Midas Refrigerator Dl451 Users Manual Modular I/O

DL451 DL451

XL8, DL451 - Input-Output Box ver B XL8, DL451 - Input-Output Box ver B

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DL451 Modular I/O

Operator Manual

Midas Klark Teknik Limited,

Klark Industrial Park,

Walter Nash Road,

Kidderminster.

Worcestershire.

DY11 7HJ.

England.

Tel: +44 1562 741515

Fax: +44 1562 745371

Email: info@midasklarkteknik.com

Website: www.midasconsoles.com

DL451 Modular I/O — Operator Manual

DOC02-DL451 Issue B — April 2010

© Red Chip Company Ltd.

In line with the company’s policy of continual improvement, specifications and function may be

subject to change without notice. This document was correct at the time of writing. E&OE.

IMPORTANT SAFETY INSTRUCTIONS

The lightning flash with arrowhead symbol within an 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.

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 product.

1Read these instructions.

2Keep these instructions.

3Heed all warnings.

4Follow all instructions.

5Do not use this apparatus near water.

6Clean only with a dry cloth.

7Do not block any of the ventilation

openings. Install in accordance with the

manufacturer’s instructions.

8Do not install near any heat sources such

as radiators, heat registers, stoves, or

other apparatus (including amplifiers) that

produce heat.

9Do 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 Unplug this apparatus during lightning

storms or when unused for long periods of

time.

13 Refer all servicing to qualified 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 Use the mains plug to disconnect the

apparatus from the mains.

15 Warning: To reduce the risk of fire or

electric shock, do not expose this

apparatus to rain or moisture.

16 Warning: Do not expose this

equipment to dripping or splashing

and ensure that no objects filled with

liquids, such as vases, are placed on

the equipment.

17 Warning: The mains plug of the power

supply cord shall remain readily

operable.

Midas

DOC04-DL451ECDOC Rev. B

EC-Declaration of Conformity

The undersigned, representing the following manufacturer

Manufacturer: Address:

Midas Klark Teknik Ltd. Klark Industrial Park, Walter Nash Road,

Kidderminster. Worcestershire. DY11 7HJ.

hereby declares that the following product

Product Type Number Product Description Nominal Voltage(s) Current Freq.

DL451 Audio System Modular I/O 115V AC

230V AC

0.5A

0.3A

50/60Hz

is in conformity with the regulations of the following marked EC-directives and bears the

-mark accordingly

reference number title

2004/108/EC EMC Directive (EMC)

2006/95/EC Low-Voltage Directive (LVD)

The conformity of the product with EC Directives for use in environment E4 is provided by compliance with

the following standards:

Standards/date:

Applied Electrical Safety test standards:

reference number title

EN 60065:2002 Audio, video and similar electronic apparatus. Safety requirements

Applied EMC emission test standards:

ref. no. title

EN 55103-1:1996

Class A

EN 55103-1 Annex A: Radiated

magnetic disturbance, 50Hz-50kHz

CISPR 22: Radiated disturbance,

30-1000MHz

CISPR 22: Conducted disturbance,

ac & signal ports

CISPR 16: Discontinuous

disturbance

EN 61000-3-2:2000 Mains

harmonics

EN 61000-3-3:1995 Mains voltage

flicker

Applied EMC immunity test standards:

ref. no. title

EN 61000-4-2:1995 Electrostatic

discharge

EN 55103-2:1996

Class A

EN 61000-4-3:1996: Radiated RF

disturbance, 80-1000MHz

EN 55103-2 Annex A: Magnetic LF

disturbance, 50Hz–10kHz

EN 61000-4-4:1995: Fast transient

bursts, ac & signal ports

EN 61000-4-5:1995: Surge, ac port

EN 61000-4-6:1996: Conducted RF

field, ac & signal ports

EN 61000-4-11:1994: Mains voltage

dips and interruptions

Place, date: Kidderminster, UK

15th April 2010

General Manager AVP, Product Development

Printed name: John Oakley Printed name: Alex Cooper

Licences

The following are the license agreements applicable to the Midas Digital Equipment.

End-User Licence Agreement for Midas™ and Klark Teknik™ Software

IMPORTANT - Please read this document carefully before using this Midas™ or

Klark Teknik™ Product. This is an agreement governing your use of software or

other machine instructions already installed on this Midas™ or Klark Teknik™

Product, as well as other software that we provide for installation on this Product.

The Midas™ or Klark Teknik™ Product will not operate in accordance with its

documentation without this software.

THIS AGREEMENT ("AGREEMENT" OR "LICENCE") STATES THE TERMS AND CONDITIONS UPON WHICH

MIDAS KLARK TEKNIK LIMITED ("COMPANY") OFFERS TO LICENSE THE INSTALLED FIRMWARE,

SOFTWARE AND/OR PROGRAMS ("the SOFTWARE") WITH THE MIDAS™ OR KLARK TEKNIK™ CONSOLE

OR SIGNAL PROCESSING PRODUCT ("PRODUCT") IN WHICH IT HAS BEEN INSTALLED BY, OR FOR

WHICH IT IS PROVIDED BY, THE COMPANY. BY USING THIS PRODUCT YOU WILL BE AGREEING TO

BECOME BOUND BY THE TERMS OF THIS LICENCE. IF YOU DO NOT AGREE TO THE TERMS OF THIS

LICENCE, DO NOT USE THIS PRODUCT AND PROMPTLY RETURN THE PRODUCT TO THE PLACE WHERE

YOU OBTAINED IT FOR A FULL REFUND. You agree to notify any persons whom you permit to operate

this Product of the terms of this Licence, and to require them to comply with these terms.

The Software is licensed, not sold, to you for use only under the terms of this Licence, and the

Company reserves all rights not expressly granted to you. The Company retains ownership of all copies

of the Software itself, and all proprietary parts of it, including those stored on or in the Product.

1. Licence: Subject to the terms and conditions of this agreement, the Company grants you, and

other persons you permit to operate the Product, a personal, limited, non-exclusive,

non-transferable licence to use the Software only on the single Product unit in which it has been

installed.

2. Restrictions: (a) The Software, and the accompanying written materials, are copyrighted and

contain trade secrets and other proprietary matter, including confidential information relating to

the specifications and performance characteristics of this Product. Save for such elements as

may be licensed to the Company, as described in paragraph 5, all rights to copyrights, trade

marks and trade secrets in the Software, or any modifications to it, are owned by the Company.

Unauthorised use or copying of the Company's proprietary Software, or any portion thereof, or

copying of those written materials, is prohibited. (b) You may not create, market, distribute, or

transfer copies of the Company's proprietary Software, or any part of it, to others, or duplicate,

rent, lease or loan that Software, or any part of it, except that you may transfer that Software

installed in this Product in conjunction with the sale, transfer, loan, rent or lease of this Product,

and subject at all times to this Licence. YOU MAY NOT REVERSE ENGINEER, DECOMPILE,

DISASSEMBLE, EXTRACT OR SEPARATE OUT, MODIFY, ADAPT, PORT, OR TRANSLATE THE

SOFTWARE, DERIVE THE SOURCE CODE OF THE SOFTWARE OR CREATE DERIVATIVE WORKS

BASED ON THE SOFTWARE OR ANY ACCOMPANYING WRITTEN MATERIALS, save as is allowed by

licences pertaining to component parts of the Software which are licensed by third parties, as

described under paragraph 5, or otherwise by law. (c) In the event you violate any term of this

Licence, all rights granted herein will automatically and immediately terminate and you must stop

using the Software and destroy any copies of the Software.

3. Limited Warranty: Subject to your installation of any Software updates issued by the Company

as described herein, and the condition below, the Company warrants that the Software will

operate in compliance with the Software's material specifications and documentation for a period

of 90 days from your purchase of this Product. The Software is provided "as is" and the Company

does not warrant that the operation of the Software will meet your requirements or operate free

from error. To the greatest extent permissible by law, the Company DISCLAIMS ALL

WARRANTIES AND CONDITIONS, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES

OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, NON-INFRINGEMENT OF THIRD

PARTY RIGHTS OR CAPABILITY OF CORRECTLY PROCESSING PROVIDING AND/OR RECEIVING

DATE INFORMATION. You understand that the Company may update or revise the Software but

in so doing incurs no obligation to furnish such updates to you. However, the Company may in its

discretion make updates available from time to time upon such terms and conditions as it shall

determine. It is a condition of the above warranty that you install any such Software updates, as

may be issued from time to time by the Company for the Software, in accordance with the

Company's instructions, and if you do not do so such warranty will cease to apply. You may view

current Software updates at http://www.klarkteknik.com and http://www.midasconsoles.com.

