Williams av 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 202M

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

Table of Contents

Safety Warnings and Instructions 4

Avertissements et instructions de sécurité 5

How to Read this Manual 6

Amplier Overview 6

Main Features (these vary by model) 7

Getting started: Connecting the amplier 8

Rear connectors ................................................................................................................................................................................................................9

Rack Installation .............................................................................................................................................................................................................. 10

Ethernet Wiring ................................................................................................................................................................................................................ 10

Using the Dante Audio Input ........................................................................................................................................................................................ 11

Dante jack LED indication (this diers from standard ethernet). ......................................................................................................................... 11

Analog Audio Input Connections ............................................................................................................................................................................... 12

Loop Fault Relay Overview .......................................................................................................................................................................................... 12

DL107/207 Loop Fault Relay Connections ................................................................................................................................................................13

DL210 2.0 Loop Fault Relay connections ..................................................................................................................................................................13

Loop Wire Selection ........................................................................................................................................................................................................13

Powering Up .....................................................................................................................................................................................................................14

Initial Conditions ...............................................................................................................................................................................................................14

Loop Termination Warnings ..........................................................................................................................................................................................14

Checking and updating rmware 15

To check the ﬁrmware version on the ampliﬁer: .................................................................................................................................................... 15

To update the ﬁrmware on the ampliﬁer: ................................................................................................................................................................. 15

Installing and conguring the PC App 16

Ethernet Control Setup ..................................................................................................................................................................................................17

USB Control Setup ......................................................................................................................................................................................................... 18

Calibrating & commissioning the loop amplier 19

Appendices 23

Maintenance & cleaning .............................................................................................................................................................................................. 23

General Troubleshooting ............................................................................................................................................................................................. 23

Troubleshooting a ﬁrmware update failure ............................................................................................................................................................. 23

PC App Detail ................................................................................................................................................................................................................. 24

Front LCD Menu ............................................................................................................................................................................................................. 29

Speciﬁcations ...................................................................................................................................................................................................................37

Resources ........................................................................................................................................................................................................................ 39

Warranty 39

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

Williams AV 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 AV Advanced Loop Class, because it

includes specific information about Williams AV Loop Amplifiers in the

designing, installing and commissioning of loop systems.

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

Safety Warnings and Instruc-

tions

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 AV 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

Avertissements et instructions

de sécurité

AVERTISSEMENT! POUR RÉDUIRE LES RISQUES D’INCENDIE OU

DE CHOC ÉLECTRIQUE, NE PAS EXPOSER CET APPAREIL À LA PLUIE

OU À L’HUMIDITÉ.

MISE EN GARDE! POUR RÉDUIRE LE RISQUE DE CHOC

ÉLECTRIQUE, NE PAS RETIRER LE COUVERCLE. L’APPAREIL NE

CONTIENT AUCUNE PIÈCE RÉPARABLE PAR L’UTILISATEUR. CONFIER

LES RÉPARATIONS À UN RÉPARATEUR QUALIFIÉ.

Le symbole sur l’ampliﬁcateur est destiné à alerter l’utilisateur de la

présence d’une tension dangereuse non isolée dans le boîtier du produit,

qui peut être d’une amplitude susante pour constituer un risque

d’électrocution.

Le symbole sur l’ampliﬁcateur est destiné à alerter l’utilisateur

de la présence d’instructions de fonctionnement et de maintenance

(entretien) importantes dans la documentation accompagnant l’appareil.

AVIS CONCERNANT LE CORDON D’ALIMENTATION POUR UNE

UTILISATION HORS DES ÉTATS-UNIS – Prière d’appeler le service à la

clientèle de Williams AV au 800.328.6190 pour commander le cordon

d’alimentation adapté au pays dans lequel l’appareil va être utilisé.

Consignes de sécurité importantes:

1. Lire ces instructions

2. Conserver ces instructions

3. Respecter tous les avertissements

4. Suivre toutes les instructions

5. Ne pas utiliser cet appareil à proximité d’eau.

6. Nettoyer avec un chion sec uniquement.

7. Ne pas bloquer les évents de ventilation. Installer conformément aux

instructions du fabricant.

8. Ne pas installer à proximité de sources de chaleur telles que

radiateurs, registres de chaleur, cuisinières ou autres appareils (y compris

les ampliﬁcateurs) qui produisent de la chaleur.

9. Ne pas supprimer ou contourner la fonction de sécurité de la ﬁche

polarisée ou de mise à la terre. Une ﬁche polarisée a deux broches

dont l’une est plus large que l’autre. Une ﬁche de mise à la terre a deux

broches et une troisième broche de mise à la terre. La lame large ou la

troisième broche est fournie à des ﬁns de sécurité. Si la ﬁche fournie ne

rentre pas dans la prise, consulter un électricien pour le remplacement

de la prise obsolète.

10. Protéger le cordon d’alimentation contre tout piétinement ou

pincement, en particulier au niveau des ﬁches, des prises de courant et

de l’endroit où il sort de l’appareil.

