Extron electronics NetPA 502 AT, NetPA 1001-70V AT User Manual

User Guide

PRELIMINARY

NetPA AT Series

NetPA 502 AT and NetPA 1001-70V AT
Networked Audio Power Amplifiers with Dante™

Audio Power Amplifiers

68-2649-01 Rev. Ax3

05 15

Safety Instructions

Safety Instructions • English

WARNING: This symbol, , when used on the product, is intended to

alert the user of the presence of uninsulated dangerous voltage within the
product’s enclosure that may present a risk of electric shock.

ATTENTION: This symbol, , when used on the product, is intended

to alert the user of important operating and maintenance (servicing)
instructions in the literature provided with the equipment.

For information on safety guidelines, regulatory compliances, EMI/EMF
compatibility, accessibility, and related topics, see the Extron Safety and
Regulatory Compliance Guide, part number 68-290-01, on the Extron website,

www.extron.com.

Instructions de sécurité • Français

AVERTISSEMENT : Ce pictogramme, , lorsqu’il est utilisé sur le

produit, signale à l’utilisateur la présence à l’intérieur du boîtier du produit
d’une tension électrique dangereuse susceptible de provoquer un choc
électrique.

ATTENTION : Ce pictogramme, , lorsqu’il est utilisé sur le produit,

signale à l’utilisateur des instructions d’utilisation ou de maintenance
importantes qui se trouvent dans la documentation fournie avec le
matériel.

Pour en savoir plus sur les règles de sécurité, la conformité à la réglementation,
la compatibilité EMI/EMF, l’accessibilité, et autres sujets connexes, lisez les
informations de sécurité et de conformité Extron, réf. 68-290-01, sur le site
Extron, www.extron.com.

Sicherheitsanweisungen • Deutsch

WARNUNG: Dieses Symbol auf dem Produkt soll den Benutzer

darauf aufmerksam machen, dass im Inneren des Gehäuses dieses
Produktes gefährliche Spannungen herrschen, die nicht isoliert sind
und die einen elektrischen Schlag verursachen können.

Инструкция по технике безопасности • Русский

ПРЕДУПРЕЖДЕНИЕ: Данный символ, , если указан

на продукте, предупреждает пользователя о наличии
неизолированного опасного напряжения внутри корпуса
продукта, которое может привести к поражению
электрическим током.

ВНИМАНИЕ: Данный символ, , если указан на продукте,

предупреждает пользователя о наличии важных инструкций
по эксплуатации и обслуживанию в руководстве,
прилагаемом к данному оборудованию.

Для получения информации о правилах техники безопасности,
соблюдении нормативных требований, электромагнитной
совместимости (ЭМП/ЭДС), возможности доступа и других
вопросах см. руководство по безопасности и соблюдению
нормативных требований Extron на сайте Extron: www.extron.com,
номер по каталогу - 68-290-01.

Chinese Simplified（简体中文）

警告： 产品上的这个标志意在警告用户该产品机壳内有暴露的危险 电压，

有触电危险。

注意： 产品上的这个标志意在提示用户设备随附的用户手册中有

重要的操作和维护(维修）说明。

关于我们产品的安全指南、遵循的规范、EMI/EMF 的兼容性、无障碍
使用的特性等相关内容，敬请访问 Extron 网站 www.extron.com，参见
Extron 安全规范指南，产品编号 68-290-01。

Chinese Traditional（ )

警告: 若產品上使用此符 號，是為了提醒使用者，產品機殼內存在著

可能會導致觸電之風險的未絕緣危險電壓。

VORSICHT: Dieses Symbol auf dem Produkt soll dem Benutzer in der

im Lieferumfang enthaltenen Dokumentation besonders wichtige Hinweise
zur Bedienung und Wartung (Instandhaltung) geben.

Weitere Informationen über die Sicherheitsrichtlinien, Produkthandhabung,
EMI/EMF-Kompatibilität, Zugänglichkeit und verwandte Themen finden Sie in
den Extron-Richtlinien für Sicherheit und Handhabung (Artikelnummer
68-290-01) auf der Extron-Website, www.extron.com.

Instrucciones de seguridad • Español

ADVERTENCIA: Este símbolo, , cuando se utiliza en el producto,

avisa al usuario de la presencia de voltaje peligroso sin aislar dentro del
producto, lo que puede representar un riesgo de descarga eléctrica.

ATENCIÓN: Este símbolo, , cuando se utiliza en el producto, avisa

al usuario de la presencia de importantes instrucciones de uso y
mantenimiento recogidas en la documentación proporcionada con el
equipo.

Para obtener información sobre directrices de seguridad, cumplimiento
de normativas, compatibilidad electromagnética, accesibilidad y temas
relacionados, consulte la Guía de cumplimiento de normativas y seguridad de
Extron, referencia 68-290-01, en el sitio Web de Extron, www.extron.com.

注意 若產品上使用此符號，是為了提醒使用者，設備隨附的用戶手冊中有重

要的操作和維護（維修）説明。

有關安全性指導方針、法規遵守、EMI/EMF 相容性、存取範圍和相關主題的詳
細資訊，請瀏覽 Extron 網站：www.extron.com，然後參閱《Extron 安全性
與法規遵守手冊》，準則編號 68-290-01。

Japanese

警告: この記号 が製品上に表示されている場合は、筐体内に絶縁されて

いない高電圧が流れ、感電の危険があることを示しています。

注意: この記号 が製品上に表示されている場合は、本機の取扱説明書

に 記載さ れて いる重 要な操 作 と保 守 ( 整 備)の 指 示につ いてユーザ ー の 注
意を喚起するものです。

安全上のご注意、法規厳守、EMI/EMF適合性、その他の関連項目に
つ い て は 、エ ク スト ロン の ウ ェ ブ サ イト www.extron.comよ り 『 Extron Safety
and Regulatory Compliance Guide』 ( P/N 68-290-01) をご覧ください。

Korean

경고: 이 기호 가 제품에 사용될 경우, 제품의 인클로저 내에 있는

접지되지 않은 위험한 전류로 인해 사용자가 감전될 위험이 있음을
경고합니다.

주의: 이 기호 가 제품에 사용될 경우, 장비와 함께 제공된 책자에 나와

있는 주요 운영 및 유지보수(정비) 지침을 경고합니다.

안전 가이드라인, 규제 준수, EMI/EMF 호환성, 접근성, 그리고 관련 항목에
대한 자세한 내용은 Extron 웹 사이트(www.extron.com)의 Extron 안전 및
규제 준수 안내서, 68-290-01 조항을 참조하십시오.

FCC Class B Notice

NOTE: This device complies with part 15 of the FCC rules. Operation is subject to the

This equipment has been tested and found to comply with the limits for a Class B digital
device, pursuant to part15 of the FCC rules. These limits provide reasonable protection
against harmful interference in a residential installation. This equipment generates, uses,
and can radiate radio frequency energy and, if not installed and used in accordance with
the instructions, may cause harmful interference to radio communications. There is no
guarantee that interference will not occur. If this equipment does cause interference to radio
or television reception, which can be determined by turning the equipment off and on, you
are encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver.

• Connect the equipment into an outlet on a circuit different from that to which the receiver is

• Consult the dealer or an experienced radio/TV technician for help.

