Williams Sound Digi-Loop DL107 NET D, Digi-Loop DL207 NET D, Digi-Loop DL207 NET, Digi-Loop DL210 NET D 2.0, Digi-Loop DL210 NET 2.0 Installation Manual

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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

DL107 NET, DL107 NET D

INSTALLATION MANUAL

DL207 NET, DL207 NET D

DL210 NET 2.0, DL210 NET D 2.0

MAN 202H

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DL107, DL207 and DL210 2.0 Digi-Loop™ DSP Induction Loop Ampliﬁers

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.

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DL107, DL207 and DL210 2.0 Digi-Loop™ DSP Induction Loop Ampliﬁers

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.

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DL107, DL207 and DL210 2.0 Digi-Loop™ DSP Induction Loop Ampliﬁers

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.

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:

1 Ampliﬁer overview Describes the purpose of this manual, amp models & features, and basic

commissioning steps

2 Getting started: Connecting the

Ampliﬁer

3 Checking and updating Firmware Checking version, downloading and upgrading ﬁrmware

4 Installing the PC App Downloading and installing the PC App

5 Calibrating and Commissioning Conﬁguring the ampliﬁer to work with the loop wires

6 Appendicies Maintenance and cleaning.

Rear panel jacks, typical connections, do’s and don’ts

Resources. Front Panel Controls Reference PC App Reference Speciﬁcations Warranty

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DL107, DL207 and DL210 2.0 Digi-Loop™ DSP Induction Loop Ampliﬁers

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 1 1 1 1 1 1

Input: Dante™ 1 1 1

Output: Loop

1 1

Loop Output Power: 9.5 Arms/13.4

Apk

16.1 Vrms/22.8 Vpk

Output: Line 1 1 1 1 2 2

Output: Headphone 1 1 1 1 1 1

Output: Speaker 1 (swap loop A) 1 (swap loop A)

Network Control x x x x x x

9.5 Arms/13.4 Apk

16.1 Vrms/22.8 Vpk

(dual or phased

array)

9.5 Arms/13.4 Apk

16.1 Vrms/22.8 Vpk

(dual or phased

array)

9.5 Arms/13.4 Apk

16.1 Vrms/22.8 Vpk

(dual or phased

array)

12 Arms/17 Apk

33.3 Vrms/47.6 Vpk

(dual or phased

array)

12 Arms/17 Apk

33.3 Vrms/47.6 Vpk

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)

• 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

• 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)

• Standard 19” rack mount:

1RU: DL107, DL207

2 RU: DL210 2.0

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DL107, DL207 and DL210 2.0 Digi-Loop™ DSP Induction Loop Ampliﬁers

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.

NETWORK

DANTE

AVAILABLE ON

NET-D

MODELS ONLY

DANTE

iPAD OR WINDOWS TABLET WITH WI-FI

USB

FIRMWARE

UPDATES

DIRECT

CONTROL

with PC

ETHERNET

ONLY FOR CONTROL.

FIRMWARE

CANNOT BE

UPDATED THROUGH

ETHERNET.

ROUTER

TO RECORDING

EQUIPMENT

FROM COMMERCIAL

SPEAKER SYSTEM

FIRMWARE UPDATES CANNOT BE DONE THROUGH ETHERNET

FOR IPAD/PC APP CONTROL ONLY

ETHERNET

INDUCTION LOOP

(2nd loop output

available on

DL207/210

models only)

EXTERNAL CONTROL

SYSTEM, ETC.

AUDIO FROM MIXER,

MICROPHONE, ETC.

LINE-LEVEL AUDIO

FROM MP3 PLAYER,

MIXER, ETC.

NOTE: LEAD WIRES

(FROM AMP TO LOOP)

SHOULD ALWAYS BE

TWISTED

TO MINIMIZE EMI

INDUCTION LOOP

Page 7

Rear connectors

Front LCD Menu (GUI) display Headphone jack

Menu (GUI) display control knob

DL107/207

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

Model &

Serial

numbers

Menu (GUI) display control knob

DL107/207

DL107

access

Front LCD - Menu (GUI) Display

Menu (GUI) display control knob Headphone jack

Rear Panel (DL107 NET D shown)

DL107

DL107, DL207 and DL210 2.0 Digi-Loop™ DSP Induction Loop Ampliﬁers

Dante jack

(“D” models only)

Loop fault

relay

USB

jack

Ethernet

Rear Panel (DL207 NET D shown)

DL 207

Dante jack

(“D” models only)

Loop fault

relay

Rear Panel (DL210 NET D 2.0 shown)

USB

jack

Ethernet

jack

Mic/Line

level

inputs

Mic/Line

level

inputs

Line level

input

Line level input

Spkr level

input

Spkr level

input

Line

level

output

Line

level

output

Loop

output

outputs

Loop

Model &

Serial

numbers

Model &

Serial

numbers

Power

switch

Power switch

Line cord

connection

Line cord

connection

Fuse access

Ethernet

jack

Dante

jack

(”D”

model

only)

RS-232 & Fault Relay jack

USB jack

Mic/Line

level

inputs

Line level

inputs

Speaker

level

input

Model & Serial numbers

Line level outputs

Loop outputs

Exhaust

Fan

Power

Switch

Line cord connection

Fuse

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DL107, DL207 and DL210 2.0 Digi-Loop™ DSP Induction Loop Ampliﬁers

The following table provides a quick reference to each connector’s use and conﬁguration adjustments.

Input Connector Conﬁguration/Control

Mic/Line

(balanced or unbalanced)

Unbalanced Line RCA -10 dBV

70-100 Volt terminal block -

Dante™ RJ-45 -

Control Connector Purpose

Ethernet RJ-45

USB USB-B

(versions 1.1, 2.0 or 3.0 supported)

RS-232 DB-9 loop fault relay output

Output Connector x

Line level

Loop

Speaker terminal block output A (conﬁgurable) 125 W @ 8Ω

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

Control and monitoring over the network

using PC App or MLM

Firmware Updates, Control by PC App

loop-through of mic/line inputs 1 & 2

+4 dBU, balanced or unbalanced

12 Arms/17 Apk,

33Vrms/47.1 Vpk,

0.5 to 3.0 Ω dc

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.

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DL107, DL207 and DL210 2.0 Digi-Loop™ DSP Induction Loop Ampliﬁers

(not supported)

100 MBps link detected

(supported)

Green Amber

BLINKING

Network Activity

Green Amber

Dante Jack Network LED indicators

BLINKING

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

Green Amber

No Network Link

OFF

Green Amber

10 MBps link detected

OFF

Green Amber

100 MBps link detected

(supported)

Green Amber

Network Activity

Page 10

DL107, DL207 and DL210 2.0 Digi-Loop™ DSP Induction Loop Ampliﬁers

DL 107/207 (207 shown)

DL210

Ye s

Mic/Line Input

(XLR balanced)

Line Input (Phoenix Block)

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.

Unbalanced stereo summed on mono channel

1kΩ,1/8 W Resistors

L+ R+

Unbalanced Sources

RCA

3.5mm

shields (gnd)

Unbalanced mono on mono channel

L+

shield (gnd)

L+

white

red

white

shield (gnd)

R+

L+

shield (gnd)

Balanced mono on mono channel

L+ L-

common

(gnd)

Balanced Sources

XLR

mono left

L+

shields (gnd)

LR-

R+

L+

common (gnd)

L-

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 system 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.

Page 11

DL107, DL207 and DL210 2.0 Digi-Loop™ DSP Induction Loop Ampliﬁers

232 REQUEST TO SEND (NOT USED)

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.

