Apk
33.3 Vrms/47.6
Vpk
12 Arms/17 Apk
33.3 Vrms/47.6
Vpk
Output: Line 1 1 1 1 2 2
Output: Headphone 111111
Output: Speaker 1 (swap loop A) 1 (swap loop A)
Network Control xxxxxx
All of these models conform to IEC 62489-1 Benchmark Testing Specifications.
Main Features (these vary by model)
• Active protection against short and open circuits (all models) • Meets ADA/ADAAG Guidelines (all models)
• Power-save mode (all models) • Remote Monitoring Support (all models)
• Fan-cooled, temperature regulated (all models) • 2 year Warranty (all models)
• High output current:
9.5 A x1: DL107
9.5 A x2: DL207
12.0 A x2: DL210 2.0
• Speaker output (DL210 2.0 only)
• Master gain Control (all models)
• Active protection against shorted or open
loops (all models)
• Loop-through Line Output (all models)
• Pink Noise (all models)
• Priority Input (all models)
• Input configurable as microphone input or line input, balanced
or unbalanced:
XLR: DL210 2.0
3-position terminal block: DL107/207
Ideal applications for loop systems
• Courtrooms
• House of Worship
• Hearing Assistance
• Conference Rooms
• Standard 19” rack mount:
1RU: DL107, DL207
2 RU: DL210 2.0

DL107, DL207 and DL210 2.0 Digi-Loop™ DSP Induction Loop Amplifiers
6
2. Getting started: Connecting the amplifier
Connection Diagram
The following diagram provides an overview of typical connections. Connect the amplifier as required for your installation.
The amplifier must be connected to the load (loop wire) prior to powering it on. If it is not, it will present a “fault” message and shut down.
INDUCTION LOOP
#1
INDUCTION LOOP
#2
(2nd loop output
available on
DL207/210
models only)
ROUTER
iPAD OR WINDOWS
TABLET WITH WI-FI
ETHERNET
FOR IPAD/PC APP CONTROL ONLY
FIRMWARE UPDATES CANNOT BE DONE THROUGH ETHERNET
LINE-LEVEL AUDIO
FROM MP3 PLAYER,
MIXER, ETC.
AUDIO FROM MIXER,
MICROPHONE, ETC.
FROM COMMERCIAL
SPEAKER SYSTEM
TO RECORDING
EQUIPMENT
USB
FIRMWARE
UPDATES
or
DIRECT
CONTROL
with PC
DANTE
NETWORK
DANTE
AVAILABLE ON
NET-D
MODELS ONLY
NOTE: LEAD WIRES
(FROM AMP TO LOOP)
SHOULD ALWAYS BE
TWISTED
TO MINIMIZE EMI
EXTERNAL CONTROL
SYSTEM, ETC.
ETHERNET
ONLY FOR
CONTROL.
FIRMWARE
CANNOT BE
UPDATED
THROUGH
ETHERNET.
A573

DL107, DL207 and DL210 2.0 Digi-Loop™ DSP Induction Loop Amplifiers
7
Rear connectors
Rear Panel (DL107 NET D shown)
A572
Front LCD Menu (GUI) display Headphone jack
USB
jack
Dante jack
(“D” models only)
Ethernet
jack
Mic/Line
level
inputs
Line
level
output
Spkr
level
input
Loop
output
Power
switch
Line cord
connection
Fuse
access
Loop fault
relay
Line
level
input
USB
jack
Dante jack
(“D” models only)
Ethernet
jack
Mic/Line
level
inputs
Line
level
output
Spkr
level
input
Loop
outputs
Power
switch
Line cord
connection
Fuse
access
Loop fault
relay
Line
level
input
Model &
Serial
numbers
Model &
Serial
numbers
Menu (GUI) display control knob
DL107/207
DL107
DL 207
Rear Panel (DL207 NET D shown)
A572
Front LCD Menu (GUI) display Headphone jack
USB
jack
Dante jack
(“D” models only)
Ethernet
jack
Mic/Line
level
inputs
Line
level
output
Spkr
level
input
Loop
output
Power
switch
Line cord
connection
Fuse
access
Loop fault
relay
Line
level
input
USB
jack
Dante jack
(“D” models only)
Ethernet
jack
Mic/Line
level
inputs
Line
level
output
Spkr
level
input
Loop
outputs
Power
switch
Line cord
connection
Fuse
access
Loop fault
relay
Line
level
input
Model &
Serial
numbers
Model &
Serial
numbers
Menu (GUI) display control knob
DL107/207
DL107
DL 207
Rear Panel (DL210 NET D 2.0 shown)
USB
jack
Dante
jack
(”D”
model
only)
Ethernet
jack
Mic/Line
level
inputs
Speaker
level
input
Line
level
inputs
Line
level
outputs
Loop
outputs
Power
Switch
Line cord
connection
Model &
Serial
numbers
RS-232 &
Fault Relay
jack
Fuse
access
Exhaust
Fan
A599
Front LCD - Menu (GUI) Display Menu (GUI) display control knob Headphone jack