In order to maintain compliance with FCC regulations, shielded cables must be used with
this equipment. Operation with non-approved equipment or unshielded cables is likely to
result in interference to radio and TV reception. The user is cautioned that changes and
modifications made to the equipment without the approval of the manufacturer could void
the user’s authority to operate this equipment.

This Class B digital apparatus complies with Canadian ICES-003.

Cet appareil numérique de la classe B est conforme à la norme NMB-003 du Canada.

following two conditions: (1) This device may not cause harmful interference, and (2)
This device must accept any interference received, including interference that may
cause undesired operation.

connected.

ATTENTION:

• This equipment complies with FCC radiation exposure limits set forth for an

uncontrolled environment. This equipment should be installed and operated with

NOTE: For more information on safety guidelines, regulatory compliances, EMI/

minimum distance 20 cm (7.9 inches) between the radiator and your body.

• Cet équipement est conforme aux limites de radiation de la FCC établies pour un

environnement non géré. Il doit être installé et contrôlé à une distance minimale de
20 cm (7,87 inches) entre le radiateur et votre corps.

EMF compatibility, accessibility, and related topics see the “Extron Safety and

Regulatory Compliance Guide” on the Extron website.

Conventions Used in this Guide

Notifications

The following notifications are used in this guide:

WARNING: Potential risk of severe injury or death.

AVERTISSEMENT : Risque potentiel de blessure grave ou de mort.

ATTENTION:

• Risk of property damage.

• Risque de dommages matériels.

NOTE: A note draws attention to important information.

TIP: A tip provides a suggestion to make working with the application easier.

Specifications Availability

Product specifications are available on the Extron website, www.extron.com.

© 2015 Extron Electronics. All rights reserved.

Trademarks

All trademarks mentioned in this guide are the properties of their respective owners.

The following registered trademarks®, registered service marks
RGBSystems, Inc. or Extron Electronics:

Registered Trademarks

AVTrac, Cable Cubby, CrossPoint, eBUS, EDID Manager, EDID Minder, Extron, Flat Field, GlobalViewer, Hideaway, Inline, IPIntercom, IPLink, KeyMinder,
LockIt, MediaLink, PlenumVault, PoleVault, PowerCage, Pure3, Quantum, SoundField, SpeedMount, SpeedSwitch, SystemINTEGRATOR, TeamWork,
TouchLink, V-Lock, VersaTools, VN-Matrix, VoiceLift, WallVault, WindoWall, XTP, and XTP Systems

Registered Service Mark

AAP, AFL (Accu-RateFrameLock), ADSP(Advanced Digital Sync Processing), Auto-Image, CableCover, CDRS(ClassDRippleSuppression),
DDSP(Digital Display Sync Processing), DMI (DynamicMotionInterpolation), DriverConfigurator, DSPConfigurator, DSVP(Digital Sync Validation
Processing), DTP, eLink, EQIP, FastBite, FlexOS, FOXBOX, Global Configurator, IP Intercom HelpDesk, LinkLicense, MAAP, MicroDigital, ProDSP,
QS-FPC(QuickSwitch Front Panel Controller), Scope-Trigger, ShareLink, SIS (Simple Instruction Set), Skew-Free, SpeedNav, Triple-Action Switching,
WebShare. XTRA, ZipCaddy, ZipClip

(SM)

: S3 Service Support Solutions

Trademarks (™

(SM)

, and trademarks

(®)

)

(TM)

are the property of

Contents

Introduction ................................................... 1

About this Guide ................................................. 1

Overview ............................................................ 1

Features ............................................................. 2

Application Example ........................................... 4

Hardware Installation ...................................5

Mounting the NetPA AT ...................................... 5

Hardware Configuration ...................................... 5

Rear Panel Features and Connections ................ 6

Front Panel Indicators ......................................... 9

Software Installation .................................. 10

NetPAAT Software ........................................... 10

Software Installation Overview .......................... 10

Software Download and Installation .................. 11

Dante Controller for Windows ....................... 11

Dante Configuration and Operation ......... 13

NetPAAT Bus ................................................... 13

Managing Network Traffic ................................. 13

Creating a Physical Dante Network ................... 14

Starting Dante Controller .................................. 15

Device Name ................................................ 16

Dante Controller Naming Conventions .......... 16

Rename the NetPAAT ................................. 16

Renaming an Input ....................................... 19

Selecting Inputs and Outputs for Dante ............ 21

Routing Signals using Dante ......................... 21

Dante Operation ............................................... 22

Select Devices .............................................. 22

Route Inputs and Outputs............................. 24

Identifying the Physical Device ...................... 25

Setting a Static IP Address (Default DHCP) .. 25

Dante Troubleshooting ...................................... 27

Resetting the NetPA AT .................................... 29

Reference Information ............................... 30

Mountingof theNetPAAT ................................ 30

Tabletop Use ................................................ 30

UL Rack Mounting Guidelines ....................... 30

Rack Shelf Mounting..................................... 31

Under-desk Mounting ................................... 32

Other Mounting Options ............................... 32

Defeatable Auto Power-down Timer ................. 33

6NetPA AT Series User Guide • Contents

Introduction

This section gives an overview of the Extron NetPA AT Series of power amplifiers with Dante.
The models include the NetPA 502 AT and the NetPA 1001-70V AT. Topics include:

• About this Guide

• Overview

• Features

• Application Example

About this Guide

This guide describes the installation and operation of the NetPA 502 AT and NetPA 1001­70V AT power amplifiers. Throughout this guide both models may be referred to collectively
as the NetPA AT.

Overview

The Extron NetPA 502 AT and NetPA 1001-70V AT are half rack 1U, convection cooled
power amplifiers featuring Dante digital audio networking. They deliver two channels of
50 watts into 4 ohms, or a single channel of 100 watts at 70 volts. NetPA amplifiers can
receive audio from Dante-equipped audio processors over a standard local area network,
greatly simplifying the cabling infrastructure for sharing audio across multiple rooms or floors
in a building. In addition to amplifying incoming Dante audio, NetPA amplifiers feature line
level outputs that can simultaneously feed an additional speaker zone or audio system.
They feature an Extron exclusive, highly efficient, advanced Class D amplifier design, plus
patented CDRS™ - Class D Ripple Suppression that provides improved signal fidelity over
conventional Class D amplifiers.

The NetPA 502 AT two channel amplifier delivers 50 watts rms per channel into 4 ohms or
25 watts rms per channel into 8 ohms. The NetPA 502 AT is ideal for amplification of voice
or program content to stereo speakers, or two sets of 8 ohm ceiling speakers in a dual zone
application. The professional grade amplifier also features greater than 90 dB signal-to-noise
ratio and less than 0.1% THD+N.

The NetPA 1001-70V AT mono amplifier delivers 100 watts rms for 70 volt high impedance
speaker systems in voice reinforcement and distributed audio applications. The professional
grade amplifier features greater than 90 dB signal-to-noise ratio and less than 0.1% THD+N.
The NetPA 1001-70V AT also includes a switch selectable, high pass filter that rolls off
frequencies below 80 Hz to prevent saturation of speaker transformers.

Dante enables audio system scalability over a local area network using standard Internet
protocols. Dante technology distributes up to 512x512 audio channels at 24-bit/48 kHz
over a single Gigabit Ethernet link with extremely low latency. Dante-enabled Extron
digital signal processors feature a built-in four-port Gigabit switch that provides direct
interconnection of multiple units to create larger, cost-effective audio matrixes.