4. Limited Liability: THE ENTIRE RISK ARISING OUT OF YOUR USE OR PERFORMANCE OF THE

SOFTWARE REMAINS WITH YOU. THE LIABILITY OF THE COMPANY FOR ANY CLAIMS ARISING

OUT OF THIS LICENCE AND/OR BASED UPON THE SOFTWARE, REGARDLESS OF THE FORM OF

ACTION, AND INCLUDING WORK STOPPAGE, PRODUCT FAILURE OF MALFUNCTION OR ANY

OTHER COMMERCIAL LOSS OR DAMAGE, SHALL NOT EXCEED THE COST OF THE LICENCE FEE

FOR THE SOFTWARE OR THE COST OF THIS PRODUCT. SUBJECT TO THE PROVISIONS OF

APPLICABLE LAW, IN NO EVENT SHALL THE COMPANY BE LIABLE FOR ANY LOSS OF DATA, LOST

OPPORTUNITY OR PROFITS, COST OF COVER OR SPECIAL, INCIDENTAL, CONSEQUENTIAL, OR

INDIRECT DAMAGES, EVEN IF YOU ADVISE THE COMPANY OF THE POSSIBILITY OF SUCH

DAMAGES. THIS IS A FUNDAMENTAL TERM OF THIS AGREEMENT AND YOU ACKNOWLEDGE

THAT THE AMOUNT YOU PAID FOR THE SOFTWARE AND/OR THE PRODUCT REFLECTS THIS

ALLOCATION OF RISK. NOTHING IN THIS PARAGRAPH PURPORTS TO EXCLUDE OR LIMIT THE

COMPANY'S LIABILITY FOR DEATH OR PERSONAL INJURY CAUSED BY NEGLIGENCE OR ANY

OTHER LIABILITY WHICH CANNOT BE EXCLUDED OR LIMITED BY LAW.

5. Other Third-Party Computer Programs: As referred to herein, the term "Software" refers

only to proprietary Midas™ or Klark Teknik™ software, owned by the Company, that has been

provided to you for installation on, or already installed in, a Product. In addition to the Software,

you may have also been provided, at no additional charge, with a version of the widely-available

GNU Linux Operating System, which is a modular operating system made up of hundreds of

individual software components, each of which was written, and the copyright and other rights in

which are owned individually, by various parties (collectively, "the GNU Linux Programs"). Each

component has its own applicable end user licence agreement, and many of these agreements

permit you to copy, modify, and redistribute the applicable software, but you must review the

on-line documentation that shares a directory or otherwise accompanies each of the GNU Linux

Programs provided to you for the specific terms and conditions. Nothing in this Licence limits

your rights under, or grants you rights that supersede, the terms of any other applicable end user

licence agreement. If you wish to receive a computer-readable copy of the source code for any

of the GNU Linux Programs that have been provided with your Midas™ or Klark Teknik™ Product,

send a cheque or money order (no cash accepted), your address and [£10.00] to cover the cost

of optical media, postage and handling, to:

Midas Klark Teknik Limited

ATTN: Linux Programs CD for Midas™/Klark Teknik™

Walter Nash Road,

Kidderminster.

Worcestershire.

DY11 7HJ.

England.

In your request, indicate your Product's name and model number, serial number and

version/release information. In your request, also indicate the relevant Software version/release

information. This offer, made pursuant to the GNU Linux Programs' end user licence agreements,

may expire according to the terms of those agreements, in which case your cheque will be

returned to you or destroyed at our option. Please note that the GNU Linux Programs that may

be available to you under this offer consists of the GNU Linux Operating System components only

and none of the proprietary application software developed by Midas or Klark Teknik is included.

Other updated Linux distributions containing application software are widely available from a

variety of Internet sources, and are often available at minimal or no cost.

6. Termination: This Licence will terminate immediately if you violate any of the Licence terms.

Upon termination you must discontinue use of the Software, and either destroy, erase or return

to Company all copies of the Software in your possession, custody or control, including those in

or on the Product.

7. General: This Licence constitutes the entire agreement between you and the Company with

respect to this Software and, save in the case of fraud, supersedes any other communication

(including advertising). Company reserves all rights not expressly granted to you in this licence.

If any provision of this Licence is held unenforceable, that provision shall be enforced to the

maximum extent permissible so as to give effect the intent of this Licence, and the remainder of

this Licence shall continue in full force and effect. This Licence shall be governed by English law

and the Courts of England and Wales will have exclusive jurisdiction to hear and decide any

dispute concerning it or its formation. No breach by you of any provision of this Licence shall be

waived or discharged except with the express written consent of the Company and no failure or

delay by the Company to exercise any of its rights under this Licence shall operate as a waiver

thereof and no single or partial exercise of any such right shall prevent any other or further

exercise of that or any other right. You acknowledge that the Company could be irreparably

damaged if the terms of this Licence were not specifically enforced, and agree that the Company

may seek appropriate equitable remedies with respect to breaches of this Licence, including

injunctive relief, in addition to such other remedies as the Company may otherwise have

available to it under applicable laws.

GNU General Public License (GPL)

For details of the Third Party Software License Attribution, Copyright and Terms and Conditions and

Notices, and the GNU LESSER GENERAL PUBLIC LICENSE, see the Midas Digital Equipment GNU

General Public License (GPL) Booklet part number DOC04-GPL issue A.

xi

DL451 Modular I/O

Operator Manual

Precautions

Before installing, setting up or operating this equipment, make sure that you have read

and fully understand all of this section and the “IMPORTANT SAFETY INSTRUCTIONS” at

the front of this manual.

This equipment is supplied by a mains voltage that can cause electric shock injury!

The following must be observed in order to maintain safety and electromagnetic compatibility (EMC)

performance.

Safety warnings

Signal 0V is connected internally to the

chassis.

To electrically isolate the equipment,

switch off the mains on/off switch at the

rear of unit. Make sure that the power at

the mains outlet is off, and then disconnect

the mains cable from the mains outlet.

To avoid electrical shock do not remove

covers.

The power supplies - even the DC ones -

have a high current!

General precautions

In the event of ground loop problems,

disconnect the signal screen at one end of the

connecting cables. Note that this can only be

done when the equipment is used within a

balanced system.

Do not remove, hide or deface any warnings or

cautions.

Power

The power supplies contain LETHAL VOLTAGES

greatly in excess of the mains voltage and that

its rails can produce extremely large currents

that could burn out equipment and wiring if

shorted.

The internal power supplies are of the switch

mode type that automatically senses the

incoming mains voltage and will work where the

nominal voltage is in the range 100VAC to

240VAC.

A mains inlet is provided on the rear panel. The

correct lead for connection in the area to which

the unit was shipped is supplied with the unit.

The equipment should only be plugged into the

mains outlet using the supplied lead.

When removing the equipment’s electric plug

from the outlet, always hold the plug itself and

not the cable. Pulling out the plug by the cable

can damage it.

Never insert or remove an electric plug with wet

hands.

Handling the equipment

Completely isolate the equipment electrically

and disconnect all cables from the equipment

before moving it.

Take great care when lifting or moving the

equipment and always take its size and weight

into consideration.

Do not insert your fingers or hand in any gaps or

openings on the equipment, for example, vents.

Avoid inserting or dropping foreign objects, such

as paper, plastic, metal etc., into any gaps or

openings on the equipment, for example, vents.

If this happens, turn off the power immediately

and unplug the power from the AC outlets.

Then have the equipment inspected by the

manufacturer's qualified service personnel.

Installation

Before installing the equipment:

• Make sure the equipment is correctly

connected to the protective earth conductor

of the mains voltage supply of the system

installation through the mains leads.

• Power to the equipment must be via a fused

spur.

• Power plug must be inserted in a socket

outlet provided with a protective earth

xii Precautions

DL451 Modular I/O

Operator Manual

contact. The electrical supply at the socket

outlet must provide appropriate

over-current protection.

• Both the mains supply and the quality of

earthing must be adequate for the

equipment.

• Before connecting up the equipment, check

that the mains power supply voltage rating

corresponds with the local mains power

supply. The rating of the mains power

supply voltage is printed on the equipment.

• Mount in rack only.

Location

• Ideally a cool area is preferred not in close

proximity to power distribution equipment

or other potential sources of interference.

• Do not install the equipment in places of

poor ventilation.

• Do not install this equipment in a location

subjected to excessive heat, dust or

mechanical vibration. Allow for adequate

ventilation around the equipment, making

sure that its fans and vents are not

obstructed. To prevent excessive heating of

the equipment, avoid mounting it directly

above power amplifiers or other devices

that radiate significant amounts of heat

such as, radiators and heaters. Keep the

equipment out of direct sunlight.

• Do not place the equipment in an unstable

condition where it might accidentally fall

over.

• Make sure that the mains voltage and fuse

rating information of the equipment will be

visible after installation.

Audio connections

To ensure the correct and reliable operation of

the equipment, only high quality balanced,

screened, twisted pair audio cable should be

used.

XLR connector shells should be of metal

construction so that they provide a screen

when connected to the console and, where

appropriate, they should have Pin 1 connected

to the cable screen.

Radio frequency

interference — Class A

device

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 when the equipment is operated

in a commercial environment. This equipment

generates, uses, and can radiate radio

frequency energy and, if not installed and used

in accordance with the instruction manual,

may cause harmful interference to radio

communications. Operation of this equipment

in a residential area is likely to cause harmful

interference in which case the user will be

required to correct the interference at his own

expense.

Electric fields

Caution:

In accordance with Part 15 of the FCC

Rules & Regulations, “… changes or

modifications not expressly approved by

the party responsible for compliance

could void the user's authority to operate

the equipment.”

Should this product be used in an

electromagnetic field that is amplitude

modulated by an audio frequency signal (20Hz

to 20kHz), the signal to noise ratio may be

degraded. Degradation of up to 60dB at a

frequency corresponding to the modulation

signal may be experienced under extreme

conditions (3V/m, 90% modulation).

Operation

To avoid electrical shock, never operate the

equipment with the covers removed.

Safety equipment

Never remove, for example, covers, housings

or any other safety guards. Do not operate

the equipment or any of its parts if safety

guards are ineffective or their effectiveness

has been reduced.

Precautions xiii

DL451 Modular I/O

Operator Manual

Optional equipment

Unless advised otherwise, optional equipment

must only be installed by service personnel

and in accordance with the appropriate

assembly and usage regulations.

