Focusrite RedNet Bedienungsanleitung

System User Guide

www.focusrite.com

FA0458-02

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 are provided for your safety. If the provided

plug does not ﬁt into your outlet, consult an electrician for replacement of the obsolete outlet.

10. Protect the power cord from being walked on or pinched particularly at plugs, convenience

receptacles, and the point where they exit from the apparatus.

11. Only use attachments/accessories speciﬁed by the manufacturer.

12. Use only with the cart, stand, tripod, bracket, or table speciﬁed by the manufacturer,

or sold with the apparatus. When a cart is used, use caution when moving the cart/

apparatus combination to avoid injury from tip-over.

13. Unplug this apparatus during lightning storms or when unused for long periods of time.

14. Refer all servicing to qualiﬁed service personnel. Servicing is required when the apparatus

has been damaged in any way, such as power-supply cord or plug is damaged, liquid has

been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain

or moisture, does not operate normally, or has been dropped.

15. No naked ﬂames, such as lighted candles, should be placed on the apparatus.

The appliance coupler is used as the disconnect device, the disconnect device shall remain readily

operable.

Do not use a damaged or frayed power cord.

If the mains plug supplying the apparatus incorporates a fuse then it should only be replaced with a fuse

of identical or lower rupture value.

The apparatus shall be connected to a mains socket outlet with a protective earthing connection.

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Apparatet må tikoples jordet stikkontakt

Apparaten skall anslutas till jordat uttag

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ENVIRONMENTAL DECLARATION

For USA

To the User:

1. Do not modify this unit! This product, when installed as indicated in the instructions contained in this manual, meets

FCC requirements. Modiﬁcations not expressly approved by Focusrite may void your authority, granted by the FCC, to

use this product.

2. Important: This product satisﬁes FCC regulations when high quality shielded cables are used to connect with other

equipment. Failure to use high quality shielded cables or to follow the installation instructions within this manual may

cause magnetic interference with appliances such as radios and televisions and void your FCC authorization to use this

product in the USA.

3. Note: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to

part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a

commercial environment. 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. Operation of

this equipment in a residential area is likely to cause harmful interference in which the user will be required to correct

the interference at his own expense

For Canada

To the User:

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

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

The exclamation point within an equilateral triangle is intended to alert the user

to the presence of important operating and maintenance (servicing) instructions

in the literature accompanying the appliance.

WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS APPARATUS

TO RAIN OR MOISTURE AND OBJECTS FILLED WITH LIQUIDS, SUCH AS VASES, SHOULD NOT BE

PLACED ON THIS APPARATUS.

The lightning ﬂash with arrowhead symbol, within equilateral triangle, is intended

to alert the user to the presence of uninsulated “dangerous voltage” within the

product’s enclosure that may be of sufﬁcient magnitude to constitute a risk of

electric shock to persons.

CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE COVER

(OR BACK). NO USER-SERVICEABLE PARTS INSIDE.

REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.

Compliance Information Statement: Declaration of Compliance procedure

Product Identiﬁcation: Focusrite RedNet

Responsible party: American Music and Sound

Address: 4325 Executive Drive

Suite 300

Southaven

MS 38672

Telephone: 800-431-2609

This device complies with part 15 of the FCC Rules. Operation is subject to the 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.

RoHS Notice

Focusrite Audio Engineering Limited has conformed where applicable, to the European Union’s Directive 2002/95/EC on Restrictions

of Hazardous Substances (RoHS) as well as the following sections of California law which refer to RoHS, namely sections 25214.10,

25214.10.2, and 58012, Health and Safety Code; Section 42475.2, Public Resources Code.

TABLE OF CONTENTS

IMPORTANT SAFETY INSTRUCTIONS ..............................................2

INTRODUCTION ................................................................ 5

About this User Guide .........................................................5

Overview ....................................................................6

RedNet System Components ...................................................6

MINIMUM SYSTEM REQUIREMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Network Requirements........................................................8

INSTALLATION GUIDE ..........................................................10

Unit Connections and Features ................................................10

Getting Started..............................................................11

Hosting RedNet .............................................................11

Constructing a RedNet system.................................................12

Example RedNet studio setups ................................................14

OPERATION WITH REDNET CONTROL.............................................18

Using Dante Virtual Soundcard ................................................22

Using Dante Controller .......................................................22

APPENDIX....................................................................26

Registering your product .....................................................26

Customer Support ...........................................................26

Troubleshooting .............................................................26

INTRODUCTION

Thank you for investing in the Focusrite RedNet system.