DL107, DL207 and DL210 2.0 Digi-Loop™ DSP Induction Loop Amplifiers
8
The following table provides a quick reference to each connector’s use and configuration adjustments.
Input Connector Configuration/Control
Mic/Line
(balanced or unbalanced) terminal block
Mic Gain: +9 dB to +63 dB (48v phantom power)
Line levels: -10 dBU, -4 dBU, +4 dBU, +8 dBU
48v Phantom Power
Unbalanced Line RCA -10 dBV
70-100 Volt terminal block -
Dante™ RJ-45 -
Control Connector Purpose
Ethernet RJ-45 Control and monitoring over the network
using PC App or MLM
USB USB-B
(versions 1.1, 2.0 or 3.0 supported)
Firmware Updates,
Control by PC App
RS-232 DB-9 loop fault relay output
Output Connector x
Line level terminal block loop-through of mic/line inputs 1 & 2
+4 dBU, balanced or unbalanced
Loop
terminal block
12 Arms/17 Apk,
33Vrms/47.1 Vpk,
0.5 to 3.0 Ω dc
Speaker terminal block output A (configurable) 125 W @ 8Ω
Rack Installation
1. Install into a 19” rack using standard 10-32 rack screws.
2. Leave 1U rack space above for ventilation.
3. A surge protector or power conditioner is highly recommended.
4. Use a grounded outlet.
5. Connect all input/outputs before applying power.
6. Plug in the power cord and turn on the unit.
USB Cable Wiring
A standard USB cable (USB Male A to Male B) can be used to connect a computer (such as a laptop) to the Loop Amplifier directly for initial configuration.
No drivers are necessary, simply plug-in a USB cable, open the PC App, specify USB connection, and the PC App can be used to change settings on
the amplifier. Note: Firmware upgrades can only be done through the USB connection. They cannot be performed through ethernet.
Ethernet Wiring
If connecting directly from a Computer to the Loop Amplifier, an Ethernet Crossover Cable must be used.
If connecting through a network, a standard ethernet cable must be used to connect the Amplifier to the network, and a standard ethernet
cable must be used to connect the Computer to the network.
If a third party controller will be used (Crestron), a standard ethernet cable can be used to connect the amplifier and controller to the network.
Note: A standard ethernet cable is terminated with either T568A pinout on both ends, or T568B pinout on both ends. A crossover cable has T568A
pinout on one end, and T568B pinout on the other end. See the internet for more information about terminating ethernet cables.

DL107, DL207 and DL210 2.0 Digi-Loop™ DSP Induction Loop Amplifiers
9
Using the Dante audio input
The DL107/207/210 NET “D” models provide a Dante RJ-45 network jack. The addition of the Dante jack enables a virtually unlimited number of
digital audio sources to be routed and streamed to the amplifier.
To change the parameters of Dante (i.e. IP address, Dante Device Name) you must use the Dante Controller software on a PC. The Dante
parameters can be viewed, but cannot be set, on the front LCD Display on the loop amplifier (or PC/iPad App). For more information on
configuration and usage of Dante Controller, please visit Audinate’s website at: https://www.audinate.com/products/software/dante-controller.
Note: Dig In L and Dig In R are separate channels of audio. They can be used, for example, if two dierent audio programs are desired, Dig In L
could be routed to one loop and Dig In R routed to the other loop. The mixer functions are used to route each channel to the desired loop. See the
section “Input Configuration” for more information about configuring these inputs.
Format
Sample Rate: 44.1 & 48 kHz
Bit Depth: 24 bits
Dante network
Connect via Ethernet
Set the Dante ethernet settings in the server to
• Obtain an IP address automatically
• Obtain DNS server address automatically
Dante Controller
All Dante device setup and source routing is performed through Dante Controller. This includes the IP Address and Dante Device Name that
appear in the loop amplifier “Net Info” screen. If a name change is desired, or the Dante IP Address needs to be set, refer to Dante Controller
documentation. To view the amplifier settings configured by Dante Controller, go to “System Configuration - Tech Tools - Net Info” and scroll down
to the Dante section.
The Dante jack LED indicators operate dierently than standard ethernet jack LEDs. See illustration below.
Dante jack LED indication (this diers from standard ethernet).
OFF
No Network Link
OFF
Green Amber
ON
10 MBps link detected
(not supported)
OFF
Green Amber
ON
100 MBps link detected
(supported)
ON
Green Amber
BLINKING
Network Activity
Green Amber
Dante Jack Network LED indicators
A591
OFF
No Network Link
OFF
Green Amber
ON
10 MBps link detected
(not supported)
OFF
Green Amber
ON
100 MBps link detected
(supported)
ON
Green Amber
BLINKING
Network Activity
Green Amber
Dante Jack Network LED indicators
A591