Special accessories

To comply with part 15 of the FCC Rules, any

special accessories (that is, items that cannot

be readily obtained from multiple retail

outlets) supplied with this equipment must be

used with this equipment; do not use any

alternatives as they may not fulfil the RF

requirement.

xiv Precautions

DL451 Modular I/O

Operator Manual

xv

DL451 Modular I/O

Operator Manual

Contents

Information page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . i

IMPORTANT SAFETY INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . iii

EC-Declaration of Conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v

Licences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii

Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi

Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xv

Chapter 1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Warranty and registration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

About this manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Intended readers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Package contents/unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Chapter 2 Front Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Control panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

psu panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Ethernet control panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

AES50 audio panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Chapter 3 Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Rear panel connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Chapter 4 Getting Started. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Connecting up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Switching the unit on/off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Setting up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Chapter 5 Programming Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Menu navigation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Menu flowchart (options 1 to 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Menu flowchart (option 5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

1 AES clock menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2 Set ID menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

5 Digital boards menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

xvi Contents

DL451 Modular I/O

Operator Manual

Chapter 6 Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Default display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

Appendix A Functional Block Diagrams . . . . . . . . . . . . . . . . . . . . 21

Analogue input module (DL441) . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

Analogue output module (DL442) . . . . . . . . . . . . . . . . . . . . . . . . . . .22

Analogue Jack I/O module (DL443) . . . . . . . . . . . . . . . . . . . . . . . . . .23

AES/EBU digital I/O module (DL452) . . . . . . . . . . . . . . . . . . . . . . . . .24

Appendix B Technical Specification . . . . . . . . . . . . . . . . . . . . . . . 25

General specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

Inputs and outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

Analogue inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

Analogue outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

Digital inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

Digital outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

MIDI and GPIO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

Digital system inputs and outputs . . . . . . . . . . . . . . . . . . . . . . . . .26

Appendix C I/O Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

DL441 analogue input module . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

DL442 analogue output module . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

DL443 analogue Jack I/O module . . . . . . . . . . . . . . . . . . . . . . . . . . .30

DL452 digital I/O module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

Appendix D Replacing An I/O Module . . . . . . . . . . . . . . . . . . . . . 33

Replacing a module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

Appendix E Service Information . . . . . . . . . . . . . . . . . . . . . . . . . 35

Routine maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

Monthly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

Yearly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

Cleaning the LCD screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

Cleaning the internal fans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

Equipment disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36

Appendix F XL8 Live Performance System. . . . . . . . . . . . . . . . . . 37

Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

System components (standard supply) . . . . . . . . . . . . . . . . . . . . . . .40

System interconnections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41

FOH and MON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42

Mix matrix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43

Processing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43

Input channel processing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43

Mix channel processing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44

Output channel processing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44

Effects processing and GEQs . . . . . . . . . . . . . . . . . . . . . . . . . . . .45

Audio physical connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45

Uses of the configurable audio connections . . . . . . . . . . . . . . . . . . . .46

Surround capabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47

Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47

Contents xvii

DL451 Modular I/O

Operator Manual

Resilience to failure (redundancy) . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Control software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

GUI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Console linking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Integration of third party software . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Appendix G Setting Up An XL8 System . . . . . . . . . . . . . . . . . . . . . 55

Initial set-up procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Unpacking the equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Making up the racks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Outboard equipment racks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

Stage rack 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Wiring instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

XL8 system interconnections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

Cable type and function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

Powering the XL8 system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

Switching the XL8 Control Centre on/off . . . . . . . . . . . . . . . . . . . . . . 64

Setting up the ID of the DL4n1 units . . . . . . . . . . . . . . . . . . . . . . . . 65

xviii Contents

DL451 Modular I/O

Operator Manual

1

DL451 Modular I/O

Operator Manual

Chapter 1: Introduction

The DL451 Modular I/O is a three-unit (3U) high 19” rack unit that provides connection

of up to 24 audio inputs/outputs. It has a user-configurable modular1 3x8 XLR format

that can be configured as any combination of analogue mic/line in, analogue out and

digital in/out (AES/EBU). Musical instrument digital interface (MIDI) and general

purpose input/output (GPIO) connections are supplied as standard. The digital audio

interface is via dual-redundant AES50 connections. Five DL451’s are supplied with each

XL8 Live Performance System.

Your DL451 Modular I/O was conceived by Midas to offer audio professionals

high-performance audio equipment, designed to provide no-compromise sonic quality

with a feature set that offers all essential facilities and functions. It represents the very

best of British design and engineering combined with contemporary, efficient

manufacturing methods, and will give you many years of reliable service.

So, to obtain the best results with a minimum of effort, please read this operator

manual and, finally, enjoy your Midas DL451 Modular I/O!

Features

The DL451 Modular I/O comprises:

• Up to 24 audio inputs and 24 audio outputs.

• Modular construction providing user-configurable 3x8 XLR format.

• Fully isolated GPIO connections supplied as standard.

•in, out and thru MIDI sockets supplied as standard.

• Dual redundant AES50 connections provided at the digital audio interface.

Warranty and registration

Midas has total confidence in the quality and reliability of this product. To back this up,

this product comes with the standard Midas and Klark Teknik three year warranty.

Please take the time to register your product by completing and returning the

registration card or registering on our website at www.midasconsoles.com.

1. It is envisaged that new modules will be developed to service market requirements as they continue

to evolve.

2Chapter 1: Introduction

DL451 Modular I/O

Operator Manual

About this manual

This is the operation manual for the DL451 Modular I/O. It is intended to help get your

DL451 Modular I/O installed and in operation as quickly as possible by giving you

unpacking, installation, connection, setting up and operating instructions. To help

familiarise you with the DL451 Modular I/O there is a description of the front and rear

panels, along with easy-to-follow user instructions.

The following chapter gives a brief overview of the XL8 Live Performance System and

includes system interconnection details. However, if you want to learn more about the

XL8 Live Performance System, please go on to read the XL8 Control Centre operator

manual (part number DOC02-XL8), which provides a full and comprehensive guide.

Intended readers

This manual is aimed at professionals, such as front of house (FOH) and monitor (MON)

engineers who will be using this equipment in a live performance environment. It is

assumed that the reader has prior experience of using professional audio equipment

and has, most likely, undergone training on this system.

The DL451 Modular I/O forms an integral part of the XL8 Live Performance System.

The appendices in this manual contain a brief overview of the XL8 Live Performance

System and include system interconnection details. However, if you want to learn more

about the XL8 Live Performance System, see the Owner’s Manual (part number

DOC02-XL8), which provides a full and comprehensive guide.

Package contents/unpacking

Please retain the original packing for use should you need to transport or ship this unit.

After unpacking, please inspect the unit carefully for any signs of damage that may

have occurred in transit and notify the courier immediately if you feel that any damage

has occurred.

The following items are included in the DL451 Modular I/O package:

• 1-off DL451 Modular I/O Safety Sheet (part number DOC04-DL451).

• 1-off warranty card (part number DOC04-WARRANTY).

• 1-off mains lead (part number PWR21-MAINSLEAD).

3

DL451 Modular I/O

Operator Manual

Chapter 2: Front Panel

The front panel comprises various sections, as follows:

Control panel

The control panel is used for setting up the DL451 Modular I/O unit via a number of

menus in programming mode, and comprises an LCD panel and four buttons.

LCD screen has 32 characters (2 x 16), and is used with the adjacent programming

buttons to program the DL451 Modular I/O (see “Menu navigation” on page 9). It also

shows the default diplay during normal operation.

Each programming button illuminates with a blue backlight when pressed.

Item Description

1Air intakes for fan cooling. Do not obstruct.

2psu power supply unit monitoring panel (see “psu panel” on page 4).

3Ethernet control panel (see “Ethernet control panel” on page 4).

4AES50 audio panel monitors (see “AES50 audio panel” on page 4).

5Control panel containing LCD screen and four pushbuttons (see “Control

panel” below).

6Cut-outs for rack mounting fixings.

7Three rows of eight write-on strips for manually marking the A, B or C

module analogue/digital channel assignments.

3

6

7

2 4 5

11

LCD screen Programming

buttons

4Chapter 2: Front Panel

DL451 Modular I/O

Operator Manual

psu panel

This panel monitors the supply voltage. The panel LEDs

illuminate to show that the voltage rails are active. There are

five yellow LEDs, each one representing a particular voltage

supply, that is, +18V, -18V, +5V, +3.3V and +48V.

Ethernet control panel

The Ethernet control panel has two green LEDs, X and Y, which have

three states of illumination to indicate:

•Flashing - active master.

•On - connected.

•Off - not connected.

AES50 audio panel

In the AES50 panel, each X and Y channel has a green ok LED and red

error LED. These illuminate to indicate that the communications to these

channels is ok or that there is an error.

5

DL451 Modular I/O

Operator Manual

Chapter 3: Rear Panel

The rear panel comprises the following:

•Three module slots, A, B and C, which can contain any combination of modules (see

Appendix C "I/O Modules" on page 27).

• Two sets of Ethercon XLR X and Y sockets:

•Ethernet control.

•AES50 audio.

•Two USB connectors: host and slave.

• Three MIDI sockets: in, out and thru.

• Two GPIO sockets: in and out.

• Mains IEC socket and adjacent on/off switch.

Air outlets

Mains on/off switch

6Chapter 3: Rear Panel

DL451 Modular I/O

Operator Manual

Rear panel connections

Item Description

1Y and X AES50 audio Ethernet sockets for passing audio and control

data to/from router.