NetPA AT Series User Guide • Introduction 1

Features

Setting up a network of Extron Dante-enabled products, including the NetPA amplifiers,
requires Dante Controller software as well as DSP Configurator™ Software. Dante Controller
is used to easily assign an output from a Dante-equipped digital signal processor, such as
the Extron DMP 128 AT, to an input on a NetPA amplifier.

The NetPA 502 AT and NetPA 1001-70V AT can output incoming Dante channels as line
level signals to simultaneously feed the audio into another speaker zone or audio system.
Both amplifiers also include recessed, detented level controls located on the rear panel
to prevent tampering. These controls facilitate adjustment of audio system gain structure,
or setting an individual level for each zone. Additionally, the NetPA amplifiers include
multiple protection circuits that momentarily activate when an abnormal condition, such
as overheating, is detected. An advanced, automatic clip limiter protects speakers from
clipping distortion.

• Energy efficient Class D Amplifier — The NetPA amplifiers feature an Extron

exclusive, highly efficient, advanced Class D amplifier design to conserve energy and
reduce costs.

• Receives input signals via the Dante audio network — Select one or two channels

from remote digital signal processors on the Dante network to be brought into the
NetPA for amplification.

• Dante audio networking provides a wide range of expansion capabilities —

Dante-equipped audio products provide scalability for creating larger audio systems
over a local area network using standard Internet protocols.

• Dante audio to line level outputs — The NetPA provides fixed line level outputs that

allow the incoming Dante audio to be delivered to additional speaker zones, or another
audio system such as an ALS - assistive listening system.

• Professional grade signal-to-noise and THD+N performance — The NetPA

delivers professional grade performance with greater than 90 dB signal-to-noise ratio
and THD+N of less than 0.1%.

• Defeatable auto power-down timer — Ensures the amplifier is always active for 24/7

operation in critical applications. This feature can be enabled or disbled by setting an

internal jumper.

• Extron Patented CDRS - Class D Ripple Suppression — CDRS is an Extron

Patented technology that provides a smooth, clean audio waveform and an
improvement in signal fidelity over conventional class D amplifier designs.

• Convection cooled, fanless operation — The NetPA does not require internal fans or

vents for cooling, ensuring quiet, reliable operation.

• Ultra low inrush current — Allows multiple NetPA amplifiers to be powered

simultaneously without overloading power circuits. This eliminates the need for power
sequencing.

• Rack-mountable 1U, half rack width enclosure

• Auto power-down with fast power-up — The NetPA includes an auto power-down

feature that automatically places the amplifier into standby after 25 minutes of inactivity,
dramatically reducing power consumption. It quickly returns to full power status in less
than one second upon signal detection.

• Rear panel recessed, detented level controls

• Automatic clip limiter — Detects actual onset of clipping by comparing input and

output waveforms.

• Multiple protection circuits — Activate during output shorts, thermal overload, or DC

NetPA AT Series User Guide • Introduction 2

faults to prevent damage to the amplifier and speakers.

• Remote standby port — Enables the NetPA AT to be remotely powered down when

not in use, reducing operating cost.

• High pass filter for high impedance model — This switch selectable filter, available

on the 70 volt model, rolls off frequencies below 80 Hz to prevent saturation of speaker
transformers.

• Front-mounted signal and protection indication LEDs — Provides convenient

indication of input signal presence and protection circuit activation.

• Link LED indicator for Dante port — Provides visual indication of synchronization to

the master clock on the Dante network.

• Highly reliable, energy efficient internal universal power supply

NetPA AT Series User Guide • Introduction 3

Application Example

The illustration below is one example of configuring a system using the NetPA AT.

Figure 1. Application Example

NetPA AT Series User Guide • Introduction 4

Hardware Installation

This section describes the front and rear panel features and the rear panel connections and
includes the following topics:

• Mounting the NetPA AT

• Hardware Configuration

• Rear Panel Features and Connections

• Front Panel Indicators

WARNING: May result in serious injury. Installation and service must be

performed by authorized personnel only.

AVERTISSEMENT : Risque potentiel de blessure grave. L’installation et

l’entretien doivent être effectués par le personnel autorisé uniquement.

All wiring and electrical connections must conform to all applicable building codes and local
ordinances.

Mounting the NetPA AT

The 1U high, half rack width, 9.5-inch (24.1cm) deep enclosure is designed for
inconspicuous placement.

For detailed mounting options and UL rack mounting guidelines see Mounting of the NetPA

AT on page 30.

Hardware Configuration

Dante Controller for Windows from Audinate is required to select and route Dante transmit
and recieve channels to all connected Dante-compatible devices (see Dante Controller for

Windows on page11).

The NetPAAT has rear panel gain adjustment, a high pass filter (NetPA 1001-70V AT only), a
reset button, and several front and rear panel operational LED indicators.

A defeatable auto power-down timer ensures that the amplifier is always active for 24/7
operation in critical applications. This feature can be enabled or disabled by setting an

internal jumper.

NetPA AT Series User Guide • Hardware Installation 5

Rear Panel Features and Connections

NetPA 502 AT

Net

AT

100-240V 0.5AMAX

GAIN

1

2

-4

-6

-8

-12

-20

50-60Hz

A

100-240V 0.5AMAX

50-60Hz

IEC AC power input, 100 to 240 VAC, 50-60 Hz

A

Gain adjustment

B

Line out connector

C

Remote connector

D

RJ-45 Ethernet connector

E

B

GAIN

-6

-8

-12

-20

-

-4

-6

-2

-2

-8

0

0

+2

+2

+4

+4

--

+6

+6

J

LINE OUT

HPF

1

-4

-2
0

+2

+4

+6

80 Hz

OFF

LINE OUT

1

C

1

NetPA 502 AT

G

8Ω/4Ω OUTPUTS

1

CLASS 2 WIRING

H

REMOTE

2

STANDBY

D

AT

G

E

LINK

F

RESET

I

NetPA 1001-70V AT

REMOTE

G

STANDBY

Link indicator

F

Reset button

G

Amplified stereo audio output connector

H

Amplified mono audio output connector

I

HPF (high pass filter switch)

J

AT

LINK

RESET

70 V OUTPUTS

CLASS 2 WIRING

2

Figure 2. NetPA 502 AT and NetPA 1001-70V Rear Panels

Power — Be sure that power to the NetPA AT is turned off first by disconnecting the

A

power.

NOTE: Adjust the audio level to = (full attenuation) prior to powering the amplifier

(see Gain adjustment).

Turn off all other equipment and disconnect the power cables. Verify that the amplifier is
disconnected from the power source before proceeding.

ATTENTION: The amplier must be powered on last.

ATTENTION : L’amplicateur doit être allumé en dernier.

Reconnect all power cables and switch on all other equipment before powering on the
amplifier. The front panel power LED of the NetPA AT lights green.

Gain adjustment — Turn up the gain pot to the desired level as

B

explained below. When the potentiometer is set to 0 dB, and a 0 dBFS
signal is transmitted through the Dante port, the amplifier will output full
power.

GAIN

1

2

-4

-4

-6

-6

-2

-8

-12

-20

-2

-8

0

0

+2

+2

+4

+4

--

+6

+6

Use a Tweeker or small screwdriver to adjust the audio input gain for

the corresponding channel. The analog potentiometers control the gain
from = (full attenuation) to 0 dB (no gain) to + 6 dB gain.