LOOP FAULT NO LOOP FAULT NC

232 RECEIVE DATA

TRANSMIT DATA

232 CLEAR TO SEND (NOT USED)

LOOP FAULT GND

232 RING INDICATOR (NOT USED)

232 SIGNAL GROUND

CHASSIS GROUND (NOT USED)

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)

18 (0.82 mm2) 6.4 234 (71 m) 78 (24 m)

Single

conductor

Flat 3/4”

copper

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)

~14 (1.9 mm2) 2.4 630 (192 m) 210 (64 m)

DCΩ per

1000 ft

(305 m)

Max length

Approx ft (m)

Min length

Approx ft (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.

Page 12

DL107, DL207 and DL210 2.0 Digi-Loop™ DSP Induction Loop Ampliﬁers

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

3 & 4

5 & 6

Initial OUTPUT Settings

Output Name Mode Settings

Dig L/Dig R Dante -

Input 1/2 Mic/line, balanced or unbalanced Line level, -10 dBU, phantom power

OFF

Line 1/2 Unbalanced line Line level, -10 dBU

70-100V 70/100 volt Level: 25 Vrms

Loop A DL107: Single Loop

DL207/DL210: Dual Loop

Loop B DL107: Single Loop

DL207/DL210: Dual Loop

all inputs are routed to this loop at

-12 dB

all inputs are routed to this loop at

-12 dB

Line A mirrors analog input 1

Line 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.

Page 13

DL107, DL207 and DL210 2.0 Digi-Loop™ DSP Induction Loop Ampliﬁers

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!

Page 14

DL107, DL207 and DL210 2.0 Digi-Loop™ DSP Induction Loop Ampliﬁers

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:

Page 15

DL107, DL207 and DL210 2.0 Digi-Loop™ DSP Induction Loop Ampliﬁers

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.

Page 16

DL107, DL207 and DL210 2.0 Digi-Loop™ DSP Induction Loop Ampliﬁers

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.

Amp symbol before connection attempt: Turns GREEN when connected: Turns RED if cannot connect:

Page 17

DL107, DL207 and DL210 2.0 Digi-Loop™ DSP Induction Loop Ampliﬁers

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.

Page 18

DL107, DL207 and DL210 2.0 Digi-Loop™ DSP Induction Loop Ampliﬁers

In (0dB)

Out (Norm)

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”.

Out (Norm)

In (0dB)

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.

d. Set the Frequency to 1 kHz, and adjust the volume level until the Field Strength Meter reads 0 dB.

Adjust volume

Set at 1kHz

0 dB

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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DL107, DL207 and DL210 2.0 Digi-Loop™ DSP Induction Loop Ampliﬁers

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.

Step a Open the Eects Window

Step d Return to the Eects Window and adjust theEQ volume (dB) until the eld strength meter reads 0 dB.

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 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.

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.

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

DO NOT go back into the calibration window and adjust the level. This will take the ampliﬁer out of calibration!

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DL107, DL207 and DL210 2.0 Digi-Loop™ DSP Induction Loop Ampliﬁers

Save configuration settings to a file

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.

Page 21

DL107, DL207 and DL210 2.0 Digi-Loop™ DSP Induction Loop Ampliﬁers

6. Appendices

a. Maintenance & cleaning

The Front Display should be cleaned with a clean, damp microﬁber cloth only. This will prolong the life and legibility of the screen. To prevent scratching, do not use Windex or any other type of cleaner or cloth/paper towel on the screen.

The case can be blown out with compressed air and the outside wiped down with a damp cloth. Windex can be used on the case, as long as it is

not used on the screen.

b. General Troubleshooting

Problem Solution

- Check to see that the loop ampliﬁer is on.

- Make sure the input source is on/playing.

No Sound

Interference / hum / background noise

Announcements not heard on 70-100v input

Distorted audio

PC App not controlling the ampliﬁer

- On the “Loop Status” screen, the horizontal bar graph should be pulsing with the audio from the input source.

- Plug in headphones and make sure the input source is producing audio.

- Check loop connections - are both loop ends connected ﬁrmly and are the cable ends properly terminated with exposed wire in the contacts?

- Are hearing aids/receivers on/set correctly?

- Turn the loop system o and check to see if background noise remains. If it does, the noise may be created by other electrical systems and picked up by the loop. Turn o nearby appliances to ﬁnd the source of the interference.

- If a microphone is connected to the microphone input, try shutting o the microphone or unplugging it. If the noise goes away, turn it back on and try reducing the microphone input gain.

- Is the announcement source on and working? Can announcements be heard on the 70-100 V speakers?

- Check connections to the ampliﬁer. Is the announcement source connected to the 70-100 V input?

- If the announcement source is properly connected, and audio is very low, try increasing the input gain on the loop ampliﬁer, or the output gain of the 70-100 V source.

- With the 70-100 V input selected for the headphone jack, listen with a pair of headphones and verify that the input is receiving audio

- Is the input level set correctly in the ampliﬁer? (i.e. Mic/Line level, mic phantom power on/o, etc.)

- Is the source level too high?

- Is the IP address set correctly in the ampliﬁer? (System Conﬁguration-Tech Tools-Net Info) Note: the ampliﬁer needs to be rebooted for the IP address to take eect.

- Is the IP address assigned in the ampliﬁer the same as the IP Address entered into the iPad/PC App?

- Is the correct ampliﬁer model selected in the iPad/PC App?

- Is the ampliﬁer communicating on the network? Can you ping the ampliﬁer from a PC on the network? If not, check

the ethernet path (cables, switches, router, etc).

c. Troubleshooting a ﬁrmware update failure

If the installation fails a dialog box will comes up like this:

Generally, ﬁrmware updates fail because a connection between the computer and ampliﬁer could not be established. This sometimes happens if either USB port was previously in use or connected to a device.

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DL107, DL207 and DL210 2.0 Digi-Loop™ DSP Induction Loop Ampliﬁers

To re-install the ﬁrmware, follow these instructions in sequence.

1. Unplug the ethernet and USB cables from the ampliﬁer and computer.

2. Power OFF the ampliﬁer.

3. Power OFF the computer. If the computer is already powered up, shut it down. Then power it on. (Do not just reboot). This clears any previously established telnet connections and makes the USB port ready for connection. Wait for the computer to completely boot into Windows.

4. Turn on the ampliﬁer and wait for it to fully boot, showing the VU meters on the front LCD display.

5. Connect the USB cable from the computer to the amplifer.

6. Double-click on the ﬁrmware exe ﬁle to reinstall the ﬁrmware.

d. PC App Detail

PC APP TOOLBAR

Connect to

Ampliﬁer

Save

Conﬁg

Application Settings

including

Communication Setup

Tsbt

Load

Presets

Conﬁg

Reset Levels

Calibration

Priority

Input

Selection

Loop

Test

Ampliﬁer

Reset

Network Info

(Ethernet and

Full-Screen

View

Dante)

System Info including App and Firmware Versions

Connect to Ampliﬁer - This symbol establishes connection between the ampliﬁer and the PC. When connected, the indicator turns green.

Save Conﬁg - Stores all of the system settings in a ﬁle.

We recommend saving the settings in a ﬁle in case of power outage or other catastrophic failure. Settings should be saved immediately after the system is calibrated.

Load Conﬁg - Loads saved system settings from a ﬁle.

Tsbt Presets - Resets the ampliﬁer to factory default settings or user saved presets.

Application Settings - This is where communication between the ampliﬁer and the PC is set up. You can also change the quality of the

graphics or run a demo of the application - with simulated VU meter activity.

Reset Levels - This will reset all of the slider and rotary dial levels to -INF.

Calibration - This opens the calibration window, which provides a convenient way to calibrate the loop by generating a test tone (using

the ampliﬁer’s internal tone generator), adjusting the frequency and output level, and measuring the signal level of the loop with a ﬁeldstrength meter.

Note: The ﬁeld strength meter can be purchased through Williams Sound, model PLM FSMP. Please see our website or call us for more information.