2Y and X Ethernet control Ethernet sockets for connection of ‘tunnelling’

Ethernet.

3USB slave (type B) and host (type A) sockets for connection of a laptop

PC.

4Three MIDI (musical instrument digital interface) sockets, in, out and

thru for connection of a musical instrument, such as a synthesiser. in

socket receives MIDI data. thru socket gives out the same MIDI data

that is received by the in socket. out socket gives out MIDI data

generated by the instrument itself.

5Two GPIO 25-way connectors, in and out, for control of external

devices.

6Mains IEC socket with on/off switch.

7Three user-configurable modules.

Laptop PC

21

Mains IEC

connector

3

6

54

7

7

DL451 Modular I/O

Operator Manual

Chapter 4: Getting Started

This section shows you how to connect up, switch on, set up and configure the DL451

Modular I/O unit.

Connecting up

Connect up the following, as appropriate, to the rear panel of your DL451 Modular I/O

unit:

•Inputs/outputs - connect up modules in slots A, B and C. These can be any

combination of modules DL441, DL442 and DL452; see page 5 in Chapter 3 ”Rear

Panel”.

•AES50 - connect the AES50 audio X and Y sockets to the appropriate AES50

audio sockets on the X and Y routers.

•Ethernet - connect the Ethernet control X and Y sockets to the appropriate

Ethernet control sockets on the X and Y routers.

•MIDI - connect the three MIDI 5-pin DIN connectors, if required.

•GPIO - connect the 25-way D-type connectors, if required.

•USB - connect a laptop/PC, if required.

•Mains power supply - insert the IEC connector of the mains cable into the rear of

the unit and then plug it into the mains power outlet.

Switching the unit on/off

After you have connected up your DL451 Modular I/O, it is ready to be switched on. To

do this, switch on the mains on/off switch on the rear of the unit.

To switch off the DL451 Modular I/O unit, press the mains on/off switch.

8Chapter 4: Getting Started

DL451 Modular I/O

Operator Manual

Setting up

Initial setting up of the DL451 Modular I/O involves allocating an ID for it within the XL8

network system environment (see “To set up the ID of the unit” on page 14).

Configuration

Configure the DL451 Modular I/O unit to suit your operating requirements (see

Chapter 5 “Programming Mode”).

9

DL451 Modular I/O

Operator Manual

Chapter 5: Programming Mode

This chapter describes the programming mode of the DL451 Modular I/O.

In programming mode the four programming buttons in the control panel are used to

navigate and select options from a number of menus (see “Menus” on page 14), which

let you set up the unit and view information.

Menu navigation

The four programming buttons in the control panel have the following functions.

The menu flowchart (see “Menu flowchart (options 1 to 4)” on page 10 and “Menu

flowchart (option 5)” on page 12) gives an overview of all the menus and their options,

and shows you how to navigate your way around them. In the diagram the menus are

shown on the left, and each subsequent lower level is to the right. Also, non-flashing

options are the ones currently selected.

>> To enter/exit programming mode

To enter programming mode, press the MENU button and hold down for approximately

two seconds; the default display will change to the “Main menu” display for the first

option (see display A on page 10).

To exit programming mode from any menu display screen, press MENU repeatedly

until you reach the default screen. The DL451 Modular I/O will exit programming mode

automatically after about 20 seconds of inactivity, that is, if none of the programming

buttons are pressed within that time.

>> To select a menu

In programming mode, scroll to the menu you want by using the up/down arrow

buttons. Then, press SELECT.

Navigation buttons Usage

Moves up a menu level. Exits programming mode,

depending on the current menu level.

Moves down a menu level or selects the current

option.

Scrolls through the current level of menus/options.

Scrolls through the current level of menus/options in

the opposite direction to the up arrow button.

10 Chapter 5: Programming Mode

DL451 Modular I/O

Operator Manual

Menu flowchart (options 1 to 4)

Default screen

Press and

hold down

for about

two seconds

Menu 3

Menu 4

This menu does not appear if there are no digital I/O

boards fitted. For details of menu 5, see page 12.

No digital I/O

board fitted

Menu 1

Menu 2

A

B

C

Menu 5

Menu flowchart (options 1 to 4) 11

DL451 Modular I/O

Operator Manual

ID range is from

1 to 10.

B

This example shows that

you have selected 7 as

the unit’s ID number

Default display will show new

ID number

ID number

flashes to

indicate it is

available for

selection

12 Chapter 5: Programming Mode

DL451 Modular I/O

Operator Manual

Menu flowchart (option 5)

Select from channels 1-2,

3-4, 5-6 and 7-8

This menu does not

appear if there are no

digital boards fitted

Pressing SELECT has

no effect if there is no

digital board fitted in

selected board

position

C

D

E

Menu flowchart (option 5) 13

DL451 Modular I/O

Operator Manual

Select from OUTPUT and

INPUT SRC settings for

Ch1&2, 3&4, 5&6 and 7&8

Above options show OUTPUT

SRC Ch1&2 selected, as an

example

D option

E

option

14 Chapter 5: Programming Mode

DL451 Modular I/O

Operator Manual

Menus

The five menus in programming mode are as follows:

•1 AES clock — for selecting the method for synchronising the AES50 (see “1 AES

clock menu” below).

•2 Set ID — for setting up the DL451 Modular I/O’s network unit ID (see “2 Set ID

menu” below).

•3 CBMA Version — for viewing the unit’s CBMA version number.

•4 Software Vers. — for viewing the unit’s software version number.

•5 Digital boards — for setting up the digital I/O board(s) of the DL451 Modular I/O

unit, if fitted (see “5 Digital boards menu” on page 15).

1 AES clock menu

This menu lets you set up the clock source of the DL451 Modular I/O, as internal or

external, for AES synchronisation.

>> To set up the unit’s clock source

1In programming mode, select menu 1 (see “To select a

menu” on page 9). The current clock source is shown

on the bottom line of the display, for example,

“Internal clock”.

2Use the down arrow to select the AES clock source you

want, for example, “External clock”. The bottom line

will flash to show that this option is not currently

selected.

3Press SELECT. The bottom line will stop flashing to show that this option has

been selected.

4Press MENU.

2 Set ID menu

This menu lets you set up the network ID of the DL451 Modular I/O, which can be any

number from 1 to 10.

>> To set up the ID of the unit

1In programming mode, select menu 2 (see “To select a

menu” on page 9). The current ID is shown on the

bottom line of the display, for example, “1”.

2Use the down arrow to go to the ID you want, for

example, “7”. The ID will flash to indicate that it is not

currently selected.

If you don’t want to change the ID number, go to the “Unchanged” option, which

is between “10” and “1”.

Menus 15

DL451 Modular I/O

Operator Manual

3Press SELECT.

4Press MENU.

5To exit programming mode, press MENU. The default

display will now show the newly configured ID number

at the end of the bottom line.

5 Digital boards menu

This menu lets you set up the following for any digital I/O board(s) fitted in the unit:

•Clock source — synchronise the digital outputs from the inputs or set them at 48k

or 96k.

•Sample rate converter (SRC) — switch the SRC on/off for each input/output

channel pair. As this option is ‘intelligent’ it may be disabled, depending on the other

settings.

•Word size — set up the word size for the digital outputs as 16, 20 or 24 bits.

This menu has three boards to choose from — A, B and C — representing the module

slot positions printed on the rear panel.

Note: If there are no digital I/O boards fitted, this menu does not appear.

>> To set up the clock source for the digital outputs

1In programming mode, select menu 5 (see “To select a

menu” on page 9).

2Press MENU.

3Use the down arrow button to go to the board you

want to set up. For example, board “C”.

4Press SELECT.

16 Chapter 5: Programming Mode

DL451 Modular I/O

Operator Manual

5At the “Clock Setup(out)” option, press SELECT.

6Use the up/down arrow buttons to go to the desired

pair of output channels. For example, “Channels 7-8”.

7Press SELECT.

8Use the down arrow button to go to the desired option.

For example, “48K”.

9Press SELECT.

10 Use the MENU button to exit.

>> To set up the SRC setting

1In programming mode, select menu 5 (see “To select a

menu” on page 9).

2Press MENU.

3Use the down arrow button to go to the board you

want to set up. For example, board “C”.

4Press SELECT.

5Use the down arrow button to go to the “SRC options”

option.

6Press SELECT.

Menus 17

DL451 Modular I/O

Operator Manual

7Use the down arrow button to go to the desired pair of

input or output channels. For example, “INPUT SRC

Ch3&4”.

8Press SELECT. The bottom line of the display will

show you whether the channel pair is on/off (default is

on).

9If you want to change the setting, press the down

arrow button. Otherwise, take no action and go to the

next step.

10 Press SELECT.

11 Use the MENU button to exit.

>> To set up the word size for the digital outputs

1In programming mode, select menu 5 (see “To select a

menu” on page 9).

2Press MENU.

3Use the down arrow button to go to the board you

want to set up. For example, board “C”.

4Press SELECT.

5Use the down arrow button to go to the “Word Size

(out)” option.

6Press SELECT.

7Use the down arrow button to go to the desired pair of

output channels. For example, “Channels 7-8”.

8Press SELECT. The bottom line of the display will

show the currently selected bit size.

18 Chapter 5: Programming Mode

DL451 Modular I/O

Operator Manual

9Use the down arrow button to go to the desired bit

size. For example, “20 bits”.