NOTE:

• The potentiometer affects the gain post DAC and pre

PA 1001-70V

GAIN

-4

-6

-2

-8

0

-12

+2

+4

-20

-

+6

amplifier stage.

• The gain potentiometer does not adjust the level of the line

output.

NetPA AT Series User Guide • Hardware Installation 6

Line out connection — Connect an amplifier or other device to the 3-pole, 3.5 mm

Sleeve

C

captive screw connectors for channel 1 and channel 2 (NetPA 502 AT) or the single
channel (NetPA 1001-70V). Wire as shown below.

Tip

Ring

Balanced Output

" (5 mm) MAX.

Do not tin the wires!

ATTENTION:

contact. DO NOT connect the sleeves to the negative (–) contacts.

ATTENTION :

au sol. Ne PAS connecter les manchons aux contacts négatifs (–).

Tip

NO Ground Here

Sleeve

Unbalanced Output

For unbalanced audio outputs, connect the sleeves to the ground

Pour l’audio asymétrique, connectez les manchons au contact

NOTE: The signal that comes out of the line output is the same signal that goes into the

amplifier stage, prior to the gain potentiometers. (The same audio content coming out
of channel 1 amplified output comes out of the channel 1 line output.)

Audio Output Wiring

Remote connection — The 3.5 mm, 2-pin captive screw remote control port forces

D

the unit into standby mode when the remote standby pin is shorted to ground. The
amplifier will wake from standby, and reset the inactivity timer, when the connection is
reopened.

RJ-45 Ethernet connection — Using standard CAT cable, connect the RJ-45

E

connector of the NetPA AT to a LAN for digital audio transport.

Link indicator LED — The Link indicator LED is locked to the Dante sync signal. This

F

LED will indicate three states in normal operation:

• Blinking (1 Hz) Green — The Dante card generates network audio clock; unit is

master clock.

• Solid green — The Dante card is locked to network audio clock; unit is slaved to

network audio clock.

• Off — The Dante card is not locked to network audio clock.

Reset button — The NetPA AT utilizes DHCP addressing by default.

G

A recessed reset button on the rear panel (see figure 2 on page 6) initiates a reset
mode. Reset will set the IP addressing mode to DHCP (Dante default), clear the
previous IP address, and reset the device name to default.

NOTE: Initiating a reset while the NetPA AT is connected to a transmitting device will

sever that connection.

To reset the NetPA AT: press and hold down the reset button for ten seconds until both
of the rear panel RJ-45 Ethernet port LEDs blink twice.

NOTE: When the NetPA AT is first powered on, or reset, the default name shall be

“NetPA-xxxxxx” where xxxxxx are the last six digits of the MAC address of the
unit.

NetPA AT Series User Guide • Hardware Installation 7

Amplified stereo audio output connection — Wire the speakers to the output

LASS 2 WIR ING

CLAS S 2 W IRING

H

connector of the NetPA 502 AT using the 4-pole captive screw connector, as shown
below.

2

Do not tin the wires!

Amplified mono audio output connection — Wire the speakers to the output

I

8Ω/4Ω OUTPUTS

1

C

connector of the NetPA 1001-70V AT using the 2-pole captive screw connector, as
shown below.

Do not tin the wires!

HPF (high pass filter switch) — On the NetPA 1001-70V AT, use a Tweeker to toggle

J

70 V OUTPUTS

the high pass filter switch between off (no filtering) and 80 Hz (default). Setting the
switch to 80 Hz prevents the saturation of speaker input transformers by low frequency
signals. The high pass filter can be safely turned off only if the filtering is applied
upstream of the amplifier.

NetPA AT Series User Guide • Hardware Installation 8

Front Panel Indicators

A

C

B

Figure 3. NetPA 502 AT and NetPA 1001-70V AT Front Panels

Power LED —

A

• Lights solid green when powered on and active.

• Lights amber when:

• In standby mode.

• DC voltage is detected on the output.

LIMITER/PROTECT

SIGNAL

NETWORK POWER AMPLIFIER

LIMITER/PROTECT

SIGNAL

NETWORK POWER AMPLIFIER

NetPA 502 AT

NetPA 1001-70V AT

NOTE: The unit can only be cleared after DC voltage is detected by cycling

AC power off then back on.

• Momentarily blinks in the same color and pattern as the rear panel link indicator

(blinks amber every 0.5 seconds for 10 seconds) when the identify device tool is
activated (see Identifying the Physical Device on page 25). Once this sequence

B

has completed, the power LED will resume its previous function.

Limiter/Protect LED —

• Lights solid red when the channel is in protection mode, triggered by any of the

limiter protection circuits:

• Clip limiter activated due to excessive clipping.

• Short circuit on output

• Thermal protection

Signal LED — The LED lights green when the input signal is detected and will vary in

C

intensity. The green signal LED varies in brightness corresponding to the real-time input
signal level. It begins to light at – 60dBFS increasing in steps to full intensity as the
signal level increases.

NetPA AT Series User Guide • Hardware Installation 9

Software Installation

This section describes the software requirements and installation and includes the following
topics:

• NetPAAT Software

• Software Installation Overview

• Software Download and Installation

NetPAAT Software

The NetPA AT has both hardware and software controls. Software configuration and
operation are accomplished using a PC running Microsoft Windows 7 or newer. Dante
Controller for Windows from Audinate is required to select and route NetPAAT digital inputs
and outputs to and from all connected Dante-compatible devices on the same network and
to rename connected devices.

To assist identification of multiple connected NetPAATs on the network, each NetPA AT
must be renamed using Dante Controller. Dante Controller is available from the NetPAAT
product page on the Extron website (see Software Download and Installation on page 11).
Digital signal routing can only be done using Dante Controller from Audinate.

See Rear Panel Features and Connections on page 6 for additional details to connect via
the LAN port.

Software Installation Overview

Download and install the Dante Controller software program.

 Download Dante Controller for Windows from the Extron website (see Dante Controller

for Windows on page 11).

 Install Dante Controller.
 Rename each NetPAAT as it is placed on the network (when there are multiple

NetPAATs on the network) (see Rename the NetPA AT on page 16).

NOTE: To avoid confusion, rename each device with a unique identifier. To simplify

renaming, connect only one device to the network at a time. As each device is
renamed, it can remain on the network.

NetPA AT Series User Guide • Software Installation

10

Software Download and Installation

Dante Controller must be installed to route audio transmit and receive channels to the
NetPA.

Dante Controller for Windows

1. From the Extron Electronics web page at www.extron.com, enter NetPA AT in the

search field and press <Enter>.The NetPAAT product page opens.

11

AXP 50 C AT

2

2

Figure 4. NetPAAT Product Page

2. Click Downloads (2). The Downloads panel opens. Dante Controller is listed.

3. Click Dante Controller (3).

33

The Download Center page opens.

NetPA AT Series User Guide • Software Installation 11

44

5

5

Figure 5. Download Center - Dante Download

4. Fill in the required fields.

5. Click Download.

6. Save the file to your desktop (or other known location).

7. Locate and double-click the saved Dante Controller file to begin installation.

8. Follow the onscreen instructions. When the installation completes, close the installation

dialog.

NetPA AT Series User Guide • Software Installation 12

Dante Configuration
and Operation

This section describes the NetPA AT network installation, configuration, and control using
the Dante Controller for Windows.