11. Utiliser uniquement les pièces/accessoires spéciﬁés par le fabricant.

12. Débrancher cet appareil pendant les orages ou lorsqu’il n’est pas

utilisé pendant de longues périodes.

13. Conﬁer toute réparation à un réparateur qualiﬁé. Une réparation est

nécessaire lorsque l’appareil a été endommagé de quelque manière

que ce soit, par exemple si le cordon d’alimentation ou la ﬁche sont

endommagés, du liquide a été renversé, des objets sont tombés dans

l’appareil, et si l’appareil a été exposé à la pluie ou à l’humidité, ne

fonctionne pas normalement ou a chuté.

14. L’appareil ne doit pas être exposé à des gouttes ou des

éclaboussures et aucun objet rempli de liquide, tel qu’un vase, ne doit

être placé sur l’appareil.

15. Chariots et supports - L’appareil doit uniquement être utilisé avec

un chariot ou un support recommandé par le fabricant. L’ensemble

appareil et chariot doit être déplacée avec précaution. Des arrêts

rapides, une force excessive et des surfaces inégales peuvent

provoquer le renversement de l’appareil et du chariot.

16. Montage mural ou au plafond - L’appareil doit être monté sur

un mur ou un plafond uniquement selon les recommandations du

fabricant.

17. Sources d’alimentation - L’appareil doit être connecté à une

alimentation électrique uniquement du type décrit dans le mode

d’emploi ou tel qu’indiqué sur l’appareil.

18. Pénétration d’objets et de liquides - Des précautions doivent être

prises pour que des objets ne tombent pas et que des liquides ne

soient pas renversés dans le boîtier par les ouvertures.

19. Réparation et entretien - L’utilisateur ne doit pas tenter de réparer

l’appareil autrement que de la manière décrite dans le mode d’emploi.

Toute autre tâche d’entretien ou de réparation doit être conﬁée à un

technicien qualiﬁé.

Précautions:

1. Alimentation – AVERTISSEMENT: AVANT DE METTRE L’APPAREIL

EN MARCHE POUR LA PREMIÈRE FOIS, LIRE SOIGNEUSEMENT

LA SECTION QUI SUIT. L’ampliﬁcateur est conçu pour être utilisé

uniquement avec un cordon d’alimentation adaptéà la région dans

laquelle il sera utilisé.

2. Étiquette de tension (panneau arrière) - Une étiquette située au

niveau du raccordement électrique sur le panneau arrière indique la

puissance consommée CA de appareil. L’étiquette indiquera 100-240

VCA 50-60Hz 210W à commutation automatique.

3. Ne pas brancher les connexions d’entrée, de sortie, Ethernet ou USB

lorsque l’interrupteur d’alimentation est sur la position de marche.

4. Ne pas toucher le DL107/207/210 avec les mains mouillées. Ne pas

manipuler le DL107/207/210 ou le cordon d’alimentation avec les mains

mouillées ou humides. Si de l’eau ou tout autre liquide pénètre dans

l’armoire du DL107/207/210, conﬁer l’appareil à un technicien qualiﬁé

pour inspection.

5. Placer le DL107/207/210 dans un endroit bien ventilé. Veiller tout

particulièrement à assurer une ventilation susante de tous les côtés

du DL107/207/210, en particulier lorsqu’il est placé dans un rack

audio. Si la ventilation est bloquée, le DL107/207/210 peut surchauer

et dysfonctionner. Ne pas exposer le DL107/207/210 à la lumière

directe du soleil ou à des appareils de chauage, car la température

des composants internes du DL107/207/210 pourrait augmenter et

réduire la durée de vie des composants. Éviter les endroits humides et

poussiéreux.

6. Entretien - De temps en temps, essuyer les panneaux avant et

latéraux et le boîtier avec un chion doux. Ne pas utiliser un matériel

abrasif, des diluants, de l’alcool ou d’autres solvants ou chions

contenant des produits chimiques, au risque d’endommager la ﬁnition

ou d’eacer les indications fournies sur le panneau.

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:

Amplier overview Describes the purpose of this manual, amp models & features, and basic commissioning steps

Getting started: Connecting the Amplier Rear panel jacks, typical connections, do’s and don’ts

Checking and updating Firmware Checking version, downloading and upgrading ﬁrmware

Installing the PC App Downloading and installing the PC App

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

Appendicies Maintenance and cleaning.

Resources.

Front Panel Controls Reference

PC App Reference

Speciﬁcations

Warranty

Amplier Overview

Thank you for purchasing the DL107/207/210 Digi-Loop™ DSP Induction Loop Ampliﬁer. Williams AV 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 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

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

DL107 NET DL107 NET D DL207 NET DL207 NET D DL210 NET 2.0 DL210 NET D 2.0

Input: 70-100 Volt 111111

Input: Dante™ 111

Output: Loop 1 1 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 x x x x x x

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

Getting started: Connecting the amplier

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

(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

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

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

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

Input Connector Conguration/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 Specications

Line level terminal block mirrors the audio of the loop outputs

+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.