DL107, DL207 and DL210 2.0 Digi-Loop™ DSP Induction Loop Amplifiers
10
Analog Audio Input Connections
The DL107/207 amplifiers have an XLR Mic/Line input for accepting the balanced output of a microphone or mixer. These models also have a
phoenix-block line input. The DL210 only has phoenix-block line level inputs. The following is how the phoenix blocks would be wired.
shield (gnd)
red
shield (gnd)
L+
white
RCA
R+
shield (gnd)
L+
shield (gnd)
R+
red
white
3.5mm
L-
L+
XLR
common
(gnd)
mono left
1kΩ,1/8 W
Resistors common
(gnd)
L+ L+ L-
shield
(gnd)
L+ R+
shields
(gnd)
No
L-
L+
R-
R+
shields
(gnd)
A658
Unbalanced stereo
summed
on mono channel
Unbalanced mono on
mono channel
Balanced mono on
mono channel
DL 107/207 (207 shown)
DL210
Ye s
Unbalanced Sources Balanced Sources
Mic/Line Input
(XLR balanced)
Line Input
(Phoenix Block)
Loop Fault Relay Overview
The loop fault relay provides a NO (normally open) and NC (normally closed) contact closure for triggering an external device or control sys-
tem when a fault (shorted or open loop) occurs. The external control system can then send a text or email, initiate an alarm, or turn on a light
to let personnel know that a loop fault has occurred.

DL107, DL207 and DL210 2.0 Digi-Loop™ DSP Induction Loop Amplifiers
11
The DL107/207 models provide a loop fault relay through a 3-position terminal block connection on the rear of the amplifier.
Pin 1 - NC (Normally Closed)
Pin 2 - Relay GND
Pin 3 - NO (Normally Open)
DL210 2.0 Loop Fault Relay connections
The DL210 models provide the relay as part of the “RS-232” DB-9 connector. The relay and RS-232 use separate pins and are completely isolated.
A597
232 RECEIVE DATA
232 REQUEST TO SEND (NOT USED)
TRANSMIT DATA
232 CLEAR TO SEND (NOT USED)
232 RING INDICATOR (NOT USED)
232 SIGNAL GROUND
CHASSIS GROUND (NOT USED)
1
2
4
3
5
6
7
8
9
LOOP FAULT NO
LOOP FAULT GND
LOOP FAULT NC
1
2
4
3
5
6
7
8
9
2
4
3
5
6
7
8
9
DB-9 CONNECTOR 1 (Male) DB-9 CONNECTOR 2 (Male)
CABLE SHEILD
1
3rd-Party Control Cable
1
2
4
3
5
6
7
8
9
DB-9 CONNECTOR (Male)
CABLE SHEILD
Loop Fault Detection Wiring
LOOP FAULT NO
LOOP FAULT GND
LOOP FAULT NC
Trigger Input on 3rd Party Device
Trigger Input on 3rd Party Device
Trigger Input or Chassis GND
on 3rd Party Device
Loop Amplier
DB-9 Jack
3rd-Party Control System
DB-9 Jack
Loop Amplier
DB-9 Jack
RS-232:
Pin 2 - Receive
Pin 3 - Transmit
Pin 5 - Signal GND
Loop Fault:
Pin 1 - Loop Fault NO
Pin 4 - Ground
Pin 6 - Loop Fault NC
Loop Wire Selection
To select the proper wire for the loop(s), refer to the following chart. Wire resistance of each loop needs to be 0.5 - 3.0 Ω as required by the
amplifier.
Wire type AWG / (CSA)
DCΩper
1000 ft
(305 m)
Max length
Approx ft (m)
Min length
Approx ft (m)
Single
conductor
18 (0.82 mm2)6.4 234 (71 m) 78 (24 m)
16 (1.3 mm2)4.2 360 (110 m) 120 (37 m)
14 (1.9 mm2)2.4 630 (192 m) 210 (64 m)
12 (3.3 mm2)1.5 1000 (305 m) 333 (101 m)
10 (5.3 mm2)1.0 1500 (457 m) 500 (152 m)
Flat 3/4”
copper ~14 (1.9 mm2)2.4 630 (192 m) 210 (64 m)
Powering Up
Connect the inputs and outputs as desired (referring to the last section). Make sure the loop wire resistance measures 0.5Ω - 3Ω. Connect the IEC
power cable supplied, and power up the amplifier using the switch on the back panel.