Priority Input Selection - Allows selection of an input designated as an override to any/all inputs currently in use. When signal level appears on the priority input, all other outputs are muted until the signal on the priority input is not present for a period of time. This is useful for overhead paging/distributed speaker systems where announcements need to be heard by loop users.

Loop Test - Performs a test on the loop(s) looking for an open or faulty loop.

Ampliﬁer Reset - This resets all settings to factory defaults and re-boots the ampliﬁer.

Full-Screen View - This returns the App to a full-screen view if the window has been re-sized or moved.

Network Info - This shows the Ethernet Network Address settings and Dante™ Network Address settings.

System Info - This shows the currently loaded ﬁrmware versions of: main CPU, DSP chipsets, network driver and bootloader. It also

displays the current PC App version.

Page 23

PC APP MAIN SCREEN

Mix

Gain

Line/

Mic/

Phantom Mic

Select

Input Trim

or ‘Mic Gain’

Input Effects

DL107, DL207 and DL210 2.0 Digi-Loop™ DSP Induction Loop Ampliﬁers

Custom

Mute

Output

Effects

Output Name

Output Gain adjust

Output VU Meter

Overload Indicator

Loop Mode Selection

Output

Input Mute

Input Gain

Loop

Input

VU Meter

Custom Input

Name

Output VU Meters

Amplifier Status Box

Mix Gain - Allows an additional point of control to mix individual inputs as required for each output. (Click on the dial, then slide up/down to adjust)

Line/Mic/Phantom Mic Select - Switches between a Line-level signal, dynamic microphone or 48 V condenser microphone.*

Input Trim - Provides ﬁne trim of the input gain. Caution! It is very important to make sure the appropriate input configuration is set BEFORE plugging

the source into the Input 1 or Input 2 jacks.

Digital In Switch - Switches “Digital In L” and “Digital In R” (inputs follow each other) to either Dante or AES/EBU.

Input Eects/Output Eects - Opens the Input or Output Eects adjustment window.

Input/Output Mute - Mutes the Input or Output without the need to use the slider control. Unmute returns to slider gain level.

Input VU Meter/Output VU Meter/Loop Output VU Meters - Shows the active level of the audio post-adjustment.

Input/Output Gain - Gain adjustment slider control.

Custom Input/Output Name - Provides the ability for a custom name. The jack label is preserved above the custom name.

Loop Modes - Changes the internal conﬁguration of the ampliﬁer to drive the load(s) chosen.

Input/Output Overload Indicators - This light will turn red once an overload condition is reached. It remains red until cleared. Clear the

overload indicator by clicking on it.

Status Message Area - If the ampliﬁer encounters error conditions, a speciﬁc message will be displayed in this area, i.e. if a loop is open.

Page 24

DL107, DL207 and DL210 2.0 Digi-Loop™ DSP Induction Loop Ampliﬁers

0-40dB

INPUT EFFECTS WINDOW

Bass/Mid/Treble Pole Frequency all adjustable 20-20kHz

High Pass Filter toggles between OFF, 31, 62, 125, 500Hz

Pole Freq Gain all adjustable

-INF to +12dB

Compressor Adjustments: Threshold

-INF to 0dB Ratio 1-10 Attack 2-500ms Release 10-2500ms Makeup Gain

Equalizer

Hz (Bass/Mid/Treble Pole Freq) - Sets the center frequency for the gain adjustment of each band. (Click then slide up/down to adjust)

dB (Bass/Mid/Treble Pole Freq Gain Adjust)- Adjusts the amount of gain at the pole frequency. This is adjustable from -96.0 dB to 0.0 dB in 0.5

dB steps.

High Pass Filter

Each push of the button toggles between “OFF”, 31 Hz, 62 Hz, 125 Hz, 500 Hz, and back to OFF.

Compressor

Threshold is the level of incoming signal at which compression takes eect. The Threshold is adjustable from -96.0 dB to 0.0 dB in 0.5 dB steps.

Ratio determines how much compression is applied when it takes eect. The Ratio is adjustable from 1.0:1 (no compression) to 10.0:1 in 0.1

steps.

Attack is the speed at which compression reacts to get to the target level. The Attack is adjustable from 2 ms to 500 ms in 2 ms steps.

Release controls the time that the compressor continues to work after the input signal drops beneath the threshold. Short settings release

the signal quickly, while long release times have the eect of sustaining the signal. The Release is adjustable from 10 ms to 2500ms in 10ms steps.

Makeup Gain is used to bring the overall level of the sound back up, when the overall volume has been reduced by compression. This happens when the threshold is set low and/or the ratio has been set high. The Makeup Gain is adjustable from 0 dB to 40 dB in 0.5 db steps.

Page 25

OUTPUT EFFECTS WINDOW

Bass/Mid/Treble

DL107, DL207 and DL210 2.0 Digi-Loop™ DSP Induction Loop Ampliﬁers

Pole Frequency all adjustable 20Hz - 20 kHz

Metal Compensation adjustable 1kHz - 9kHz

HPF toggles between OFF, 31,62,125,500Hz

LPF toggles between OFF, 16, 8, 6.3 kHz

Output Delay adjustable 0-165 ms

AGC Presets for Music, Voice.

Output eects can be accessed from two dierent places - The “FX” button in the calibration window, or the “FX” button near the output slider.

Equalizer

Hz (Bass/Mid/Treble Pole Freq) - Sets the center frequency for the gain adjustment of each band. dB (Pole Freq Gain Adjust)- Adjusts the amount of gain at the pole frequency chosen. Metal Compensation - Additional parametric gain control to help overcome high-frequency loss caused by metal absorbing energy from the loop.

AGC (Automatic Gain Control)

Once the ampliﬁer has been calibrated for the loop(s), the AGC (when active) will try to maintain that average level of signal to the loop(s) or speaker. For people familiar with traditional AGC, this level is known as the “Target”. There is no target adjustment on the loop ampliﬁer since the target is internally set by calibration.

Presets: Music, Voice, and Custom The presets for Music and Voice are optimized settings for AGC. If more control is desired over the AGC parameters, or a third scenario is required, a Custom Preset can be created and recalled.

Level This dial applies active gain correction up to ±20 dB around the target (the Level “window”). As the dial is turned up, more correction is applied. If the audio level is below the target, up to +20 dB (gain) is applied; above the target, up to -20 dB (attenuation) is applied.

Hold Time is how long AGC remains at the same level when the input signal drops out of the Level Window. The Hold Time adjustable from 1 second to 60 seconds in 1 second steps. For Voice, longer hold times are often used to maintain the gain level when the speaker pauses or stops talking. For Music, shorter hold times are often used since the signal tends to be continuously present.

Attack is the speed at which the gain is boosted when the level of the input signal crosses into the “Level” window. Short settings react to the signal quickly, while long attack times have a lagging eect. When the speaker pauses, too short of an attack can result in “pumping” or “breathing” where the sound gets really loud before returning the desired level.

Release is the speed at which the gain is reduced after the input signal drops out of the “Level” window. Short settings drop the gain quickly, while long release times have the eect of sustaining the signal. Too short of a release can result in missed parts of speech due to the gain dropping o too fast. Too long of a release can result in speech getting muddled or “ringing”.

Output Delay adjusts the timing of the audio at the output. This is useful when audio needs to match video (lip sync), or when amps are chained together in a deep venue where loop timing needs to coincide with delayed speaker arrays.

High Pass Filter- Each push of the button toggles between “OFF”, 31 Hz, 62 Hz, 125 Hz, 500 Hz, and back to OFF. Only use 500 Hz for a speaker. Low Pass Filter - Each push of the button toggles between “OFF”, 16 kHz, 8 kHz, 6.3 kHz and back to OFF. Output Delay - can be adjusted from 0 to 165 ms.

Page 26

DL107, DL207 and DL210 2.0 Digi-Loop™ DSP Induction Loop Ampliﬁers

Status Box. Click inside the box to open the Amplier Status Window.