10 Press SELECT.

11 Use the MENU button to exit.

19

DL451 Modular I/O

Operator Manual

Chapter 6: Operation

This chapter explains the default display, describes how to replace a module and

provides routine service information. There are no operating procedures associated

with the DL451 Modular I/O, as it is operated solely from the XL8 Control Centre. For

more information, see the XL8 Live Performance SystemOwner’s Manual (part number

DOC02-XL8).

Default display

The default display appears after the unit has been switched on and has powered up.

The following diagram shows a typical default display.

Item Description

1The first line of text displays the manufacturer and model number of the

unit.

2Unit ID number.

3Description of unit.

1

2

3

20 Chapter 6: Operation

DL451 Modular I/O

Operator Manual

21

DL451 Modular I/O

Operator Manual

Appendix A: Functional Block

Diagrams

This appendix contains a functional block diagram for each module.

Analogue input module (DL441)

Line/mic board details.

22 Appendix A: Functional Block Diagrams

DL451 Modular I/O

Operator Manual

Analogue output module (DL442)

Line out board details.

ADDRESS

DATA

SYSTEM

WORD CLOCK

LOCAL

PLL

D/A

Lo Pass

Filter

DIGITAL

IN

REMOTE

CONTROL

INTERFACE

MUTE

STATUS

LED

LINE

OUT

1 OF 8 CHANNEL PATHS

DIGITAL BACKPLANE SIGNALS

REMOTE

INTERROGATE

LED

+

-

Analogue Jack I/O module (DL443) 23

DL451 Modular I/O

Operator Manual

Analogue Jack I/O module (DL443)

24 Appendix A: Functional Block Diagrams

DL451 Modular I/O

Operator Manual

AES/EBU digital I/O module (DL452)

Clock

Control

CPLD

AUDIO

SYSTEMS

CLOCKS

SYSTEM

WORD CLOCK

LOCAL

PLL

12S

REMOTE

INTERROGATE

LED

1 OF 4 CHANNELS

DIGITAL BACKPLANE SIGNALS

SYNC

STATUS

LED

Digital Audio Out

12S

Digital Audio In

ADDRESS

DATA

SYSTEM

CONTROL

FPGA

Digital Audio

Transmitter

12S Digital Audio

SRC

CLOCKS

AES/EBU

OUT

Input

Clocks

Digital Audio

Receiver

12S Digital Audio

SRC

CLOCKS

AES/EBU

IN

Output

Clocks

REMOTE

INTERROGATE

LED

MUTE

STATUS

LED

Output Clocks

Input Clocks

25

DL451 Modular I/O

Operator Manual

Appendix B: Technical Specification

This appendix contains the technical specifications specific to the DL451 Modular I/O.

For system related XL8 Control Centre specifications and for full technical specifications

for the XL8 Live Performance System, refer to its Owner’s Manual (part number

DOC02-XL8).

Due to a policy of continual improvement, Midas reserves the right to alter the function

or specification at any time without notice.

General specifications

Inputs and outputs

Analogue inputs

Analogue outputs

Digital inputs

Dimensions 3U x 410 mm deep

Net weight 12.6 kg

Power requirements 100V to 240V, 50 to 60Hz

Operating temperature range +5°C to +40°C

Storage temperature range -20°C to +60°C

Connector 3-pin XLR balanced

A/D converter 24-bit, 96k and 128 times over sampling

Connector 3-pin XLR balanced

D/A converter 24-bit, 96k and 128 times over sampling

Connector AES3 (two channels of digital audio) on 3-pin

XLR

Sample rates Accepts any frequency between 32k to 96k

Bypass Sample rate converter can be bypassed

26 Appendix B: Technical Specification

DL451 Modular I/O

Operator Manual

Digital outputs

MIDI and GPIO

Digital system inputs and outputs

Connector AES3 (two channels of digital audio) on 3-pin

XLR

Sample rates 48k, 96k or auto tracking to inputs

Bypass Sample rate converter can be bypassed

Word length 16-, 20- or 24-bit

MIDI connector In, out and through on 5-pin DIN

GPIO IN connector 25-pin D-type (opto isolated)

GPIO OUT connector 25-pin D-type (opto isolated)

System connector AES50 (24 channels of bi-directional digital

audio) on Ethercon XLR

Duplicate connector AES50 (24 channels of bi-directional digital

audio) on Ethercon XLR providing dual

redundant back up of channels

27

DL451 Modular I/O

Operator Manual

Appendix C: I/O Modules

This appendix provides instructions on replacing a module on the rear panel of the

DL451 Modular I/O.

The DL451 Modular I/O has three module slots into which any combination of the

following modules can be fitted:

• DL441 analogue input module (see “DL441 analogue input module” on page 28).

• DL442 analogue output module (see “DL442 analogue output module” on page 29).

• DL443 analogue insert input/output module (see “DL443 analogue Jack I/O module”

on page 30).

• DL452 digital in/out (AES/EBU) module (see “DL452 digital I/O module” on

page 31).

Details of how to replace a module can be found in Appendix D "Replacing An I/O

Module" on page 33.

28 Appendix C: I/O Modules

DL451 Modular I/O

Operator Manual

DL441 analogue input module

The DL441 analogue input module provides eight balanced line (or mic) inputs. Its rear

panel houses eight input XLRs, each having check and 48V LEDs.

The line inputs may be used as simple unity gain inputs to the XL8, such as insert

returns. However, there is also provision for gain adjustment in 5dB steps from -5dB to

+40dB. This allows very high signal levels to enter the system and means that the

same hardware can be used for mic inputs, if required by the system.

When used for microphones the input can also provide 48-volt phantom power.

Item Description

1Eight XLR analogue mic/line inputs.

2Green check LED illuminates to indicate when a channel is selected on a

console. These are controlled by the console and used as a visual aid to

locate specific connectors.

3Red 48V LED illuminates to indicate 48V phantom voltage is on.

1

2

3

DL442 analogue output module 29

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Operator Manual

DL442 analogue output module

The DL442 analogue output module provides eight balanced line outputs. Its rear panel

houses eight output XLRs, each having check and mute LEDs.

The line outputs have no analogue level adjustment.

Item Description

1Eight XLR analogue outputs.

2Green check LED illuminates to indicate when a channel is selected on a

console. These are controlled by the console and used as a visual aid to

locate specific connectors.

3Red Mute LED illuminates to indicate that channel is muted.

1

2

3

30 Appendix C: I/O Modules

DL451 Modular I/O

Operator Manual

DL443 analogue Jack I/O module

The DL443 Jack I/O module provides a reliable, robust, high quality option where

maximum connectivity is required at reduced cost. It has normalising and low latency,

and is of robust construction.

The DL443 Jack I/O module has a total of 16 ¼” Jack sockets providing eight outputs

(sends) and eight inputs (returns). Each output has a red mute status LED.

Item Description

1Eight jack sockets per inputs (returns) section and eight jack sockets

per outputs (sends) section.

2Red mute LED on each outputs (sends) jack socket illuminates to

show when a channel is muted on the console.

1

1

2

DL452 digital I/O module 31

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Operator Manual

DL452 digital I/O module

The DL452 digital I/O module provides four (stereo) AES/EBU inputs and outputs. Its

rear panel houses these I/Os in four pairs. Each input has a check and a sync LED and

each output has a check and a mute LED.

Each AES/EBU input can run at sample rates up to 96kHz (44.1Hz, 48kHz, 88.2kHz and

96kHz) using a sample rate converter (SRC). If the digital input is synchronous with

the system clocks, the SRC can be bypassed to remove approximately 1ms of delay,

which is inherent in the sample rate conversion process.

Each AES/EBU output can also run at sample rates up to 96kHz by using an (SRC).

There are two potential clock sources for the digital outputs: the system and the

coinciding digital input. When using the system to drive the digital outputs, the output

SRC is bypassed and the sample rate of the output is matched to the system. When the

digital input clocks are used to drive the digital outputs, the SRC is enabled and the

audio output is converted from the sample rate of the system to the sample rate of the

digital input.

Item Description

1Four pairs of digital AES3 (AES/EBU) XLR inputs and outputs.

2Green check LED illuminates to indicate when a channel is selected on a

console. These are controlled by the console and used as a visual aid to

locate specific connectors.

3Red sync LED illuminates to indicate that a valid AES3 connection is

present on the digital input.

4Red Mute LED illuminates to indicate channel is muted.

1

2

3

2

4

32 Appendix C: I/O Modules

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33

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Appendix D: Replacing An I/O Module

This appendix provides instructions on replacing an module on the rear panel of the

DL451 Modular I/O.

Replacing a module

The design of the DL451 Modular I/O makes module replacement very easy and

straightforward. The unit has rack guides in each of the three module positions so that

the modules can slide easily in and out. Each module is held in place by two screws, at

the left and right sides. A short metal post (or stud) adjacent to each screw facilitates

removal.

>> To remove a module

1Switch off the unit and isolate it electrically from the mains power supply by

switching off the mains power supply at the mains outlet and removing the mains

power cable from the rear of the unit.

2Unplug all cables from the rear of the unit.

3On the module you are replacing, remove the two securing screws from its left

and right sides on the rear panel (circled below).

4Pull out the module using the two circular machined posts (fitted to rear of

module panel, adjacent to the two securing screws).

>> To fit a module

Carefully insert the module into the empty module slot, ensuring the correct

orientation, and secure the module in place using the two securing screws (left and

right). Then, plug in all the cables to the rear panel of the unit. Finally, plug in the

mains cable and switch the unit on.