DL107, DL207 and DL210 2.0 Digi-Loop™ DSP Induction Loop Amplifiers
12
Initial Conditions
The amplifier, out of the box, powers up with factory settings according to Table 1 and Table 2.
No input selection is necessary for an output to be heard if the source is connected to any of the inputs.
All inputs are initially routed to the loop outputs at a gain setting of -12 dB.
Initial INPUT Settings
Input Name Type Settings
1 & 2 Dig L/Dig R Dante -
3 & 4 Input 1/2 Mic/line, balanced or unbalanced Line level, -10 dBU, phantom power
OFF
5 & 6 Line 1/2 Unbalanced line Line level, -10 dBU
770-100V 70/100 volt Level: 25 Vrms
Initial OUTPUT Settings
Output Name Mode Settings
1Loop A DL107: Single Loop
DL207/DL210: Dual Loop
all inputs are routed to this loop at
-12 dB
2Loop B DL107: Single Loop
DL207/DL210: Dual Loop
all inputs are routed to this loop at
-12 dB
3Line A mirrors analog input 1
4Line B mirrors analog input 2
Loop Termination Warnings
After powering up, the unit will test the loop resistance. If the loop has not been termianted, or has an open circuit, a warning will pop up that the
“Amplifier has shut down”. Push the “Adjust” button in to dismiss the warning. The Home Page loop status appears indicating “FAULT”. Periodically
the previous warning pop up will reappear, requiring the operator to press enter again.
If this happens the loop wire resistance must be fixed. If the outputs are now terminated with the proper resistance, the amplifier will not
automatically reset to operational status. The amplifier must be rebooted.
If a loop is disconnected from the amplifier, a warning will not come up. If the amplifier is rebooted, the warning will now appear.
To avoid warnings due to an open circuit, terminate the unused loop outputs with a resistor such as a 1Ω, 100 Watt resistor or similar.
Note: the amplifier runs a loop test each time it is powered up. So to recover from a fault condition the amplifier must be turned OFF then ON
again.

DL107, DL207 and DL210 2.0 Digi-Loop™ DSP Induction Loop Amplifiers
13
3. Checking and updating firmware
To check the FIRMWARE VERSION on the amplifier
By the time the amplifier is to be installed, the firmware may be out of date. The amplifier will not always arrive with the latest firmware version
either. For best performance it is highly recommended to check & upgrade the firmware.
There are two ways to view the current firmware version on the unit:
1. Front LCD - During boot-up
Power ON the amplifier and watch the LCD screen. The firmware version is displayed after the ‘w” logo is displayed, and before the loop
status check and output VU meters are displayed.
2. Front LCD - Version Info Screen
If the amplifier is already powered ON, it is easy to view the firmware version without shutting the amp OFF.
Using the LCD Menu control knob, navigate to System Configuration - Tech Tools - Version. The current version is displayed by “CPU:”.
To UPDATE THE FIRMWARE on the amplifier
If a newer version of firmware exists on our website, use the steps listed on the firmware download page to upgrade the firmware in the
amplifier.
There are two version of firmware - one for the 210 models and another for the 107/207 models. Take care to download the correct version!