AMPLIFIER STATUS BOX AND STATUS WINDOW

The status box shows loop status at a glance. For more detail, open the Ampliﬁer Status Window by clicking on the box.

Ampliﬁer Status Window

CALIBRATION WINDOW

The ampliﬁer must be calibrated to the loop(s) before the VU meters will be accurate. The loop system can then be adjusted to meet the frequency response requirements as per IEC 60118-4. For the complete procedure on calibrating the ampliﬁer, please refer to the section “Setup and Calibration Procedure (using a laptop or windows tablet)”. When calibrating a Phased Array, after Loop A has been calibrated with the ﬁeld strength meter, switch to Loop B, and adjust the Oset for Loop B until the Average Current for Loop B matches the average current for Loop A. Then individual test frequencies can be adjusted (i.e. 500 Hz, 1 kHz, 2.5 kHz, etc.) to make the frequency response of the loop meet IEC 60118-4.

Calibration Window (Phased-Array Mode shown)

11.69

1. Click on this button

to switch from

Loop A to Loop

1. Set the test tone at the rst frequency to be measured (i.e. 500 Hz).

2. Click on the FX button to bring up the Output EQ

Note: Average

current

delivered to

Loop A.

Loop A: 11.69 amps @ 1000 Hz

2. Using the current in Loop A as a reference,

3. Set the same frequency as the test tone (i.e. 500 Hz) under the closest lter that applies (i.e. “Bass”).

4. Using the eld strength meter, adjust the level until the FSM reads 0dB (400 mA/m).

5. Close the FX window (return to step 1), set the next test tone, and return to the FX window to adjust the next frequency. Repeat these steps until the last frequency has been adjusted (i.e. 5 kHz).

adjust the oset for the current in Loop B until Loop B is close to Loop A.

When nished, the current for Loop A should be close to the current for Loop B.

To enter a value, double-click on the value in the dial.

Page 27

DL107, DL207 and DL210 2.0 Digi-Loop™ DSP Induction Loop Ampliﬁers

Low Pass

AGC

Filters

Delay

Loop Setup

Input Mixer

Setup

MuteVol

Out 2: Line

Out 1: Loop A

Input Type

Compression

Setup

Name

Setup

MuteVolMuteVol

System Configuration

Output Configuration

Input Configuration

In 1: Mic/Line In 2: Line

Configuration Menu

Load Preset

Headphone MonitorLoop Status

MuteVol

Headphone Source

Setup

MuteVol

Name

Mid

Advanced

LPF

MBPF

HPF

Level

Lo Mid Hi

Presets

Ethernet

Security

Power Save

Static IP

IP Address

Subnet Gateway Telnet Port

Set Password PW Timeout

Delay

Tech Tools

Calibrate

Calibrate:

Frequency

Backlight

Metal Comp

Volume

Version

DL107 Name Amp Temp Reset All

Load Preset

Save Preset Change Name

Advanced

High Pass

Mode

etc...

NET Info

Auto Sleep

Trim Phantom Pwr High Pass

Loop Test

Threshold

Ratio

Attack

Compression

Release

Makeup

Preset

Amount

Hold Time

AGC

Attack

Release

ETHERNET

DANTE

Dante Dev Name

Brightness

Default=Loop A

or DL207 or DL210

Name

Priority In

ThresholdInput

1 2

3 4

565

7a1 7a2 7a3

7b1 7b2 7b3 7b4 7b5

7f1 7f3 7f4 7f5

7d1 7d2

7e1 7e2

7f6

7f1a

7f1b

7f1c

5a1

5a2

5a4

5a3

6c1 6c2

6f1 6f2 6f3 6f4

6f4a

6f4b

6f4c

6f4d

7f2

7f7

6g1

5a3

5a3a

5a3b

5a3c

5a3d

5a3e

6d1

6d2

6d3

6d4

6d5

7f5a

7f5b

7f5c

7e3 7e4

7f1d

7c1 7c2

Threshold

7e5

e. Front LCD Menu

This is a full map of the front menu. Use the numbers next to each box to look up the function in the “Front Screen Menu Tree Detail” section, e.g. “7a1” - “Load Preset”.

Page 28

DL107, DL207 and DL210 2.0 Digi-Loop™ DSP Induction Loop Ampliﬁers

Front LCD Menu (GUI) display Headphone jack

Menu (GUI) display control knob

All aspects of the loop ampliﬁer can be conﬁgured from the front panel GUI.

The on-board menus are navigated and adjusted using a rotary encoder labeled “ADJUST” and by pushing the knob in to “ENTER”.

There are a number of common operations:

To move to the next menu, turn the control clockwise. It might be necessary to cycle through the on-screen options until you get there. Clockwise moves forward; counter-clockwise moves back.

Pressing the control knob in (“ENTER”) moves the selection into that menu or option for further adjustment or options.

To change values: ENTER - ADJUST - ENTER (no escape or undo).

In order to exit a menu or option, select the “BACK” command in the list.

The screen will return to the “Loop Status” menu after a period of time.

Front Panel Controls

2. HEADPHONE MONITOR

The Headphone monitor can be used to listen to any individual source or output, or to listen to adjustments as they are made in the menu. Rotate the knob once to the right to see the Headphone Monitor screen. The vertical bar going through the bar graph represents a reference level of 0 dB. You can change the volume of the headphones or mute the audio from this screen.

2a. Headphone Source

To change the headphone source, enter the Headphone Monitor Setup. Rotate the knob to view the sources. Push the knob in to select the source desired for the headphones.

Front Screen Menu Tree Detail

The entire on-screen menu is accessed by either rotating the control knob to the left or right (to view), or pushing it in (to select).

See the Menu Tree (previous page) for an overview of the entire menu structure.

1. LOOP STATUS

The On-Screen Menu starts, and when it times-out, will return to the “Loop Status” Screen (below). The bars represent the power output of the loop(s), and will pulse with the audio program being broadcasted on the loop (or speaker). The vertical lines going through the bars represent the reference level of 0 dB.

Normal Condition: Loop Fault (shorted or open):

Overtemp (loop impedance out of range):

3. LOAD PRESET

Presets provide the ability to save and recall custom conﬁgurations (all ampliﬁer settings). This is where a preset can be recalled, or “loaded”. To save a Preset, see 7a2.

4. CONFIGURATION MENU

The conﬁguration menu is where most of the ampliﬁer settings and ﬁne-tuning is performed. This menu is where Inputs and Outputs are conﬁgured and system parameters are set up, stored and recalled.

5. INPUT CONFIGURATION

The “Input Conﬁguration” page allows the user to individually select

Page 29

and process the incoming signal for all inputs. It does not route the signal to the outputs. That task is carried out in the “Output Conﬁguration” page under the “Input Mixer”.

From the Home Page (“Loop Status”), turn the ADJUST rotary control clockwise to navigate through the “Headphone Monitor” and “Load Preset” menus, to the “Conﬁguration Menu”. Press ENTER and the selection moves into the Conﬁguration Menu options. ADJUST rotary control clockwise to “Input Conﬁguration” and press ENTER. Each input is separately adjustable and Input 1 is already selected.

This menu shows an input meter for each of the seven inputs and has

three options for the selected input along the bottom: Gain: - press and adjust Mute - press to toggle

Setup - press to enter sub-menu. The available options for each input

are: Name, EQ, Compression, Input Type

5a1. Name

This allows you to name the Input. To change the name, select the

ﬁrst character and rotate the dial to change letters/numbers. When

the character you want is displayed, push the knob in to select that

character and move to the next position. When ﬁnished with the last

character of the name, rotate knob until “OK” is highlighted; then

push the knob in to save the name.