34 Appendix D: Replacing An I/O Module

DL451 Modular I/O

Operator Manual

The unit will recognise the type and position of the new module just fitted. However,

you may need to configure some of its options (see Chapter 5 “Programming Mode”).

35

DL451 Modular I/O

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Appendix E: Service Information

This appendix gives you servicing information for your unit.

If you are in any doubt or have queries about any of the procedures in this appendix,

contact Midas Technical Support. Contact details can be found at the front of this

manual.

Routine maintenance

To help keep your unit in good working order and to make sure it gives you optimum

performance, we recommend that you carry out the following:

Monthly

• Clean the unit, as detailed in “Cleaning” below.

• Check all controls, such as pushbuttons, for freedom of operation.

• Check the functionality of all controls and indicators, such as LEDs.

• Check the functionality of the equipment.

Yearly

• Clean the internal fans, see “Cleaning the internal fans” below.

Cleaning

Switch off the unit and electrically isolate it from the mains before cleaning.

Clean the unit using a dry, lint-free cloth. Don’t use harsh abrasives or solvents. When

cleaning the unit, take great care not to damage the controls or LCD screen.

Cleaning the LCD screen

Carefully wipe the surface of the LCD screen with a soft, lint-free cloth using ethanolic

liquid, such as a screen cleaner for LCDs, or by using a screen wipe specially designed

for the purpose. When cleaning the LCD screen, please take the following precautions:

• Don’t use harsh abrasives, such as paper towels.

• Don’t apply liquids directly to the screen.

• Don’t use ammonia-based cleaners and solvents, such as acetone.

Cleaning the internal fans

The unit’s internal fans need to cleaned regularly to remove the build of dust, dirt etc.

We recommend that they are cleaned at least once a year, provided the unit has been

operated under normal conditions. However, if the operating conditions are more

adverse or extreme, for example, if the unit is operated in the vicinity of smoke

machines, new carpets etc., this frequency should be increased accordingly.

This procedure must be carried out by a fully qualified service engineer.

36 Appendix E: Service Information

DL451 Modular I/O

Operator Manual

Equipment disposal

When this equipment has come to the end of it useful life, its disposal may come under

the DIRECTIVE 2002/96/EC OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of

27 January 2003 on waste electrical and electronic equipment (WEEE).

Hazardous substances in WEEE contaminate water, soil and air and ultimately put at

risk our environment and health. The directive aims to minimize the impacts of WEEE

on the environment during their life times and when they become waste.

The WEEE directive addresses the disposal of products when they have reached the end

of their life and contributes to the reduction of wasteful consumption of natural

resources. This will help to reduce pollution, and protect the environment and

ourselves.

If this equipment carries a ‘crossed-out wheelie bin’ (shown left), please

do not dispose of WEEE as unsorted municipal waste but collect and

dispose of in accordance with local WEEE legislation. The horizontal bar

underneath indicates that the product was placed on the EU market after

13th August 2005.

For WEEE disposal, see our website at www.midasconsoles.com for

information.

37

DL451 Modular I/O

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Appendix F: XL8 Live Performance

System

The XL8 Live Performance System is a very powerful and flexible audio processing

system that provides a complete solution for any audio mixing and signal distribution

application in a live sound environment.

The standard XL8 system offers 96 channel inputs, 51 outputs, 51 buses

(32 auxes/groups, 16 matrices and three masters), 16 on-board effects processors,

PEQs (four-band on inputs and six-band on outputs), up to 48 assignable GEQs (if all

stereo effects units are being used), 16 configurable stereo effects (from eight options),

surround panning (5.1, LCRS and quad) and comprehensive, easy-to-use routing. XL8

automation provides up to 1,000 scenes with snapshot save/recall capability and global

edit, presets and show file archiving.

The XL8 Control Centre forms the core of the XL8 Live Performance System, which also

includes a number of 19” rack modules that are interconnected by a networked data

system. The network carries both proprietary control data and open architecture

AES50 digital audio, and uses readily available standard cabling and connectors. The

XL8 uses the proven stable Linux operating system. Third party hardware and software

(and plug-ins) can be easily integrated into the system.

Included with the XL8 Control Centre are four mic splitters, five I/O units, 10 DSP units,

two routers and a Klark Teknik DN9331 RAPIDE that, collectively, form the standard

XL8 Live Performance System configuration.

The XL8 Live Performance System is tolerant of any single failure of hardware or

software. To achieve this the system employs dual redundancy, where a key

component has an identical redundant spare that is ready to take over should it fail.

Other failure scenarios are managed by the N+1 principle, where redundant

components form an acceptable fraction of the system, for example, one of the DSP

units in the rack is a redundant spare.

Features

Please remember, the XL8 is not just a console, it’s a LIVE PERFORMANCE SYSTEM!

Concert sound

The standard XL8 system, which provides the full 96 inputs and 51 outputs, comprises:

• 1-off XL8-5BCC (flight-cased, five-bay control centre).

• 4-off XL8 stage box (DL431).

• 5-off XL8 I/O box (DL451).

• 10-off XL8 DSP units (DL471).

• 2-off XL8 router units (DL461).

• All interconnecting cables (Cat 5e and Cat 6).

Install

The XL8 is flexible and the system can be customised with the needs of the install.

38 Appendix F: XL8 Live Performance System

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Operator Manual

Configuration

• All outputs have six-band parametric EQ and five-mode compressor styles.

• Up to 16 stereo FX units.

• Up to 48 assignable GEQs (16 if all 16 stereo FX units are being used).

• Control from RAPIDE.

Showfiles

• USB connectors for show archiving.

• Showfiles are both forward and backward compatible.

Warranty

Three years.

Audio quality

• Three mic pre amps per input FOH, monitor and broadcast.

• Midas EQ (sound quality and ‘feel’).

• Four filters.

• Midas dynamics.

• Four styles (five on outputs).

• Midas quality input and output.

• Midas and Klark Teknik FX processing.

User interface - speed and feel

• VCA groups.

• Console comes to you!

• POP groups.

• Console comes to you!

• Muscle memory.

• E-zone on channel strip.

• D-zone on channel strip.

• Paged controls do not change function.

•Fast zone.

• Electronic colour coding.

• Dedicated motorised output faders.

• Klark Teknik RAPIDE.

Features 39

DL451 Modular I/O

Operator Manual

User interface - status visibility

• Daylight-visible screens.

• Metering.

• 63 discrete 20-segment LED meters.

• Discrete metering for dynamics and direct outputs.

• “All the meters all of the time”.

• “ST” assign switch.

• Eight channels of key data plus single channel strip per input screen.

Dual operators - perfect for festival situations

• Modular control centre with multiple input areas.

• Area A and Area B assignment.

• Discrete dual solo systems.

Automation - developed in conjunction with Broadway sound

designers and engineers

• Cross-scene global edit capability.

• Showfiles on earlier and later versions of firmware.

System design and network - ground-breaking

• Integrated analogue mic splits with local control and monitoring.

• Integrated open-architecture AES50 digital audio distribution.

• Fully duplicated network for redundancy.

• Up to 100 metres of dual redundant connectivity between hardware elements

(copper); up to 500 metres using optical fibre.

• Automatic integral delay management system - audio outputs time and phase

coherent.

• Flexible, expandible hardware system.

• Ethernet TCP-IP and USB tunnelling for third parties.

• KVM (keyboard, video and mouse) switching on control centre.

Reliability

• Failure-tolerant of any single failure of hardware or software.

• Proven, stable Linux operating system.

• Duplicated master controllers.

• Control centre has five multiple-redundant power supplies.

• Stage box has integral dual power supplies.

Service and support

• 24/7 global telephone support.

• Service/support centres in US, UK and Singapore.

40 Appendix F: XL8 Live Performance System

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Operator Manual

System components (standard supply)

The standard XL8 Live Performance System comprises the following equipment:

•XL8 Control Centre (1-off):

Comprises five discrete, independent

bays, each with its own power supply,

surface modules, surface processor, GUI

processor and GUI screen. The standard

five-bay control centre has three bay

types, input (3-off), mix (1-off) and

output (1-off).

•DL431 Mic Splitter (4-off): 6U 19” rack unit that

provides 24 mic/line inputs.

•DL451 Modular I/O (5-off): 3U 19” rack unit that

provides a maximum of 24 audio inputs and 24 audio

outputs.

•DL471 DSP (10-off): 1U 19” rack unit that forms part

of the modular DSP engine.

•DL461 Router (2-off): 3U 19” rack unit that provides

the on-stage Cat 5e interconnectivity and the stage-to-

FOH link via a single ‘snake’, which can be copper cable

or a fibre optic link.

•Klark Teknik DN9331 RAPIDE (1-off): 6U 19” rack

unit that is a motorised fader remote control for the

onboard graphic EQs of the XL8.

•Snakes and main cables etc.

To provide a complete audio system, the only other equipment required are mics,

amplifiers and loudspeakers.

System interconnections 41

DL451 Modular I/O

Operator Manual

System interconnections

Figure 1 shows basic system interconnectivity and indicates where the XL8 Control

Centre (highlighted in red) sits within the system. This figure also illustrates

redundancy by showing that the two halves of the system - left and right - are identical

(ignoring the DN9331 RAPIDE).

The XL8 Control Centre, which forms the core of the XL8 Live Performance System, is

directly connected to the local I/O units, DN9331 RAPIDE and routers (via the ‘snake’).

Each router acts as a hub and is connected to the mic splitters I/O units and DSPs,

which are common to both halves of system. The network carries both proprietary

control data and open architecture AES50 digital audio, and uses readily available

standard Cat 5e, Cat6/fibre optic cabling and connectors.