• NetPA AT Bus

• Managing Network Traffic

• Creating a Physical Dante Network

• Starting Dante Controller

• Selecting Inputs and Outputs for Dante

• Dante Operation

• Dante Troubleshooting

• Resetting the NetPA AT

NetPAAT Bus

NetPA AT uses Dante technology to provide high performance digital audio networking
over standard TCP/IP networks. Dante allows audio channels to be transported across
a switched Ethernet data network while meeting the quality requirements of professional
audio.

The audio network can be shared with control traffic or unrelated data traffic. Audio
channels can be unicast or multicast to make the best use of available bandwidth.

The NetPAAT models are receivers (destination) for signals on a Dante network. Receivers
can be located anywhere on the Ethernet network and can be relocated without
reconfiguring the NetPAAT or the network.

Managing Network Traffic

Because Dante devices prefer to use multi-cast routing to distribute audio channels, it is
recommended that, if possible, the audio network be kept separate from the local business
network. For more information on strategies to manage audio network traffic in an integrated
system, refer to the Dante Controller manual (Multicast Transmit Flow Configuration) at the

Audinate website.

NetPA AT Series User Guide • Dante Configuration and Operation

13

Creating a Physical Dante Network

Star Network Topology

NetP

A 50

2 AT

NetP

A 50

2 AT

50-60H

8

20

NetP

A 50

2 AT

1

8Ω/

S

CLASS

G

Y

G

E

2

LINK

A

234

A 50

2 AT

A physical network is required to share Dante audio channels between a Dante source
device and a NetPA AT. The NetPA 502AT and NetPA 1001-70V AT have an RJ-45
connector located on the back panel that accepts a standard network cable.

A DMP128-based Dante network can be configured in a star or daisy chain network
topology using the four port switch and the Dante Controller in switched mode.

Star network topology places one DMP128C AT as the central unit, which connects
directly to up to three more units. Alternatively, a larger network switch in place of the central
DMP128AT, allows more than four NetPAATs to connect in the star configuration.

NetPA 502 AT

100-240V x.yAMAX

z

50-60Hz

LINE OUT

GAIN

E OUT

1

2

1

2

-4

-4

-6

-6

-2

-2

-8

-8

­0

0

-12

­+2

+2

+4

+4

-20

-

--

+6

+6

NetPA 502 AT

8Ω/4Ω OUTPUTS

4Ω OUTPUT

AT

REMOTE

REMOT

1

2

TANDB

G

STANDBY

LINK

RESET

RESET

CLASS 2 WIRING

2 WIRIN

NetPA 502 AT

100-240V x.yAMAX

DMP 128 C AT

100-240V ~ --A MAX

LINE OUT

GAIN

1

2

1

2

-4

-4

-6

-6

-2

-2

-8

-8

0

0

-12
+2

+2

+4

+4

-20

--

+6

+6

50-60Hz

1

MIC +48V

1234

MIC/LINE INPUTS

5678

50/60 Hz

NetPA 502 AT

8Ω/4Ω OUTPUTS

AT

REMOTE

1

G

2

STANDBY

LINK

RESET

CLASS 2 WIRING

910

4 1

DMP 128 C AT

11 1273625

8

234

56 78

OUTPUTS

1 2345G6

DIGITAL I/O

1112 13 14 15 G1617181920G

78910G

1234

RS-232

TxRx G

REMOTE AT

EXP

RESET

LAN

NetPA 502 AT

100-240V x.yAMAX

-4

-6

-8

-12

-20

50-60Hz

LINE OUT

GAIN

1

2

1

2

-4

-6

-2

-2

-8

0

0

+2

+2

+4

+4

--

+6

+6

NetPA 502 AT

8Ω/4Ω OUTPUTS

AT

REMOTE

1

G

2

STANDBY

LINK

RESET

CLASS 2 WIRING

Figure 6. Star Network Topology

A daisy chain configuration can also be used. Each NetPA AT device can only connect to
the end of the chain.

100-240V ~ --A MAX

4 1

1

MIC +48V

1234

MIC/LINE INPUTS

5678

50/60 Hz

910

DMP 128 C AT

8

11 1273625

234

56 78

OUTPUTS

DMP 128 AT

1 2345G6

78910G

DIGITAL I/O

1112 13 14 15 G1617181920G

1234

RS-232

TxRx G

REMOTE AT

EXP

LAN

AXP 50 C AT #1 AXP 50 C AT #2 NetPA 502 AT

1

2345

I/OINPUTS

ING

0102 IN G0102ING0102 IN G0102ING0102

POWER
12V

1.0A MAX
1

RESET

2345

AT

1

234

AXP 50 C AT

1

2345

I/OINPUTS

ING

0102 IN G0102ING0102 IN G0102ING0102

POWER
12V

1.0A MAX

1

RESET

2345

AT

1

234

RESET

ESET

AXP 50 C AT

XP 50 C AT

100-240V x.yAMAX

NetPA 502 AT

8Ω/4Ω OUTPUTS

AT

LINE OUT

GAIN

REMOTE

1

1

2

1

2

-4

-4

-6

-6

-2

-2

-8

-8

0

0

G

-12
+2

+2

+4

+4

-20

--

+6

+6

50-60Hz

2

STANDBY

LINK

RESET

CLASS 2 WIRING

Daisy Chain Network Topology

Figure 7. Daisy Chain Topology

Hybrid versions combining the star and daisy chain topologies can be built, but a ring
topology, or any topology that creates a duplicate connection causes a connection failure in
Dante Controller.

NOTE: Connections between ports in either a star or daisy chain network do not need

to be sequential (1 to 2, 2 to 3, 3 to 4), nor do they need to be made between the
same port numbers (1 to 1, 2 to 2, 3 to 3, 4 to 4).

NOTE: At the moment, Dante is not compatible with EEE (Energy Efficient Ethernet)

technology. Care should be taken when using a network switch with this technology in
a Dante network.

• If using a managed switch, ensure that it supports disabling EEE on all ports that

will be used for Dante traffic.

• If using an unmanaged switch, do not use models that support the EEE function, as

it can not be disabled on these models.

• For more information on this topic, please refer to the Audinate website (https://

www.audinate.com).

NetPA AT Series User Guide • Dante Configuration and Operation 14

Starting Dante Controller

To launch Dante Controller from the computer start menu, select:

All Programs > Audinate > Dante Controller > Dante Controller.

The Dante Controller - Network View screen opens.

If the network has a DHCP server, it receives its IP configuration using the standard DHCP
protocol. On a network without a DHCP server, a Dante-enabled device automatically
assigns itself an address using link local protocol.

Once connected, Dante Controller begins auto-discovery of all Dante devices. While
scanning the network, it also advertises itself to allow Dante-enabled devices to see and
communicate with it. When the network scan is compete, Dante Controller - Network

View screen is displayed.

22

11

Figure 8. Dante Controller Network View Screen

The major elements of the Network View screen include:

• Receivers, representing Dante device inputs, are on the left side running vertically (see

figure 7, 1).

• Transmitters, representing Dante device outputs, are along the top running horizontally

(2).

• Connection points of the receivers and transmitters form a matrix in the lower-right

panel of the screen (3).

NetPA AT Series User Guide • Dante Configuration and Operation 15

33

Device Name

The default device name of the NetPAAT consists of its model name, followed by the last
six digits of its MAC address (for example, NetPA - 063f70).

Multiple devices on the same network can present difficulty identifying inputs and outputs.
To avoid confusion, rename each device to a unique identifier immediately after you connect
it (see Renaming an input on page 19).