5a2. EQ

Frequency compensation is available via a 3-band equalizer: Lo

Shelf - Mid Sweep - Hi Shelf. The center (or “cuto frequency”)

for each band is chosen under “Advanced Settigns”. The second

screen below shows the level adjustment for each of the bands (low

range highlighted). Rotate the knob until “Advanced Settings” is

highlighted and push the knob in to select. The 3rd screen below

shows the advanced settings, where the center or cuto frequency

for each of the bands is chosen, as well as slope (in dB) for the cuto.

DL107, DL207 and DL210 2.0 Digi-Loop™ DSP Induction Loop Ampliﬁers

5a3. Compression

Compression reduces the dynamic range of the input/output, making soft sounds louder and loud sounds quieter. It has the overall eect of “volume levelling” so the entire program is more intelligible to the listener. Compression has 5 adjustable parameters: Threshold, Ratio, Attack, Release, and Makeup Gain.

5a3a-d. Threshold, Ratio, Attack, Release, Makeup

Threshold is the level of incoming signal at which compression takes eect. The Threshold is adjustable from -96.0 dB to 0.0 dB in 0.5dB steps.

Ratio determines how much compression is applied when it takes eect. The Ratio is adjustable from 1.0:1 (no compression) to 10.0:1 in

0.1 steps.

Attack is the speed at which compression reacts when the input signal crosses the threshold. The Attack is adjustable from -0ms to 500ms in 2ms steps.

Release controls the time that the compressor continues to work after the input signal drops beneath the threshold. Short settings release the signal quickly, while long release times have the eect of sustaining the signal. The Release is adjustable from 0ms to 2500ms in 10ms steps.

Page 30

DL107, DL207 and DL210 2.0 Digi-Loop™ DSP Induction Loop Ampliﬁers

5a4. Input Type

The options for input type vary with the input being set-up. The

options are in the table below.

Input & Type Options

1 & 2

Dante

Hi-pass ﬁlter:

• none

• 31 Hz

• 62 Hz

• 125 Hz

• 500 Hz

3 & 4

Analog Mic/Line

Level:

• -10 dBU

• + 8 dBU

• +4 dBU

• Mic

Trim Control:

• 12 to 39 dB

Phantom Power switch (only active when Mic type selected):

48v Phantom power is automatically turned on when “Microphone” is selected. Before using the microphone, check the owner’s manual speciﬁcations about the use of phantom power.

5 & 6

Unbalanced Line

Level:

• -10 dBU

• -4 dBU

High-Pass Filter:

• none

• 31 Hz

• 62 Hz

• 125 Hz

• 500 Hz

Input & Type Options

70/100 V

Level:

• 25 Vrms

• 70 Vrms

• 100 Vrms

Hi-pass ﬁlter:

• none

• 31 Hz

• 62 Hz

• 125 Hz

• 500 Hz

For example, if setting up the Mic/Line inputs, the 3-pin Phoenix (or XLR) Connector can be programmed to accept various levels: Line +4dBu, Line +8dBu, Line -10 dBV, or Microphone.

Phantom power is automatically turned on when “Microphone” is selected. Before using a microphone, check the owner’s manual speciﬁcations about the use of phantom power.

The “Dig In L (or R)” input adjustments consist of a High Pass Filter Crossover Point (frequency) and Attenuation (dB).

Note: The “Dig In L” and “Dig In R” inputs are independent, and can be “mixed” in the PC App to be routed to separate loops. These inputs can be switched here, or in the PC App (see the section “Using the PC Application” - “PC App Main Screen” “Digital Input Switch”).

5a4a-d. Level, Trim, Phantom Power, High Pass

Level sets the incoming signal level as it applies to the device being used. There are ﬁve possible level settings: Microphone, Line -10 dBU, Line -4 dBU, Line +4 dBU, and Line +8 dBU.

Trim or Gain This setting is dependent on input level and type chosen.

When a Line Level is selected (above), this setting allows Trim to be adjusted. Trim is adjustable in 3 dB increments from -6 dB to +57 dB.

Page 31

DL107, DL207 and DL210 2.0 Digi-Loop™ DSP Induction Loop Ampliﬁers

When Microphone Level is selected (above) this setting allows Gain to be adjusted. Gain is adjustable in 3 dB increments from

+9 dB to +63 dB.

Phantom Power is available as a setting if Microphone Level was

chosen (above). Phantom power can be turned ON or OFF. When

ON it provides a supply voltage of 48v to the microphone.

High Pass is a high-pass ﬁlter with selectable crossover points. The

crossover point can be set to: O, 31 Hz, 62 Hz, 125 Hz or 500 Hz.

6. OUTPUT CONFIGURATION

The “Output Conﬁguration” menu controls the signal passing to

loops (and/or loudspeaker when using the DL210), as well as the line

outputs. The loop outputs have comprehensive control, while the

line level outputs have the ability to change the name and apply EQ.

Each of the outputs can be conﬁgured individually. To set up Output

1, enter “Output Conﬁguration”. Output 1 is the ﬁrst input you can

adjust, so it is already selected. To get to the next input, rotate the

knob to the right.

6a. Name

This allows you to name the Output. To change the name, select the

ﬁrst character and rotate the dial to change letters/numbers. When

the character you want is displayed, push the knob in to select that

character and move to the next position. When ﬁnished with the last

character of the name, rotate knob until “OK” is highlighted; then

push the knob in to save the name.

6b. Input Mixer

The Input Mixer provides level adjustment of each of the inputs

per each output. This is used when one (or more) input(s) may

be louder or softer than the others. You can use the headphones

plugged into the headphone jack to monitor the adjustments.

6c. Filters

Filters provide adjustment for a high pass ﬁlter and low pass ﬁlter crossover frequency.

High Pass Filter has selectable crossover points at: O (None), 31Hz, 62 Hz, 125 Hz, and 500 Hz.

Low Pass Filter has selectable crossover points at: O (None), 16 kHz, 8 kHz, and 6.3 kHz.

6d. AGC

Automatic Gain Control measures the average level of the signal and applies gain reactively to keep the output level constant. It also limits the output power and reduces or eliminates distortion due to clipping that would normally occur without AGC.

6d1-6. AGC Level, Hold Time, Attack, Release

Preset provides default settings for Voice and Music, and only the Amount is adjustable. A Custom preset allows adjustment of the Hold Time, Attack, and Release. Voice is designed for pauses in the audio, where Music is designed for more constant-level sources.

Amount of the AGC can be adjusted to a maximum of 20 dB of around the calibrated level, or “target” level. For people familiar with traditional AGC, the Target is internally set to the calibrated level and is not adjustable, and the Minimum Level (also called “Threshold”) is internally set relative to the calibration target level and is not adjustable. The calibrated “target” level is set in Tech Tools-Calibrate, and this is the level the AGC will attempt to hold.

Hold Time is how long the gain is maintained on signal when the automatic gain settings take eect. In the Custom preset, the Hold Time is adjustable from 1 second to 60 seconds in 1 second steps.

Attack is the speed at which the AGC reacts when the level of the input signal crosses the threshold. Short settings react to the signal quickly, while long attack times have a lagging eect. In the Custom preset, the Attack time is adjustable from 0.5 s to 3.5 s in 0.5 s steps.

Release is the amount of time that the AGC continues to work after the input signal drops beneath the threshold. Short settings release the signal quickly, while long release times have the eect of sustaining the signal. In the Custom preset, the Release time is adjustable from 0.5 s to 3.5 s in 0.5 s steps.

Page 32

DL107, DL207 and DL210 2.0 Digi-Loop™ DSP Induction Loop Ampliﬁers

6e. Delay

Delay is the amount of time between the input signal and the

output signal of the ampliﬁer. This is often useful in a loop system

when a PA system is also being used, so that the audio being

heard through the loop (receiver or hearing aid) matches that of

the PA System speakers. Delay helps to eliminate this “echo”

eect. The Delay is adjustable from 0 ms to 165 ms in 1 ms steps.