Figure 1: Basic interconnectivity of a standard XL8 Live Performance System

Cat5 cabling

Cat6/optical

‘snake’

Local I/O units

DSP units

Mic splitters

I/O units

Router

Router

XL8 Control

Centre

DN9331 RAPIDE

Clock sync

42 Appendix F: XL8 Live Performance System

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Operator Manual

FOH and MON

The XL8 Live Performance System can be used as a front of house (FOH) or stage

monitor (MON) system. Also, by sharing the four mic splitters, these two types of

system can be used in tandem, as shown in Figure 2 on page 42.

Figure 4 on page 49 shows in more detail the interconnections between each unit in a

typical XL8 Live Performance System FOH and MON set up. In particular, it shows the

how the FOH and MON sections are connected up; notice that the mic splitters are

shared between them.

Figure 2: Typical XL8 Live Performance System FOH and MON set-up

Multiple MidasNET links

XL8 Control Centre

Routers

FOH

FOH (on stage)

Stage

Monitor

Mic splitters (shared)

Local I/O units

XL8 Control Centre

DSP units

I/O units (outs)

Key

24-channel bi-directional

MidasNET

Main

Duplicate

Main

Duplicate

192-channel bi-directional

MidasNET trunk link

Main

Duplicate

Routers

DSP units

I/O units (outs)

Mix matrix 43

DL451 Modular I/O

Operator Manual

Mix matrix

Ultimately, the mix matrix defines the XL8 Control Centre’s capability. Probably the

best way to imagine the mix matrix is to think of an analogue console layout, where

inputs run vertically and buses run horizontally. A mix matrix is usually defined as the

number of buses and the quantity of simultaneously-mixable inputs there are per bus.

The following diagram illustrates the capability within the control centre.

Processing

Although the control centre system allows for considerable insertion of external

processing it also embodies more than enough internal high quality processing to

eliminate the need for this.

Input channel processing

Each of the 96 full-function input channels has:

• Analogue and digital gain.

• Phase reverse switch.

• Input delay.

• Swept high pass filter with choice of two filter slopes.

• Swept low pass filter with choice of two filter slopes.

• Frequency-conscious compressor with choice of four compression styles.

• Frequency-conscious noise gate with external side chain.

• Insert point.

• Treble EQ filter with choice of four filter types.

• Parametric hi-mid EQ filter.

• Parametric lo-mid EQ filter.

• Bass EQ filter with choice of four filter types.

• Routing via level controls to 48 mix buses.

• Routing via pan control to left and right master buses.

• Routing to mono master bus.

•Panpot (SIS™).

• Direct output.

Bus inputs

Bus outputs

32 aux/group

buses

96 mic/line inputs

Stereo and

mono buses

16 mic/line return inputs

16 matrix

(main buses)

96 in x 32 out

mix matrix

144 in x 3 out

mix matrix

147 in x 16 out

mix matrix

{}

{}

{}

44 Appendix F: XL8 Live Performance System

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Operator Manual

Each of the 16 auxiliary inputs has:

• Input gain.

• Source from internal FX or external pool input.

•Fader.

•Panpot (SIS™).

• Routing via level controls to the 16 matrix buses.

• Routing via pan control to the left, right and mono master buses.

Mix channel processing

Each of the 32 auxiliary mix buses has:

• Subgroup, auxiliary or mix minus modes.

• Dual mono or stereo pair modes.

• Six-band PEQ.

• Optional 31-band GEQ (replaces PEQ).

• Frequency-conscious compressor with soft clip limiter and choice of five compression

styles.

• Insert point.

• Routing via level controls to the 16 matrix buses.

• Routing via pan control to the left, right and mono master buses.

• Direct input.

Each of the 16 matrix buses has:

• Six-band PEQ.

• Optional 31-band GEQ (replaces PEQ).

• Five-mode frequency-conscious compressor with soft clip limiter and external side

chain.

• Insert point.

• Direct input.

Output channel processing

Each of the 16 matrix buses has:

• Six-band PEQ.

• Optional 31-band GEQ (replaces PEQ).

• Five-mode frequency-conscious compressor with soft clip limiter and external side

chain.

• Insert point.

• Direct input.

Each of the three master output buses has:

• Six-band PEQ.

• Optional 31-band GEQ (replaces PEQ).

• Five-mode frequency-conscious compressor with soft clip limiter and external side

chain.

• Insert point.

• Direct input.

Audio physical connections 45

DL451 Modular I/O

Operator Manual

Effects processing and GEQs

The XL8 contains 16 mono Klark Teknik (KT) GEQs and 16 effects processors as

standard.

The 16 effects processors can be freely chosen from:

•Delay.

• KT DN780 reverb.

•Flanger.

•Phaser.

•Stereo Graphic EQ.

• Pitch shifter.

• Square ONE Dynamics.

• 3-band compressor.

The 16 mono KT GEQs can be patched into any output. There are many patching

options for the effects processors:

• Assign to any insert send/return.

• Assign to any pool, in or out.

• Assign FX out to aux return.

• Assign FX in to aux send (post-fade).

• Assign FX out to bus direct in.

• Assign FX in to channel direct out.

Every XL8 comes supplied with a KT DN9331 RAPIDE motorised fader GEQ controller.

This unit provides rapid adjustments of the graphics with real hardware, and not a

mouse and screen. The graphic channel is selected either by the control centre’s SOLO

button (solo tracking system (STS)) or by buttons on the RAPIDE itself.

Audio physical connections

The total number of audio connections, that is, the XLR count, for a standard XL8 Live

Performance System is 504. This comprises of both dedicated and configurable XLR

connections.

The dedicated XLR connections are on the DL431 mic splitter and comprise:

• 96-off mic/line inputs.

• 2 x 96-off analogue mic splits with variable gain.

• 96-off transformer isolated analogue ‘broadcast’ mic splits (fixed gain).

All of the configurable connections are on the five DL451 I/O units, which can be freely

located at the FOH or on stage. Three banks of sockets (eight XLRs each) are available

for:

• 8-off analogue mic/line inputs.

• 8-off analogue outputs.

• 8-off AES/EBU XLRs providing eight digital inputs and eight digital outputs per

module.

46 Appendix F: XL8 Live Performance System

DL451 Modular I/O

Operator Manual

Uses of the configurable audio connections

The standard XL8 Live Performance System has a total configurable audio channel

count (on the DL451 I/O units) of between 120 and 240, depending on the mix of

analogue and digital I/O (excluding the non-configurable 96 mic inputs on the DL431

mic splitter).

Typically, the allocation would be:

• 16-off mic/line auxiliary inputs (giving a total of 112 mic inputs as standard).

• 32-off aux/group bus outputs.

• 16-off matrix (main) outputs.

• 1-off stereo main output.

• 1-off mono main output.

• 2-off stereo local monitor outputs.

This gives a total of 71 audio connections, leaving a further 169 (with everything

digital) or 49 (with everything analogue) audio connections. These can be used for

insert sends, insert returns, direct outputs, bus direct inputs and side chain

connections.

Figure 3: XL8 maximum system capacity (112 mic inputs)

5-off DSP

units

Mic splitters I/O units

XL8 Control Centre

Cat6/optical

‘snake’

2-off routers

5-off DSP

units

192

configurable

I/Os at mix

position

Cat 5e cabling

I/O units

I/O units

I/O unitsI/O units

2 x 24 analogue

outputs to

speaker system

2 x 24 analogue

outputs

(remote areas)

48-track

hard disk

recorder

12 x AES/EBU

Surround capabilities 47

DL451 Modular I/O

Operator Manual

The maximum count of any one type of connection is:

• 96-off input insert sends.

• 96-off input insert returns.

• 96-off input compressor external side chain connections.

• 96-off input noise gate external side chain connections.

• 96-off input direct outputs.

• 51-off mix bus insert sends.

• 51-off mix bus insert returns.

• 51-off mix bus direct inputs.

• 1-off talk mic input.

However, the XL8 can have much more than the standard connectivity by adding

DL451 I/O units. As there are nine AES50 connections1 (fully redundant) available,

potentially, another 432 audio connections can be achieved (subject to other system

limits). This gives a maximum XLR count of 720. Figure 3 shows a system

configuration containing the extra nine DL451 I/O units, but does not show the

redundant duplicated network.

All connectivity is controlled via the GUI.

Surround capabilities

Theatres and broadcast have differing requirements for surround, and both are catered

for in the XL8.

Conventional stereo and SIS™ panning is assignable on a channel by channel basis

(channel one can be in stereo while channel two can be in SIS™), as follows:

• Stereo left–right routing to master buses.

• SIS™ left–right–centre routing to master buses.

Three additional surround modes operate as follows:

• Quad (left, right, LS and RS).

• Surround (left, right, centre, surround).

• 5.1 surround (left, right, centre, subwoofer, LS and RS).

Network

The XL8’s digital audio network utilises the physical connectivity of Ethernet

(EtherCon® connectors and Cat 5e/Cat6 cable), but replaces its data protocol with

AES50 protocol (implemented as SuperMAC) and the HyperMAC high capacity system,

which are more suited to high quality, low latency audio distribution. The use of the

AES standard allows straightforward interfacing with any third party hardware that also

utilises this connection.