RedNet is a powerful, low latency, digital audio networking system designed speciﬁcally for music,

recording studio and broadcast applications. It is based on Audinate’s Dante™, a well-established

audio networking technology known for its extreme robustness. Dante - and the RedNet system -

is capable of transporting up to 512 channels of bidirectional audio (at 48 kHz sample rate) over a

single Ethernet link. The number of channels available in your DAW will depend on the host method

being used.

RedNet brings Dante technology into the studio as the basis of a complete system. RedNet is a

range of extremely high quality analogue and digital audio interfaces and components that do a

great deal more than simply allow you to connect your digital studio through an Ethernet network:

they will revolutionise the way you work in other ways too. Importantly, Dante is non-proprietary;

this means it will work with any ASIO- or Core Audio-compliant DAW software, including Pro Tools,

Logic, Cubase and Nuendo.

If you are a musician or an engineer currently using USB or FireWire-based interfaces, RedNet will

give you a more reliable, powerful and professional system infrastructure. RedNet is a great solution

in facilities where long cable runs are involved and/or there is a requirement to routinely reconﬁgure

the various rooms making up a facility. It also has the advantage of only needing a standard network

cable to interconnect all the I/O throughout the system, minimising installation time and impact on

a building.

RedNet allows system components to be controlled remotely via RedNet software on a host

computer. Input and output interfaces can be placed anywhere on the network and hot-swapped:

RedNet automatically recognises and reconﬁgures replacement units as soon as they appear.

ABOUT THIS USER GUIDE

A copy of this System User Guide is packed with each of the hardware interfaces in the RedNet range.

The Guide provides a detailed explanation of the RedNet system to help you achieve a thorough

understanding of its capabilities; this includes the installation and use of the RedNet PCIe card, which

will be a central component in many RedNet systems. We recommend that all users, including those

already experienced in digital audio networking, take the time to read through this Guide so that you

are fully aware of all the possibilities that RedNet and its software has to offer. If the Guide does not

provide the information you need, be sure to consult www.focusrite.com/rednet, which contains a

comprehensive collection of common technical support queries.

Note that this System User Guide does not include a detailed description of the various interfaces; a

separate User Guide speciﬁc to each interface is supplied with every unit, in addition to the System

User Guide. Much of the installation and operation of a RedNet system revolves around setting up and

conﬁguring the system itself – these are factors which are common to all RedNet components. The

examples used in this System User Guide necessarily use particular RedNet units, but you should

not be concerned if your system does not include the same units – the principles of operation as far

as the overall system concept is concerned is applicable to all RedNet hardware.

OVERVIEW

Focusrite RedNet Audio Networking - key features

• Digital audio networking developed speciﬁcally for studios

• Scalable, up to 512 bidirectional audio channels per link (at 48 kHz)

• Choice of various analogue and digital I/O interfaces

• Supports as many interfaces as required

• Pristine audio quality with low latency

• Round trip latency less than 3 ms with RedNet PCIe card

• Based on DanteTM - proven reliability and robustness

• 24-bit, up to 192 kHz sample rate

• Very simple to conﬁgure

• Hot-swappable interfaces

• Remote control of all interfaces via included RedNet control software

• Supports any open DAW package, including ProTools, Logic and Nuendo

• Mac and Windows compatible

REDNET SYSTEM COMPONENTS

A RedNet system requires both hardware and software components. The RedNet hardware range

currently consists of various models of I/O interface and a PCIe digital audio interface card which

is installed in the system’s host computer. All the I/O units can be considered as “Break-Out” (and/

or “Break-In”) boxes to/from the network, and all are built in mains-powered, 2U 19” rackmounting

housings.

There are three software items for installation on the host computer: RedNet Control, Dante Controller

and Dante Virtual Soundcard. RedNet Control is required for all systems and Dante Controller is a

useful accessory but familiarity with it is not absolutely essential for operation of simpler systems.