6f1-3. EQ - Lo, Mid, Hi

The EQ is a Parametric Equalizer. In the basic settings (second screen,

below), there is a low, mid-band, and high frequency slider that can

be adjusted between -12 dB and 12 dB. To review or change the pole

frequencies, see “6f4a-d. Advanced Settings”, below.

6f4a-d. Advanced Settings - Lo, Mid, Hi, Metal Comp

Advanced Settings provide the ability to change the frequency

point, deﬁne a more speciﬁc numerical dB level, or adjust for

high-frequency metal loss. The Lo, Mid, and Hi ﬁlters can all be

adjusted from 20 Hz to 20kHz, and -12 dB to +12 dB. The Metal

Compensation can be adjusted from 1 kHz to 9kHz, and -12dB to +12

dB.

6g. Loop Mode (model DL207/210 only)

7. SYSTEM CONFIGURATION

7a1-3. Presets - Load Preset, Save Preset, Change Name

Presets allow the user to store all of the current ampliﬁer settings into one easy-to-access Preset, and recall the Preset when needed. These presets are stored in the ampliﬁer (not to be confused with saving or loading a conﬁguration ﬁle, which can only be done through the PC App and is stored on a computer). Three presets are available as a starting point, with defaults, as shown

- Dual-Loop, Phased-Array, and Speaker/Loop. There are also three Custom Presets available - User 1, User 2, and User 3. The User Presets can be renamed. The Dual-Loop, Phased Array and Speaker/Loop Presets cannot be altered or saved; they can only be loaded.

We recommend saving the settings in a User Preset in case of power outage or other catastrophic failure. Settings should be saved immediately after the system is calibrated.

7b1-5. Ethernet

Ethernet provides the ability to specify a static IP Address for the ampliﬁer, or choose dynamic IP addressing (DHCP).

If using DHCP, you must go to a dierent screen in the menu to view the router-assigned IP Address is (See “Tech Tools - Net Info”). The DHCP address is not displayed here.

The ampliﬁer must be set up with an IP Address through the front LCD screen before a networked (or direct-connected) PC can communicate with it. The PC/iPad App won’t work until those settings are made. If using DHCP, the address needs to be veriﬁed through the “Tech Tools-Net Info” screen so this address can be entered into the App, before it will communicate with the ampliﬁer. In order to use the PC/iPad App, the ampliﬁer must be in the same IP Address range, and subnet, as the PC/iPad.

The telnet port defaults to 23 and should not be changed.

• Loop Mode conﬁgures the outputs for dierent loop/speaker combinations. Use Dual-Loop mode to drive a single loop or two single loops (not overlaid, no phase shift).

• Use Phased Array mode for two overlaid loops in a phased array layout (where 90° phase-shifting is needed).

• Use Speaker mode if output A will be used to drive a speaker, and output B will drive a loop or be left open.

Important! If changing from DHCP to a static IP Address, the

ampliﬁer must be powered O, then On, for the new static IP address to take eect!

7c1-2. Priority In

Page 33

DL107, DL207 and DL210 2.0 Digi-Loop™ DSP Induction Loop Ampliﬁers

A priority input overrides the current input in use when signal appears on the priority input. The priority input can be assigned in the LCD menu.

This feature is useful for overhead announcements or paging events.

7d1-2. Security - Set Password, Password Timeout

The Security function allows you to set a password and determine the password timeout delay. The 3-digit access password restricts unauthorized conﬁguration changes. The password cannot be recalled or displayed on the screen. The password timeout delay determines how long the ampliﬁer will display the password entry screen.

The password can be reset by starting with the unit o, pushing the knob in and holding it, turning on the ampliﬁer (while continuing to hold the knob in), and waiting until the screen shows “System Password Cleared” (roughly 20 seconds). A reset to factory defaults will also reset the password, but it will also erase all stored presets and system settings.

7e1-2. Power Save - Backlight, Delay, Brightness, AutoSleep,Threshold

The power save function will turn the ampliﬁer o after a period (Auto Sleep Delay) when the input audio level falls below a speciﬁed level (Threshold).

Backlight can be turned On or O.

Backlight Delay is adjustable in 10 second increments from 10-60 seconds.

Brightness has 10 levels, from 1-10.

Auto Sleep delay is adjustable in 10 minute increments from 10-120

minutes. Default setting is 30 minutes.

Threshold is adjustable from -80 dB to -30 dB in 1 dB steps. Default setting is -80 dB.

7f. Tech Tools

Tech Tools provides the ability to calibrate the ampliﬁer through

use of a test tone, perform an open loop test, check the ﬁrmware version(s) of the ICs, name the ampliﬁer, set a static or dynamic IP address, and reset the ampliﬁer to factory default settings.

7f1a-d. Calibrate - Calibrate, Frequency, Volume, EQ

This is the tool used to calibrate the ampliﬁer to the loop(s). The goal during calibration is for the loop’s performance to meet IEC Speciﬁcation 60118-4.

Calibrate determines which output (Loop A or Loop B) to send the test tone to. If calibrating a phased array, loop A will be done ﬁrst, and loop B second.

Frequency of the test tone can be set to 100 Hz, 500 Hz, 1 kHz,

2.5 kHz, 5 kHz, or Pink Noise. These test tones are used to calibrate the ampliﬁer with the use of a ﬁeld strength meter. If the levels at dierent frequencies need to be adjusted, the Output EQ (see below) can be used to raise or lower the output level at that frequency. On the DL210 2.0, when the ampliﬁer is set to Loop + Speaker mode, Pink Noise can be used to evaluate the speaker response with the entire frequency range driven.

Volume of the test tone can be adjusted from -96 dB to 0 dB in 1 dB steps. Once the loop’s response is adjusted to be nearly ﬂat, volume can be used to adjust the ﬁeld strength to meet the 400 mA/m (per IEC 60118-4) at the measrement point.

EQ is used to during calibration to adjust the loop output level at the test frequencies until the loop output at each frequerncy measures 400mA/m on the ﬁeld strength meter. It is a 4-pole parametric equalizer, with a low-pass, band-pass, high-pass and metal comp ﬁlters. For example, when calibrating to 500 Hz, the Low Pass setting would be adjusted to 500 Hz, and the level (dB) adjusted until the output of the loop is 400mA/m on the ﬁeld strength meter. Then this process is repeated for the next frequency (i.e. 1 kHz, 2.5 kHz, 5 kHz). The Metal Comp ﬁlter allows additional gain to be added if there is metal loss, as metal loss tends to aect the higher frequencies in a loop system.

Page 34

DL107, DL207 and DL210 2.0 Digi-Loop™ DSP Induction Loop Ampliﬁers

7f2. Loop Test

The Loop Test function performs a test algorithm to verify that the load falls within the acceptable range of 0.5 Ω to 3.0 Ω. If the load is outside this range (essentially open or shorted) the test will show “FAULT”.

Note that when running a single loop in dual-loop mode, a “FAULT” is acceptable for the output with no loop connected. However, in this case, the unused loop output should be turned o in the menu.

This tool is to verify that a connected loop does not have an open (break) in it.

7f3. Version

Version is an info screen that shows the ﬁrmware version of the bootloader chip, main processor chip (CPU), DSP chip#1, DSP chip #2 and the ethernet card ﬁrmware version.

of the Dante card, (3) the Dante Card Name, and (4) the Default Dante Card Name. To set the ethernet parameters, see section “7c Ethernet”. To set the DL107/207/210 Name, see the previous section “7g4 DL107/207/210 Name”. To set the Dante parameters, use

Dante Controller. (For more information about installing/using Dante controller, please visit Audinate’s website: https://www.audinate. com/products/software/dante-controller).