DL107, DL207 and DL210 2.0 Digi-Loop™ DSP Induction Loop Amplifiers
14
4. Installing and configuring the PC App
The PC App is used to configure and commission the amplifier.
When configuring the amplifier, the ethernet connection is recommended for best performance (crossover cable required).
The ethernet connection cannot be used for firmware updates.
The USB port can be used with the PC App, but performance may be limited.
The USB port must be used for firmware updates.
Hardware Requirements:
Desktop/Laptop Computer Windows PC. Mac PC not supported.
Mobile Device Windows Surface Tablet.
iPad, iPad Mini and Android not supported.
Operating System Compatibility Windows XP
Windows Vista
Windows 7
Windows 8
Windows 10
Microsoft .NET 4.0.30319 minimum.
Ethernet 10/100 GB
Standard RJ-45 jack.
USB 1.1
2.0 (12 MBs high speed)
3.0 (5 GBs super speed); standard “B” jack.
To install the PC App
1. Download the PC App by visiting our website www.williamssound.com and browse to Support - Software
2. Follow the instructions on the software download page to install the PC App.
-When the installation completes it will create this icon in the programs/apps directory:

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a. Ethernet Control Setup
A crossover ethernet cable must be used when directly connecting a PC to the amplifier.
Before the PC App can be used, an IP Address must be assigned to the amplifier using the front LCD menu. The PC must have it’s own unique IP
address on the same subnet. Then the IP Address of the amplifier needs to be entered into the PC App.
1. Set an IP Address in the amplifier.
Using the front LCD menu on the amplifier, navigate to System Configuration - Ethernet.
Fill in the settings below.
• Static IP: Yes
• IP Address: e.g., 192.168.100.86 (doesn’t have to be this specific address)
• Subnet: 255.255.255.0
• Telnet Port: 23
2. Set the networking properties on the computer to an unused static IP Address.
The static IP should be in the same subnet used in step 1. For this example, set the IP Address to 192.168.100.128. In Windows 10 this is
configured under Network & Internet Settings - Ethernet - Change Adapter Options - (choose ethernet card) - (TCP/IPv4) Properties.

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3. Set the amplifier IP Address in the PC App.
i. Select AmpModel from the dropdown list (e.g., DL107, DL207, DL210 or DL210_20).
ii. Set the AmpConnection to”Ethernet”
iii. Set ConnectAction to “GetMixerState”.
iv. Set IP Address to the amplifier’s IP Address (from step 1).
4. Click the amplifier “Connect” icon on the top left of the PC App Toolbar.
When the computer connects to the amplifier, the symbol will turn Green. If it cannot connect, it will turn Red. The sliders should move and the
VU Meters should “pulse”, indicating that the computer has pulled the current state information from the amplifier.
Amp symbol before connection attempt: Turns GREEN when connected: Turns RED if cannot connect:
5. If the symbol turned GREEN, you can now use the PC App.
Note: Under Ethernet control, the amplifier does not update the input levels adjusted by the App, until another function is carried out, such as
pressing the Enter button or moving to another menu.
b. USB Control Setup
1. Connect the computer to the amplifier with a standard USB cable.
2. Open the PC Mixer App on the computer.
3. Under the settings tab icon on the top toolbar, set ”AmpConnection” to “USB” and “ConnectAction” to
“GetMixerState”.
4. Power ON the amplifier.
5. Click the amplifier “Connect” icon on the top left of the PC App Toolbar.
When the computer connects to the amplifier, the symbol will turn Green. If it cannot connect, it will turn Red. The sliders should move and the
VU Meters should “pulse”, indicating that the computer has pulled the current state information from the amplifier.
Amp symbol before connection attempt: Turns GREEN when connected: Turns RED if cannot connect:

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6. If the symbol turned GREEN, the PC App is ready to use.
Note: If both channels aren’t terminated with at least 0.5 ohms, the amplifier icon in the PC App may not turn green when trying to connect. If this
happens you will need to fix the problem, disconnect the USB cord between the amplifier and computer, reboot the amplifier, reconnect the USB
Cord and try to connect again.
If the PC App has detected a fault, such as Loop B not being terminated with at lest 0.5 ohms, even when the amp is terminated and rebooted
the PC App will still indicate “Loop B: Error” even though the amplifier does not indicate this fault. If this happens, perform a loop test from the
toolbar to clear this condition. If the PC App still indicates “Loop B: Error” the PC App will need to be closed and re-opened to pull the new state
information from the amplifier.
5. Calibrating & commissioning the loop amplifier
The loop amplifier must be calibrated to the field strength of the loop or the VU Meters and settings adjustments
will not be accurate.
An external source (such as a test tone generator) CANNOT BE USED to calibrate the amplifier. The internal test
tone generator MUST be used.
Calibration and commissioning are necessary to meet IEC Spec 60118-4.
Equipment required: Field Strength Meter, USB cable (or crossover ethernet cable), and windows-based PC.
Requirements:
• a Background Noise Check was performed with a field strength meter
• a Test Loop was verified with the amplifier connected
• the permanent loop wire(s) measure 0.5-3.0 ohms (including lead wires)
• the latest firmware is loaded in the amplifer
• the latest PC App is installed on the PC
1. Start communication between the PC App and Amplifier.
Refer to “USB Control Setup” for this example.
2. Load preset factory defaults for Loop type.
This clears previous settings and loads preconfigured factory settings for the loop type. The loop type is either a Single Loop, Dual Loop or
Phased Array. The DL210 models oer a “Speaker + Loop” preset and this is used for a single loop. DL107/207 models have a “Single Loop”
preset.