Dante Virtual Soundcard is an optional software alternative to the RedNet PCIe card, and allows

the creation of RedNet systems without a dedicated computer interface card. Systems based on

Dante Virtual Soundcard have a lower channel capacity and a slightly inferior latency performance

compared to systems using the PCIe card.

RedNet I/O interfaces

A variety of audio interfaces is available for the RedNet system, including mic preamps, analogue

line level I/O and various interfaces catering for digital protocols. For more information please visit:

www.focusrite.com/rednet

Full details of each RedNet interface can also be found in the User Guides supplied with each unit.

RedNet PCIe card

The RedNet PCIe (PCI Express) card is an optional hardware interface between the Ethernet network

interconnecting the various I/O units in a RedNet system, and the host computer. When installed in

a 4-lane (minimum) PCIe card slot in either a PC or Mac, it allows up to 128 channels to be sent to/

from the DAW through its on-board Ethernet port. A system latency of less than 3 ms is possible with

the PCIe card, but to achieve this, we recommend the use of a 16-lane PCIe card slot. Note also that

system latency in all cases will be dependent on buffer size, sample rate and processor power.

The computer into which the card is ﬁtted will require RedNet Control to be installed. The Ethernet

port on the PCIe card should be connected to the network via a Gigabit Ethernet switch, and the host

computer’s native Ethernet port should be connected to another port on this same switch. In this

arrangement, the PCIe card’s Ethernet port handles all the audio and the native port handles the

control data between RedNet Control and the remote RedNet I/O units.

RedNet Control

RedNet Control is the software application which lets the user conﬁgure the RedNet system and

control each individual RedNet I/O device, whatever its physical location. RedNet Control versions

for both PC and Mac are available as downloads from the Focusrite website – see “Installing RedNet

Control” on page 13.

All RedNet devices on the network are auto-detected by the RedNet Control software, and visualised

on-screen along with their various controls and settings. Blocks of audio channels can be re-routed

and system conﬁgurations can be saved and reloaded as required.

Dante Controller

Dante Controller software is Audinate’s proprietary generic audio routing application for use with

Dante digital audio networked devices. Installation of Dante Controller is automatic; it will be

installed as part of the RedNet Control software installation. Many simple RedNet conﬁgurations

will not require its use, as the control capabilities of RedNet Control will be adequate. However,

additional, advanced routing possibilities, which cannot be achieved with RedNet Control alone are

possible with Dante Controller.

Dante Virtual Soundcard

Dante Virtual Soundcard is a software alternative to the RedNet PCIe card. It allows users who do

not require the extremely low latency and high channel count possible with the RedNet PCIe card to

implement and control RedNet systems. A maximum of 64 channels (in each direction) is possible,

at a typical latency of 7 ms (buffer size and sample rate dependent).

Dante Virtual Soundcard can be downloaded directly from www.audinate.com. (On-line registration

is required.)

Using RedNet with other Dante-compatible products

As RedNet is based on Audinate’s Dante system, it is compatible with Dante-enabled devices from

other manufacturers. However, note that when using RedNet devices with other Dante-enabled

products, you may be limited to sample rates of 48 or 96 kHz, as many other devices do not support

the full range of sample rate options offered by RedNet.

MINIMUM SYSTEM REQUIREMENTS

In general terms, computers running the following operating systems will allow a RedNet system to

deliver satisfactory performance (but see important note below):

Mac

Apple Mac with OSX 10.7 (Lion), 10.8 (Mountain Lion) or later. Please note that RedNet is not supported

by Mac PPC.

Min. 2 GB RAM

Dual core Intel Processor (Quad core recommended)

PC running Windows 7 or Windows 8 (32- or 64-bit). Please note that RedNet is not supported by

Windows Vista.

Min. 2 GB RAM

Dual Core processor (Quad core recommended)

IMPORTANT: Focusrite have evaluated a number of speciﬁc models of computer for use with RedNet

systems, and recommend the use of one of these if highest system performance is essential (i.e.,

lowest latency at maximum channel count). Users should check www.focusrite.com/rednet for the

latest information regarding speciﬁcations of suitable computers.