7f6. Amp Temp

The temperature of the two ampliﬁer output stages and the CODEC (audio processor chip) can be monitored here. A “zz” by the temperature means that the ampliﬁer is in sleep mode (see “7f. Power Save” for how to adjust when the ampliﬁer goes to sleep).

7f4. DL107/207/210 Name

The DL107/207/210 Name provides the ability to give the ampliﬁer an 8-character name for easy identiﬁcation when connecting to it through the PC App on a network. This name will show up on a drop-down list in the PC App as an available device to connect to. For example, if 5 ampliﬁers were connected on the network, and the third amp was designated for the Ballroom, you could connect to “Ballroom” ampliﬁer to make changes to that amp’s settings.

7f5. NET Info

This screen is for viewing Ethernet and Dante parameters of the ampliﬁer. No changes can be made from this screen.

Four parameters can be viewed here: (1) Ethernet Address and MAC address of the ethernet card, (2) Ethernet Address and MAC address

7f7. Reset All

This resets all of the settings back to factory defaults - except the Ethernet and Dante Network Settings. Any other user-entered information will be lost. The ampliﬁer may need to be rebooted after the factory reset is performed to change states. For example, if the ampliﬁer goes to sleep it may still be asleep until it gets rebooted.

Note: The PC App gives the user the ability to save all settings to a conﬁguration ﬁle for recall later. In this manner, all settings can be erased (here) to bring the ampliﬁer back to a known state (factory defaults) for troubleshooting purposes, etc. Then if desired, a saved conﬁguration can be loaded back into the unit via the PC App. It is good practice to store backup conﬁgurations in a conﬁguration ﬁle (see PC App section) if much work has been done to ﬁnely adjust the ampliﬁer.

Page 35

f. Speciﬁcations

DL107 NET, DL107 NET D, DL207 NET, DL207 NET D

GENERAL

Dimensions

Weight

Color

Fan cooling

Power supply

Heat output @ 120 VAC

1 RU Rackmount, 19” W x 1.75” H x 10” D. Chassis is 17” W.

DL107: 9.2 lbs (4.2 kg) DL207: 9.2 lbs (4.2 kg)

Case: Black, white and blue legends on front, white legends on back. LCD: Backlit Blue.

Variable Speed, Temperature Controlled

Internal, Universal 100-240 VAC, 50/60 Hz, 200 Watt. Fuse: 5 x 20 mm, 5 A, 250 V. AC power plug is IEC 320-C14.

DL107 : Sleep State: 63 BTU/hr; Idle State: 71 BTU/hr; Driving one loop @ 9.5 A: 339 BTU/hr

DL207: Sleep State: 63 BTU/hr; Idle State: 84 BTU/hr; Driving two loops @ 9.5 A each: 638 BTU/hr

DL107, DL207 and DL210 2.0 Digi-Loop™ DSP Induction Loop Ampliﬁers

Ethernet

USB

Environment

Coverage area*

INPUTS

Dante input

Line inputs

Mic/Line inputs

70-100 V input

OUTPUTS

Line outputs

Loop output(s)

Audio output delay

Headphone output

Loop fault relay

Loop output drive voltage

Rated loop output current*

Loop resistance range

AUDIO

Rated load*

Frequency response

Rated loop THD*

(1x) RJ-45; 10-100 MBps.

(1x) standard-B. USB 1.1, 2.0 or 3.0 supported.

0-35° C ( 32-95° F), 0-90% relative humidity,

DL207 (dual output ampliﬁer): 30,000 sq. ft. (2,786 sq. m.) (Perimeter Loops, 3:1 aspect ratio, both outputs driven) 18,000 sq. ft. (1,672 sq. m.) (Perimeter Loops, 1:1 aspect ratio, both outputs driven)

DL107 (single output ampliﬁer): 15,000 sq. ft. (1,393 sq. m.) (Perimeter Loop, 3:1 aspect ratio) 9,000sq. ft. (836 sq. m.) (Perimeter Loop, 1:1 aspect ratio)

On “D” models only. (1x) RJ-45;100 Mbps. Minimum latency: 2 ms. Audio sample rates supported: 44.1, 48 kHz. Resolution: 24 bits.

(1x) 3-position terminal block, 10 kΩ input impedance. Conﬁgurable/accepts -10 dBV, -4 dBu, +4 dBu, +8 dBu, balanced or unbalanced. Level adjustable 0 to -96 dB.

(1x) XLR 3-pin jack. Input impedance: 1.5 kΩ Mic, 10 kΩ Line. Conﬁgurable/Accepts: Mic, Line -10 dBV, Line +4 dBu, or Line +8 dBu, balanced or unbalanced. Phantom supply (24 V).

(1x) 2-position terminal block; high/speaker-level input (accepts 25 V, 70 V or 100 V) from distributed audio/paging systems.

(1x) 3-position terminal block; loop-through of Mic/Line Input 1 & Line Input 2, +4 dBu, Balanced or Unbalanced. The line outputs mirror the audio of the loop output.

(1x) 2-position terminal block per output

Adjustable from 0 to 165 msec

(1x) 1/4” stereo headphone jack, on front of unit. Monitored input or output selectable in menu.

(1x) 3-position terminal block providing NC, NO and Common. Contact rating: 2.0 A @ 30 VDC.

16.1 Vrms (22.8 Vpk) continuous

9.5 A

(13.4 A

rms

0.5 Ω to 3.0 Ω (DC)

0.5 Ω DC with 135 µH inductance

45 Hz to 9.0 kHz ± 2 dB (1 kHz ref.)

<1 % at rated output current (1 kHz sine wave).

per output

pk)

Page 36

DL107, DL207 and DL210 2.0 Digi-Loop™ DSP Induction Loop Ampliﬁers

DL210 NET and DL210 NET D

Dimensions 2 RU Rackmount, 19” W x 3.5” H x 12” D. Chassis is 17” W.

Weight 14.3 lbs (6.5 kg)

Color Case: Black, white and blue legends on front, white legends on back. LCD: Backlit Blue.

Fan cooling

Power supply

Heat output @ 120 VAC

Ethernet (1x) RJ-45; 10-100 MBps.

USB (1x) standard-B. USB 1.1, 2.0 or 3.0 supported.

RS-232/Loop fault relay

Environment 0-35° C ( 32-95° F), 0-90% relative humdity.

Coverage area*

INPUTS

Dante input

Mic/Line inputs

70-100 V input (1x) 2-position terminal block; high/speaker-level input (accepts 25 V, 70 V or 100 V) from distributed audio/paging systems.

OUTPUTS

Line outputs

Loop output(s) (1x) 2-position terminal block per output

Audio output delay Adjustable from 0 to 165 msec

Headphone output (1x) 1/4” stereo headphone jack, on front of unit. Monitored input or output selectable in menu.

Loop fault relay Integrated into RS-232 DB-9 jack. Pin 1=NC, Pin 4=Common and Pin 6=NO. Contact rating: 2.0 A @ 30 VDC.

Loop output drive voltage 33.3 Vrms (47.1 Vpk) continuous

Rated loop output current* 12 A

Loop resistance range 0.5 Ω to 3.0 Ω (DC)

Speaker output

AUDIO

Rated load* 0.5 Ω DC with 135 µH inductance

Loop frequency response 45 Hz to 9.0 kHz ± 2 dB (1 kHz ref.)

Rated loop THD* <1 % at rated output current (1 kHz sine wave).

OTHER

Front controls Front LCD display menu access/adjustment via control button/dial.

Adjustable settings

Internal calibration tools Test tone generator with pink noise, loop current adjustment/matching. See User Manual for details.

Other features

Network control & ﬁrmware

Warranty 5 years

Approvals CE, UL, ULC, FCC, Industry Canada, RoHS, WEEE, CB scheme, RCM

Standards compliance

Variable Speed, Temperature Controlled

Internal, Universal 100-240 VAC, 50/60 Hz, 250 Watt. Fuse: 5 x 20 mm, 5 A, 250 V. AC power plug is IEC 320-C14.