NOTE: To simplify renaming, connect only one Dante device to the network at a time.

After a device is renamed, it can remain connected.

In addition to renaming the connected device, you can relabel the inputs. Avoid confusing
device names and inputs during operation. If necessary, rename the device and inputs
before proceeding.

Dante Controller Naming Conventions

• Device labels follow Domain Name System (DNS) hostname rules. Legal characters are

A-Z, a-z, 0-9, and hyphen (-). Device labels must begin with a letter.

• Dante Tx and Rx labels can be up to 30 characters in length. Label comparisons are not

case-sensitive; “OUTPUT01” and “output01” are recognized as the same connection.
Unicode and non-roman characters are not supported.

• Tx and Rx channel labels can use any character except equals (=), period (.), or @.

• Tx and Rx channel labels must be unique on a device but do not need to be unique on

the network.

Rename the NetPAAT

Dante Controller auto-discovers all Dante devices on the network and advertises itself to
allow other Dante-enabled devices to communicate with it. The default device name is the
word “NetPA” followed by the last six digits of the MAC address of the device. Multiple
devices on the same network can present difficulty identifying inputs and outputs. To avoid
confusion, each device must be renamed to a unique identifier.

NOTE: To simplify renaming, connect only one Dante device to the network at a time.

As each device is renamed, it can remain connected.

Ensure the control computer and the NetPA AT are connected to the same network.

All Dante devices on the network are discovered and listed.

1. From the toolbar, select Device>Device View.

NetPA AT Series User Guide • Dante Configuration and Operation 16

2. The Dante Controller - Device View dialog opens.

Select your device from the (Select a Dante Device...) drop-down list.

NOTES:

• If there are multiple NetPA ATs connected to the network that have not been

renamed, to identify an individual device you must obtain the MAC address of
the desired device from the label on the rear panel.

• The identify device tool can also be used to identify the unit. Refer to

Identifying the Physical Device on page 25.

3. The Device View dialog populates with the selected NetPAAT information.

4. Click the Device Config tab to open the device configuration page.

5. In the Rename Device panel, enter the new name of the device in the text field. No

spaces are allowed in the name.

6. Click Apply. A warning opens.

NetPA AT Series User Guide • Dante Configuration and Operation 17

7. Click Yes to enter the new name, then close the Device Configuration dialog. The new

name is written to the NetPAAT. Repeat as necessary for all NetPAAT devices.

NOTE: After the NetPAAT is renamed, it can remain connected to the network.

However, subsequent devices must be connected one at a time and renamed
before the next device is connected.

NetPA AT Series User Guide • Dante Configuration and Operation 18

Renaming an Input

If the devices are not properly named, Dante network connection points can quickly become
unmanageable in large systems. To better organize the various inputs, it is recommended
you name each input using descriptions of the device they belong to, the location of the
device, or the purpose of the input.

To view the inputs of a receiver device on Dante, click the + sign next to the receiver name
to expand it (see figure 9, 1, for an example).

11

2

2

Figure 9. Expanded Device View — Input and Output Names

The names shown in the Dante Receivers column are extracted from the Dante interface
of the connected device.

• The NetPAAT input is the Dante receiver (1)

• The named input (2) is INPUT-MONO.

TIP: To simplify setup and operation of large matrix systems, rename the input (receiver)

lines to better indicate the output to which a receiver is connected.

labelled NetPA-Classroom-01.

NetPA AT Series User Guide • Dante Configuration and Operation 19

To rename an input

11

1. From the Device menu on the Network View screen, select Device View.

Alternatively, press <Ctrl+D> on the keyboard.

2. From the Select a Dante Device drop-down menu, select the name of your NetPA AT.

Figure 10. Device Drop-down Menu on the Device View Screen

3. Select the Receive tab (see figure 11, 1).

4. Click on the default name of the desired input. The name becomes a text box with a

cursor (2).

22

Figure 11. Device View Screen — Renaming an Input

5. In the selected name text box, enter the new name (up to 30 characters) using any

combination of letters, numbers, and special characters.

6. Press <Enter> to select the next name down on the Receivers list, or click in another

input text box.

7. Repeat steps 4 through 6 for each input to be renamed.

8. When finished renaming inputs, close the Device View dialog box.

NetPA AT Series User Guide • Dante Configuration and Operation 20

Selecting Inputs and Outputs for Dante

Dante Controller is used for all network level signal routing of AT bus inputs and outputs.
The digital input channels of the NetPAAT are shown in Dante Controller as receivers. The
digital inputs are available in Dante Controller for routing to other Dante devices.

Routing Signals using Dante

Channels received from the network are routed using the Dante Controller Network View
screen, Routing tab (see figure 12).

Figure 12. Dante Network View Screen, Routing Tab

The transmitters, listed horizontally along the top of the screen, and the receivers, listed
vertically down the left side, form a matrix whose intersections are the connection points
between the receivers and transmitters.

• To make the receiver-to-transmitter connection, click once on an intersection.

• To break a connection, click on the icon at the intersection.

One of the following icons appears at each connection intersection, indicating the status of
both the transmitter and receiver channels and the connections (subscriptions):

Icon Description

Indicates an active connection (subscription).

NetPA AT Series User Guide • Dante Configuration and Operation 21

NOTE: After making changes to Dante network routing such as connections (subscriptions), device

names, or channel labels, wait at least 5 seconds before disconnecting or powering down the devices.
This ensures that the new information is properly saved to those devices. Device level configuration
such as sample rates, latency, and clock settings are saved instantly.

Dante Operation

Select Devices

Indicates a pending connection.

Indicates a broken connection (subscription).

Indicates the transmitting device has been removed from the network or is
switched off.

See the Dante Controller User Guide, available at the Audinate website, for additional
information.

After the receive channels of the NetPAAT are named, they must be routed to a transmit
channel on the audio network.

Dante Controller is required.

Figure 13. Network Devices

NetPA AT Series User Guide • Dante Configuration and Operation 22

Ensure the control computer and NetPAAT are connected to the same network.

1. From the start menu select All Programs > Audinate > Dante Controller > Dante

Controller. The Dante Controller - Network View screen opens.

Dante Controller auto-discovers Dante devices on the network and advertises itself to
allow other Dante-enabled devices to communicate with it. Device inputs are Dante
receivers (listed vertically on the left) and device outputs are Dante transmitters (listed
horizontally across the top). Transmitters (outputs) connect to receivers (inputs) using
the connection matrix.

2. Click the + box next to the NetPA (NetPA-Classroom-01) in the Dante Receivers column

to show all device inputs.

3. Click the + box next to the transmitter (DMP128-LectureHall) in the Dante Transmitter

row to show all device outputs.

NetPA AT Series User Guide • Dante Configuration and Operation 23

Route Inputs and Outputs

Figure 14. Routing Inputs and Outputs

1. Click the + box next to the input channels (receivers) on the NetPA (NetPA-

Classroom-01 in the example above).

All device outputs (transmitters) display horizontally.

2. Click the junction of the desired connection

(Example: DMP128-LectureHall Output-01 to NetPA-Classroom-01 INPUT-MONO).

A checkmark at the junction indicates the connection is made. A checkmark is also
placed next to the receiver channel.

NOTE: An input (receiver) can only connect to one output (transmitter). An output

(transmitter) can connect to multiple inputs (receivers).