NETWORK REQUIREMENTS

The Audinate DanteTM protocol on which RedNet is based uses standard Ethernet technology for the

network. Although RedNet trafﬁc can be mixed with other network data, we recommend that for

maximum performance the Ethernet network used for RedNet audio should be self-contained and

not used for other IT purposes.

The network topology employed will be dictated by user requirements and building layout.

RedNet is compatible with both CAT 6 and CAT 5e cabling, though CAT 6 STP is preferred. RJ45

connectors with metal screens should be used, with the cable screen bonded to the connector screen.

Gbit Switch requirements

The switches used in a RedNet network should be of the ‘managed’ type, and designed for use in

1000 Mbps (Gigabit) systems. Un-managed switches may prevent correct RedNet network

conﬁguration. A switch with an internal PSU (i.e., requiring direct connection to AC mains) is

also recommended; the external “plug-top” PSUs supplied with cheaper units may be prone to

interference which could generate audible artefacts in the audio.

Numerous makes/models of Gigabit switch have been found to operate satisfactorily with Dante

systems. Recommended manufacturers include Linksys, Dell, HP and Cisco. Note the following

features are required when selecting a switch for use with a RedNet network:

• Gigabit (1000 Mbps) ports

• Quality of Service (QoS) with 4 queues

• Diffserv (DSCP) QoS, with strict priority

• A managed switch is also recommended, to provide detailed information about the operation

of each network link: port speed, error counters, bandwidth used, etc.

Additional information on switch requirements can be found at www.focusrite.com/rednet.

A note about Latency

No digital audio system is “instantaneous”; the term “latency” is used to express the time by which

the audio is delayed in travelling through the system. In practice, latency only becomes a problem

when mixing signals from systems having signiﬁcantly different delays. The Dante protocol used by

RedNet exhibits very low latency, and you should not experience any problems in normal recording

practice when using it for multichannel audio transport between a DAW and sources or monitoring.

With the RedNet PCIe card in use, round-trip latency can be less than 3 ms (depending on buffer

size and sample rate). If you are using Dante Virtual Soundcard instead of the RedNet PCIe card,

additional processing time is required by the computer. However, you should achieve the same order

of latency as with a FireWire interface.

The precise latency of any given system will be determined by a number of factors, including the

processing speed of the computer, the number of switches in the network, the make/model of switch

used and the network topology.

INSTALLATION GUIDE

UNIT CONNECTIONS AND FEATURES

RedNet I/O interfaces

Full details of the front panel controls, indicators and rear panel connections of the various RedNet

hardware interfaces will be found in the separate User Guide supplied with each unit.

Rednet PCIe card

1432

1. RJ45 network socket. Connect this to the Gigabit network switch local to the computer. The

port is the primary interface for all the channels of audio on the RedNet network. The socket

has integral LEDs which illuminate to indicate connection to an active network port, and

network activity.

2. SYS – multi-colour LED indicating the card’s Dante system status:

• Green – normal operation

• Orange – system failure

3. CLK – multi-colour LED indicating the card’s sync status:

• Green (steady) – conﬁrms card is a Dante PTP slave; the card will sync to the clock embedded

in the incoming Dante bitstream

• Green (blinking) – conﬁrms card is a Dante PTP master; the card is set (in Dante Controller)

to generate the Dante clock which will be used by other units.

• Orange – sync failure

4. ERR – reserved for future use.

NOTE: additional LED displays are thus:

• All LEDs red – card has entered failsafe mode. If this situation occurs, users are recommended

to contact Focusrite Customer Support.

• All LEDs blinking green – identify function has been activated from Dante Controller.

The RedNet PCIe card is a standard single-width PCIe card which will ﬁt an empty card slot in a PC

or Mac. The slot used must be “4-lane” minimum, though 16-lane is necessary to achieve maximum

performance. Please check your computer’s motherboard documentation if you are unsure of the

slot speciﬁcation.

The RedNet PCIe card is powered by the computer in which it is installed. It conforms to the PCIe

card supply voltage standard, and provided your computer’s PSU is working normally, you should

experience no power-related issues with any computer.

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