Sleep state: 100 BTU/hr; Idle state: 146 BTU/hr; Driving two loops @ 12 A each: 1,040 BTU/hr

(1x) DB-9 jack. RS-232: Pin 2=Tx, Pin 3=Rx, Pin 5=gnd. Loop fault relay: Pin 1=NC, Pin 4=Common, Pin 6=NO. Relay contact rating: 2.0 A @ 30 VDC.

31,400 sq. ft. (2,917 sq. m.) (Perimeter Loop, 1:1 aspect ratio, both outputs driven) 51,660 sq. ft. (4,800 sq. m.) (Perimeter Loop, 3:1 aspect ratio, both outputs driven)

DL210 NET D 2.0 model only. (1x) RJ-45;100 Mbps. Minimum latency: 2 ms. Audio sample rates supported: 44.1, 48 kHz. Resolution: 24 bits.

(2x) 3-position terminal block, input impedance=1.5 kΩ Mic, 10 kΩ Line. Conﬁgurable/Accepts: Mic, Line -10 dBV, Line +4 dBu, or Line +8 dBu, balanced or unbalanced. Phantom supply (48 V).

(1x) 3-position terminal block; loop-through of Mic/Line Input 1 & Line Input 2, +4 dBu, Balanced or Unbalanced. The line outputs mirror the audio of the loop output.

(17 A

rms

Integrated into Loop Output A terminal block (switchable in menu). 225 Watts x 1 channel @ 4 Ω, 125 Watts x 1 channel @ 8 Ω, (Class D). Frequency response = 20 Hz - 20 kHz, THD=0.07%.

Input mixing, parametric equalization, compression, metal loss compensation, high and low-pass ﬁlters, AGC and audio delay, output levels. See User Manual for adjustment range(s).

Save/load conﬁguration, loop test, priority input selection with adjustable threshold, loop fault relay, open/short and thermal protection.

Function control and calibration by DigiLoop PC App via ethernet (RJ-45). PC App requires Windows 7 or higher. Firmware updates through USB only.

This product is designed to meet the IEC-60118-4 standard when correctly designed, installed and commissioned. Test Speciﬁcations provided to the IEC 62489-1 standard.

per output

pk)

Page 37

DL107, DL207 and DL210 2.0 Digi-Loop™ DSP Induction Loop Ampliﬁers

g. Resources

- Manuals and Speciﬁcations can be downloaded by visiting our website and clicking on Support - Document Library - Manuals (or Speciﬁcations). You may also ﬁnd them by visiting the product page for the model you have, and clicking on the “Downloads” tab.

- Firmware and Software (such as the PC App) can be downloaded by visiting our website and clicking on Support - Software, or by visiting the product page for the model you have, and clicking on the “Downloads” tab.

- A Loop Certiﬁcation Form (ﬁnal test checklist, ﬁlled out and signed by integrator and venue manager, certifying that the system is complete and conforms to IEC 60118-4) may be found by visiting our website and clicking on Support - Document Library - Supplements - “Induction Loop Certication Form (IEC 60118-4)”.

-Loop System Designs are provided at no charge to authorized dealers, distributors or integrators who have a speciﬁc projects with signed contracts. Once a design request form is received by our Tech Blue Department (available on our website), these designs are created.

- Technical Support is provided by our Tech Blue Department from 8:00 a.m. - 4:30 p.m. Central Time. You can reach us by calling

800.328.6190 (Ask for TechBlue) or send an email to techblue@williamssound.com.

Page 38

DL107, DL207 and DL210 2.0 Digi-Loop™ DSP Induction Loop Ampliﬁers

Warranty

Williams Sound products are engineered, designed, and manufactured under carefully controlled conditions to provide you with many years of reliable service.

Williams Sound warrants the DL107 NET, DL107 NET D, DL207 NET, DL207 NET D, DL210 NET 2.0, and DL210 NET D 2.0 Digi-Loop™ DSP Induction Loop Ampliﬁers against defects in materials and workmanship under normal use and conditions for 5 years from date of purchase.

This warranty is available to the original end purchaser of the product and CAN BE transferred to subsequent purchasers of the product.

Microphones, earphones, headphones, batteries, chargers, cables, carry cases, and most other accessory products carry a 90-day warranty.

Williams Sound has no control over the conditions under which this product is used. Williams Sound, therefore, disclaims all warranties not set forth above, both express and implied, with respect to the DL107 NET, DL107 NET D, DL207 NET, DL207 NET D, DL210 NET 2.0, and DL210 NET D 2.0 Digi-Loop™ DSP Induction Loop Ampliﬁers, including but not limited to, any implied warranty of merchantability or ﬁtness of use of such equipment including, without limitation, any warranty that the use of such equipment for any purpose will comply with applicable laws and regulations. Williams Sound shall not be liable to any person or entity for any medical expenses or any direct, incidental or consequential damages caused by any use, defect, failure or malfunctioning of the product, whether a claim for such damages is based upon warranty, contract, tort or otherwise, the sole remedy for any defect, failure or malfunction of the products is replacement of the product. No person has any authority to bind Williams Sound to any representation or warranty with respect to the DL107 NET, DL107 NET D, DL207 NET, DL207 NET D, DL210 NET 2.0, and DL210 NET D 2.0 Digi-Loop™ DSP Induction Loop Ampliﬁers. Unauthorized repairs or modiﬁcations will void the warranty. This warranty is void if damage occurred because of misuse, or if the product has been repaired or modiﬁed by anyone other than a factory authorized service technician. Warranty does not cover normal wear and tear on the product or any other physical damage unless the damage was the result of a manufacturing defect. Williams Sound is not liable for consequential damages due to any failure of equipment to perform as intended. Williams Sound shall bear no responsibility or obligation with respect to the manner of use of any equipment sold by it.

This warranty does not cover reimbursement for your costs of removing and transporting the product for warranty service evaluation or installation of any replacement product provided under this warranty.

The exclusions and limitations set out above are not intended to, and should not be construed so as to contravene mandatory provisions of applicable law. If any part or term of this Disclaimer of Warranty is held to be illegal, unenforceable, or in conﬂict with applicable law by a court of competent jurisdiction, the validity of the remaining portions of this Disclaimer of Warranty shall not be aected, and all rights and obligations shall be construed and enforced as if this Limited Warranty did not contain the particular part or term held to be invalid. The terms of the warranty are governed by the laws of the State of Minnesota.

Prices and the speciﬁcations of the products are subject to change without notice.

*For Complete Warranty Statement go to: www.williamssound.com/warranty-statement

NOTICE: Williams Sound products are NOT designed for use in extreme temperature, humidity or chemical environments. The introduction of chemicals such as chlorine, salt water or human sweat into the product will cause damage to the circuitry. Damage due to these causes is NOT covered under the Product Warranty.

If you experience diculty with your system, call Toll-Free for Customer Assistance 1-800-843-3544 (U.S.A.) or +1 952 943 2252 (Outside the U.S.A.)

If it is necessary to return the system for service, your Customer Service Representative will give you a Return Authorization Number (RA) and shipping instructions.

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DL107, DL207 and DL210 2.0 Digi-Loop™ DSP Induction Loop Ampliﬁers

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info@williamssound.com / www.williamssound.com

800-843-3544 / INTL: +1-952-943-2252

Williams Sound Digi-Loop DL107 NET D, Digi-Loop DL207 NET D, Digi-Loop DL207 NET, Digi-Loop DL210 NET D 2.0, Digi-Loop DL210 NET 2.0 Installation Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Safety Warnings and Instructions

How to Read this Manual

a. Ethernet Control Setup

b. USB Control Setup

6. Appendices

a. Maintenance & cleaning

b. General Troubleshooting

d. PC App Detail

e. Front LCD Menu

g. Resources

Warranty