3. Click the junction again to disconnect the input from the output.

NetPA AT Series User Guide • Dante Configuration and Operation 24

Identifying the Physical Device

If the amplifier needs to be physically identified, the identify device tool can be used to aid in
its location.

1. Start with steps 1 through 3 of Rename the NetPA AT on page 16.

2. To identify the NetPA, click on the “eye” icon.

3. Both the front panel power LED A (see figure 3 on page 9) and the rear panel link LED

(see figure 2 on page 6) will blink amber at a rate of 0.5 Hz for ten seconds after

F

which the LEDs will return to their previous state.

4. Locate the unit with the blinking LEDs.

Setting a Static IP Address (Default DHCP)

LAN — Using a standard Ethernet cable, connect to a network via the AT port (see figure 2

on page 6).

E

To set the IP address of a Dante device, the name of the device must be known (see

Rename the NetPAAT on page16).

1. From the start menu select All Programs > Audinate > Dante Controller >

Dante Controller.

The Dante Controller - Network View screen opens.

All Dante devices on the network are discovered and listed.

NetPA AT Series User Guide • Dante Configuration and Operation 25

2. From the toolbar, select Device>Device View.

3. The Dante Controller - Device View dialog box opens.

‘Select your device from the (Select a Dante Device...) drop-down list.

4. Click the Network Config tab to open the network configuration page.

5. Click on Manually configure an IP Address, then enter the IP address and the

subnet mask.

6. Click Apply.

7. Next, the warning box will appear, click Yes.

8. Click Reboot.

NetPA AT Series User Guide • Dante Configuration and Operation 26

Dante Troubleshooting

The most common Dante troubleshooting issues occur when no devices are discovered by
the Dante Controller software, or routing is not successful or is prevented. Both issues occur
when software is not able to properly discover devices operating on the Dante network.

Before moving into more difficult troubleshooting, shut down Dante Controller and reseat
the Ethernet cable connecting the PC to the Dante network. Restart the Dante Controller
software. This can be enough for the software to reacquire the Dante network.

If the problem persists, perform the following troubleshooting procedures in the order
presented.

Simplifying the network for troubleshooting

If further troubleshooting of Dante discovery is necessary, begin by simplifying the network:

1. Connect the PC to the NetPA AT port.

2. Use Dante Controller to check if the issue was resolved before moving on to network

interface troubleshooting.

3. If the issue is resolved, add connections and hardware one at a time, checking for

proper operation after each addition, until the point of failure is discovered (typically a
bad cable or invalid redundant configuration).

Troubleshooting the network interface

If the issue is still present after simplifying the network, continue to diagnose the PC network
connections as described below. Check Dante Controller after each step to see if the
problem is resolved.

1. Open the Configure Dante Interface dialog box by clicking the Choose a Dante

Interface icon (

connection is selected (the PC LAN port physically connected to the AT network) and
note the IP address.

) on the Dante Controller main screen. Be certain the correct LAN

1

Figure 15. Configure Dante Interfaces Dialog Box

2. If it is on, turn off the PC wireless adapter. Disable all connections except the LAN

port connected to the Dante network (verify this is the correct port by checking the IP
address shown in step 1 above).

3. Turn off all anti-virus and firewall software on the computer.

4. Enable DHCP on the remaining network connection. This forces the computer to

acquire an IP address from the Dante interface.

NetPA AT Series User Guide • Dante Configuration and Operation 27

Additional Troubleshooting

For further help, see Dante Troubleshooting in the Dante help file. To access the Dante help file, do
any of the following:

• Click the Help icon in the upper-right corner of the Dante screen (see figure 16,

following figure).

• Select Contents from the Help menu (

) on the Dante screen.

2

1

, in the

• Press the <F1> key on the computer keyboard.

Figure 16. Accessing the Dante Help File

NetPA AT Series User Guide • Dante Configuration and Operation 28

Resetting the NetPA AT

The NetPA AT utilizes DHCP addressing by default.

A recessed reset button G on the rear panel (see figure 2 on page 6) initiates a reset
mode. Reset will set the IP addressing mode to DHCP (Dante default), clear the previous IP
address, and reset the device name to default.

NOTE: Initiating a reset while the NetPA AT is connected to a transmitting device will

sever that connection.

To reset the NetPA AT: press and hold down the reset button for ten seconds until both of
the rear panel RJ-45 Ethernet port LEDs blink twice.

NOTE: When the NetPA AT is first powered on, or reset, the default name shall be

“NetPA-xxxxxx” where xxxxxx are the last six digits of the MAC address of the unit.

NetPA AT Series User Guide • Dante Configuration and Operation 29

Reference
Information

This section describes mounting options and the defeatable auto power-down timer.

• Mounting of the NetPAAT

• Defeatable Auto Power-down Timer

Mountingof theNetPAAT

The NetPAAT can be mounted in the following ways:

• Set on a table,

• Mounted on a rack shelf,

• Mounted under a desk or tabletop.

The half rack width, 9.5 inch (24.1cm) deep enclosure is designed for inconspicuous
under-table placement using the UTS Series Under Table Shelf System or MBU 125 Low­Profile Mount Kit, available separately.

Tabletop Use

Each NetPAAT is supplied with rubber feet (not installed). For tabletop use, attach a
self-adhesive rubber foot to each corner of the bottom of the unit.

UL Rack Mounting Guidelines

The following Underwriters Laboratories (UL) guidelines pertain to the safe installation of the
NetPAAT in a rack.

1. Elevated operating ambient temperature — If the equipment is installed in a closed

or multi-unit rack assembly, the operating ambient temperature of the rack environment
may be greater than room ambient temperature. Therefore, consider installing the
equipment in an environment compatible with the maximum ambient temperature (TMA)
specified by the manufacturer.

2. Reduced air flow — Install the equipment in a rack so that the amount of air flow

required for safe operation of the equipment is not compromised.

3. Mechanical loading — Mount the equipment in the rack so that a hazardous

condition is not achieved due to uneven mechanical loading.

4. Circuit overloading — Connect the equipment to the supply circuit and consider the

effect that circuit overloading might have on overcurrent protection and supply wiring.
Appropriate consideration of equipment nameplate ratings should be used when
addressing this concern.

5. Reliable earthing (grounding) — Maintain reliable grounding of rack-mounted

equipment. Pay particular attention to supply connections other than direct connections
to the branch circuit (such as the use of power strips).

NetPA AT Series User Guide • Reference Information 30

Rack Shelf Mounting

For rack mounting, do not install the rubber feet. The NetPAAT can be mounted on a 19
inchUniversal 1U or Basic rack shelf.

To rack mount the NetPAAT on a rack shelf:

1. If rubber feet are installed on the bottom of the NetPAAT, remove them.

2. Mount the NetPAAT on the rack shelf, using two 4-40 x 3/16 inch screws in opposite

(diagonal) corners to secure the unit to the shelf.

TIP: Where access to the screws mounting the device to a shelf is diffficult, mount

Front false
faceplate
uses 2
screws.

the device to the shelf prior to installing the shelf in the rack..

1U Universal Rack Shelf

1/2 Rack Width Front False
Faceplate

(2) 4-40 x 3/16"
Screws

NOTE: Using screws longer

Use 2 mounting holes on
opposite corners.

than 3/16” will damage the
unit and void the warranty.