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3. Calibrate the amplifier to a field strength of 400 mA/m at 1 kHz, with FSM 5 ft above floor.
a. Set FSM switches - top button depressed out “Norm”, bottom button pushed in “0dB”.
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In (0dB)
Out (Norm)
b. Set or hold the FSM at 5ft above the floor, in the center of the loop or array.
c. Open the Calibration Window in the PC App.
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In (0dB)
Out (Norm)
d. Set the Frequency to 1 kHz, and adjust the volume level until the Field Strength Meter reads 0 dB.
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0 dB
Set at 1kHz
Adjust volume
e. For Phased-Array only: Switch to Loop B (by clicking on the “A” button) and turn up the volume until the current for Loop B
is close to Loop A (within 0.2A).
The loop amplifier is now calibrated. This is the 0 dB calibrated reference point that the EQ adjustments will reference. It
also makes the Input and Output VU Meters accurate.
The volume adjustment in the Calibration Window (test tone) should not be changed after this. Doing this will
take the amplifier out of calibration. The EQ adjustments in the next step have their own level adjustment controls.
If more output is desired from the loop, the Source volume should be adjusted first, then the Input Sliders, then the Output
Eects AGC Control, in that order.

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4. Equalize other frequencies to match the calibration point.
Make sure the switches on the field strength meter are in same position as they were for calibration.
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Step b
Bass=100 Hz,
Mid=500 Hz,
Treble=2500 Hz,
Metal Comp=5000 Hz
Step c
Return to the Calibration Window
and set the test tone for 100 Hz
(the rst frequency to be equalized).
Step d
Return to the Eects Window
and adjust theEQ volume (dB) until
the eld strength meter reads 0 dB.
Step e
Repeat Steps c & d for the next frequency,
(i.e. 500 Hz). Repeat c & d until each of the
frequencies have been equalized to 0 dB.
Step a
Open the
Eects Window
a. Open the output EQ settings by clicking on the FX button in the Calibration Window.
b. Set 4 equalizer frequencies, Bass=100 Hz, Mid=500 Hz, Treble=2500Hz, Metal Comp at 5000Hz.
c. Return to the Calibration Window and set the test tone to 100 Hz. The amplifier is now generating 100 Hz in the loop.
d. Go to the Output Eects Window and adjust the dB level until the field strength meter reads 0 dB. The loop is now equalized for 100 Hz.
e. Repeat steps c & d for the next frequency (i.e. 500 Hz) and continue until each of the frequencies has been adjusted to 0 dB as measured by
the field strength meter.
5. Test with an appropriate audio source (DO NOT USE an external test tone generator).
a. Connect a source such as an MP3 player or smartphone to the Line 1 input.
b. With music playing, observe the Loop Output VU meters on the PC App. They should be peaking around 0 dB.
c. If the output level is not sucient, adjust the Source Volume up.
d. If the output level is still not sucient, adjust the Input Slider up.
e. If the output is still not sucient, or if the performance is too dynamic, go into the Output Eects Window and adjust the AGC level up to about
5.
DO NOT go back into the calibration window and adjust the level. This will take the amplifier out of calibration!

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6. Save configuration settings to a file
a. Use the Save icon in the PC App
b. Save the file with the project name in the file name.
c. Do not turn o the amplifier for at least 30 seconds after saving settings.
7. Optional - lock amplifier with a password.
a. Using the front dial on the amplifier, navigate to System Configuration - Security - Set configuration PW.
b. Record the password somewhere for future reference.
Note this does not prevent the PC App from working - it just protects the unit from being tampered with through the front LCD Menu.
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Save configuration settings to a file