Figure 17. Mounting the NetPA AT on a Universal Rack Shelf

3. Install blank panels or other units on the rack shelf.

NetPA AT Series User Guide • Reference Information 31

Under-desk Mounting

The table or wall mounting brackets extend approximately 1/4 inch (6.4 mm) above the top
surface of the enclosure. This design allows for an air space between the enclosure and the
surface to which it is mounted.

Mount the NetPAAT under a desk or table as follows:

1. Attach the MBU 125 brackets.

2. Hold the unit with the attached brackets against the underside of the table or other

furniture. Mark the location of the screw holes of the bracket on the mounting surface.

3. Drill 3/32 inch (2 mm) diameter pilot holes, 1/4 inch (6.4 mm) deep in the mounting

surface at the marked screw locations.

4. Insert #8 wood screws into the four pilot holes. Tighten each screw into the mounting

surface until just less than 1/4 inch of the screw’s head protrudes.

5. Align the mounting screws with the slots in the brackets and place the unit against the

surface, with the screws through the bracket slots.

6. Slide the unit slightly forward or back, then tighten all four screws to secure it in place.

MBU 125

Figure 18. Under-furniture Mounting

Other Mounting Options

The NetPA AT can also be installed under furniture using the UTS 100 and
UTS 150 under-table shelf system.

NetPA AT Series User Guide • Reference Information 32

Defeatable Auto Power-down Timer

Remove 9 Screws

The auto power-down timer determines whether or not the NetPA AT enters standby mode.
The amplifier powers down if the input signal remains below the input signal detection
threshold for about 25 minutes.

The timer resets whenever the input signal exceeds the input signal detection threshold.
Resetting the timer starts a new 25-minute countdown until the amplifier powers down.
Resetting the timer also causes an amplifier that is already powered down to “wake up” or
power back up.

There may be times when it is desirable to bypass (disable) the auto power-down timer.
Examples of when defeating the auto power-down circuit might be required include:

• If the amplifier is used in a paging system. When the amplifier has already powered

down, the first syllable might be cut off as the amplifier wakes up from standby mode.

• If fhe input signal is so quiet that the level remains below the input signal detection

threshold for 25 minutes, the timer would cut the audio in the middle of playback by
placing the amplifier into standby mode.

To defeat the auto power-down timer, follow these instructions:

1. Disconnect power from the amplifier.

2. Remove the nine cover screws that secure the top enclosure cover to the NetPA AT.

Three screws on top and three screws on each side, as shown below.

NetPA 502 AT

2

8Ω/4Ω OUTPUTS

1

AT

RESET

CLASS 2 WIR ING

REMOTE

STANDBY

2

LINE OUT

G

1

GAIN

2

-2

-4
0

-6
+2

1

+4

-8

-2

-4
0

+6

-6
+2

+4

-8

-

-12
+6

-20

-

100-240V x.yAMAX

move9Screws

50-60Hz

ATTENTION: Exercise caution when removing the screws to avoid stripping the

screw heads.

ATTENTION : Faites attention en enlevant les vis an d’éviter d’abîmer les têtes de vis.

3. Slide the top enclosure cover forward so that the front panel end of the cover slides

away from the rear panel end of the chassis then lift off the cover.

NetPA AT Series User Guide • Reference Information 33

4. The circuit board nearest the rear of the NetPA AT has a jumper to enable or disable

TIMER

ENABLE

TIMER

DISABLE

the power-down timer. By default, the jumper is set to enable (the jumper set on the
leftmost pins). Setting the jumper on the rightmost pins disables the power-down timer.

ATTENTION: Do not touch the electronic components or the connectors on the

backplane or on the circuit boards without being electrically grounded.

ATTENTION : Ne pas toucher les composants électroniques ou les connecteurs

sur la carte mère ou sur les circuits imprimés sans être électriquement relié à la
terre.

5. Enable the power-down timer by placing the jumper on the two leftmost pins. Disable

the power-down timer by placing the jumper on the two rightmost pins.

Rear Panel

TIMER
DISABLE

TIMER
ENABLE

Jumper

Timer

Timer

Enable

Disable

6. Replace the top cover using 9 cover screws that were removed previously in step 2 (3

top screws and 3 screws on each side).

NetPA AT Series User Guide • Reference Information 34

Extron Warranty

Extron Electronics warrants this product against defects in materials and workmanship for a period of three years
from the date of purchase. In the event of malfunction during the warranty period attributable directly to faulty
workmanship and/or materials, Extron Electronics will, at its option, repair or replace said products or components,
to whatever extent it shall deem necessary to restore said product to proper operating condition, provided that it is
returned within the warranty period, with proof of purchase and description of malfunction to:

USA, Canada, South America,
and Central America:

Extron Electronics
1230 South Lewis Street
Anaheim, CA 92805
U.S.A.

Europe and Africa:

Extron Europe
Hanzeboulevard 10
3825 PH Amersfoort
The Netherlands

Japan:

Extron Electronics, Japan
Kyodo Building, 16 Ichibancho
Chiyoda-ku, Tokyo 102-0082
Japan

China:

Extron China
686 Ronghua Road
Songjiang District
Shanghai 201611
China

Asia:

Extron Electronics Asia Pte Ltd
135 Joo Seng Road, #04-01
PM Industrial Bldg.
Singapore 368363

Middle East:

Extron Middle East
Dubai Airport Free Zone
F12, PO Box 293666
United Arab Emirates, Dubai

Singapore

This Limited Warranty does not apply if the fault has been caused by misuse, improper handling care, electrical
or mechanical abuse, abnormal operating conditions, or if modifications were made to the product that were not
authorized by Extron.

NOTE: If a product is defective, please call Extron and ask for an Application Engineer to receive an RA (Return

Authorization) number. This will begin the repair process.

USA: 714.491.1500 or 800.633.9876 Europe: 31.33.453.4040
Asia: 65.6383.4400 Japan: 81.3.3511.7655

Units must be returned insured, with shipping charges prepaid. If not insured, you assume the risk of loss or damage
during shipment. Returned units must include the serial number and a description of the problem, as well as the
name of the person to contact in case there are any questions.

Extron Electronics makes no further warranties either expressed or implied with respect to the product and its quality,
performance, merchantability, or fitness for any particular use. In no event will Extron Electronics be liable for direct,
indirect, or consequential damages resulting from any defect in this product even if Extron Electronics has been
advised of such damage.

Please note that laws vary from state to state and country to country, and that some provisions of this warranty may
not apply to you.

Extron Headquarters

+1.800.633.9876 (Inside USA/Canada Only)

Extron USA - West Extron USA - East
+1.714.491.1500 +1.919.850.1000
+1.714.491.1517 FAX [phone] FAX

Extron Europe

+800.3987.6673
(Inside Europe Only)

+31.33.453.4040
+31.33.453.4050 FAX

© 2015 Extron Electronics All rights reserved. www.extron.com

Extron Asia

800.3987.6673
(Inside Asia Only)
+65.6383.4400
+65.6383.4664 FAX

Extron Japan

+81.3.3511.7655
+81.3.3511.7656 FAX

Extron China

+4000. 398766
(Inside China Only)

+86.21.3760.1568
+86.21.3760.1566 FAX

Extron Middle East

+971.4.299.1800
+971.4.299.1880 FAX

Extron Korea

+82.2.3444.1571
+82.2.3444.1575 FAX

Extron India

1800.3070.3777
(Inside India Only)

+91.80.3055.3777
+91.80.3055.3737 FAX