AES50 and HyperMAC connections carry digital audio, control data and standard

Ethernet traffic bi-directionally down a single cable. Cat 5e cable is used for the ‘local’

(24-channel) connections and the single digital ‘snake’2 — between control centre and

router — is either Cat 5e/Cat6 or fibre optic. The combination of audio, control, clock

and third party Ethernet data in a single network means that the hardware interfaces on

a single RJ45 connection.

1. These spare AES50 ports can also be used to directly connect any AES50 equipped units, such as a

hard disk recorder.

2. The digital snake is equivalent to a 384-channel analogue multi-core cable (192 channels in each

direction).

48 Appendix F: XL8 Live Performance System

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Operator Manual

All system connections are duplicated for full dual redundancy.

Resilience to failure (redundancy)

The XL8 Live Performance System is tolerant of any single failure of hardware or

software. To achieve this the system employs dual-redundancy, where a key

component has an identical redundant spare that is ready to take over should it fail.

Other failure scenarios are managed by the N+1 principle, where redundant

components form an acceptable fraction of the system; for example, one of the DSP

units in the rack is a redundant spare (see Figure 4 on page 49).

The control surface can tolerate multiple hardware failures without the operator losing

control of the audio. Any of the five GUI screens can be used to operate the whole

control centre, even if no control surface hardware is working.

The system includes diagnostic tools that give advance warning of any poor connectivity

(high error rates), internal temperatures and voltages etc. The system instantly alerts

the operator in the event of any hardware, software or connection failures, and

indicates the location of the fault. The system asks the operator what action to take,

but doesn’t automatically reconfigure. This is so that if, for example, the band is near

the end of a song and the audio is still alright, the mix engineer carry out corrective

action at a more opportune time.

Figure 5 on page 50 shows that even when all of one half of the system is down (the

greyed out portion) it will still function as normal. Although, in practise, it is highly

unlikely that this will ever happen.

Figure 6 on page 51 illustrates what happens when a router fails. Once again, the

system functions perfectly normally.

Resilience to failure (redundancy) 49

DL451 Modular I/O

Operator Manual

Control and

audio data

Audio data

Control data

Router

Monitor

FOH

XL8 Control Centre

Internal bay

processor

Dual redundant

internal router

Dual redundant

internal master

controller

Local I/O units

Mic

splitters

(shared)

This diagram gives a

more detailed

illustration of the

interconnections in a

standard FOH and

stage monitor set up.

N + 1 redundant

spare

N + 1 redundant

spare DSP unit

DSP

units

Figure 4: System interconnections

Cat6/optical

‘snake’

I/O units

Clock sync

XY

50 Appendix F: XL8 Live Performance System

DL451 Modular I/O

Operator Manual

I/O units

Router

Monitor

FOH

XL8 Control Centre

Internal bay

processor

Internal router

Internal master

controller

Local I/O units

Mic

splitters

(shared)

DSP

units

This diagram

illustrates an extreme

example of dual

redundancy in a

standard FOH and

stage monitor set up,

where one half of the

system is down.

Please note this is a

highly unlikely

scenario.

Figure 5: System showing 50%

redundancy

Key

Not active

OK

XY

Resilience to failure (redundancy) 51

DL451 Modular I/O

Operator Manual

Router

(faulty)

Router

(healthy)

DSP

units

I/O units

Monitor

FOH

XL8 Control Centre

Internal bay

processor

Internal router

Internal master

controller

Local I/O units

Mic

splitters

(shared)

This diagram

illustrates the effects

of a single router

failure in an FOH and

stage monitor set up.

Figure 6: System with a redundant

router

Key

Not active

OK

XY

52 Appendix F: XL8 Live Performance System

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Operator Manual

Control software

The XL8’s operating system is Linux, which is an open-source, stable, proven operating

system (OS). Linux is used in many mission-critical applications worldwide and has

allowed Midas’ software engineers to write a ground-up system that contains no

‘hidden’ or unused code. This has resulted in an efficient, compact application, which is

quick in operation, quick booting and comparatively easy to debug.

Two copies of the master control software run on separate processors to provide

resilience to failure.

GUI

The XL8 has five, daylight-viewable, TFT screens that provide overview and detail

status indication. Any screen can display any information but, in the standard

configuration, screen information relates to module location. So, the input module

screens display their module’s input status, the mix module screen displays the

overview status screen (‘all the meters all the time’) and the output module screen

display is used for general use, such as automation, effects, GEQs, third party screens

etc. This is dependent on the current application (concerts will probably be different to

theatre) and also operator preference.

The screens are controlled via the navigation zones at the front of the modules. In the

output module’s primary navigation zone, two trackballs control the output module

(right trackball) and the mix module (left trackball). The equivalent on each input

module is a dedicated glidepad. A keyboard slides out from underneath the output

module to provide further control, such inserting text. USB keyboard input sockets at

the front of the control centre (under the left and right modules) allow the input and

mix screens to be controlled via an external keyboard should the output module screen

fail.

Console linking

Two XL8 Control Centres can be linked together, as you can with Heritage consoles.

The bus outputs from one control centre feeds the bus inputs of the other, which is

done using AES50 links.

Integration of third party software

The XL8 network includes the capability to interface any third party hardware that uses

AES/EBU or AES50 digital audio, or a standard analogue audio interface.

Each XL8 AES/EBU input and output has a sample rate converter. Synchronisation to

external AES3 interfaces can be:

• Global - via inputs on the routers.

• Local to each input.

• Local to each output (synchronisation to adjacent local output).

Multiple local connections can be at different sample rates.

The use of the AES50 protocol for the transmission of digital audio means that any third

party digital audio hardware that features this connection can be connected to the

Midas network, and will transfer audio to and from the Midas hardware without any

additional interfaces or converters (provided it runs in TDM 96kHz mode). This will be

particularly useful as the protocol gains acceptance with recording and playback

devices, loudspeaker controllers, audio networking systems, digital amplifiers etc.

PC or MAC computers can use the Ethernet tunnel in the MidasNET system, and can

communicate with other computers on the network.

Integration of third party software 53

DL451 Modular I/O

Operator Manual

The XL8 Control Centre features a four-way KVM switch on the output module screen,

as well as external video IN and OUT for each of the five screens. Control centre views

can be routed to external monitors, and external video sources can be displayed on the

control centre’s screens.

The KVM switch facilitates the control of three external computers from the screen,

trackball and keyboard of the control centre. This is hugely important and means that

third party systems can be controlled from within the XL8 without having to move your

head to look at screens placed off to one side. It also means that there is no need to

find somewhere to put multiple keyboards and mice. Examples are:

• ProTools. Right in the middle of the XL8! Link ProTools and XL8 audio digitally and

use any ProTools plug-in as an insert to the XL8!

• Netmax (AES/EBU audio link initially and Cobranet when the 48kHz I/O module is

available on XL8).

• IRIS (for example, for RL amps).

• KT Elgar (via Ethernet tunnel from FOH to stage).

• Wireless mic controllers.

•Your email.

•DVD movies.

54 Appendix F: XL8 Live Performance System

DL451 Modular I/O

Operator Manual

55

DL451 Modular I/O

Operator Manual

Appendix G: Setting Up An XL8 System

This chapter shows you how to set up an XL8 Live Performance System to its default

configuration.

Note: If you want to set up the XL8 Live Performance System using a configuration

other than the default, please contact Midas Technical Support for details.

Initial set-up procedure

Initial system set-up basically comprises:

•Unpacking and checking the equipment — see “Unpacking the equipment”

below.

•Making up the racks — see “Making up the racks” below.

•Connecting up the equipment — see “Wiring instructions” on page 57 and “XL8

system interconnections” on page 60.

•Powering the equipment — see “Powering the XL8 system” on page 63.

•Initial patching:

•Configure the type of snake — see “Configuring the XL8 with the snake type”

on page 30. It is important to configure the XL8 with the correct type of

snake connected in the system.

•Setting up the I/O rack devices — see “Configuring the devices” on page 29.

•Configuring the DL4n1 units — see “Setting up the ID of the DL4n1 units” on

page 65.

Unpacking the equipment

After carefully unpacking the equipment, check it against the packing list shown in

“System components (standard supply)” on page 40.

Save all packing materials, as they will prove useful if you need to transport the

equipment later.

Inspect the equipment carefully for any sign of damage incurred during transportation.

It has undergone stringent quality control inspection and tests prior to packing and was

in perfect condition when it left the factory. However, if the equipment shows any signs

of damage, notify the transportation company without delay. Only you, the consignee,

may institute a claim against the carrier for damage during transportation.

Making up the racks

After you have unpacked the XL8 Live Performance System and made sure everything

is there, make up the racks. In the default set up there are three stage rack units and

one FOH rack unit, which should be set up as shown in “XL8 system interconnections”

on page 60.

Although rack unit set-up is fairly straightforward, there are careful considerations to be

addressed beforehand, which are outlined in the following subsections.

56 Appendix G: Setting Up An XL8 System

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Operator Manual

Outboard equipment racks

To ensure the correct installation and function of the outboard equipment, such as the

DL4n1 units and DN9696 recorder, the racks must meet the following general

requirements.

•Shock mounting (for non-installation environments): The racks must provide

adequate shock protection of the units they house by incorporating appropriately-

designed shock protection methods, for example, a foam-suspended rack or a frame

suspended on anti-vibration mounts etc.

•Ventilation: The XL8 rack units have been designed such that their internal

ventilation airflow is drawn in through the front of the unit and expelled though the

rear. To facilitate this, rack design must ensure that cool air can flow freely through

the rack in the same direction, that is, in through the front of the rack and out

through the rear. Situations where the air flows in a circular direction around and

through an XL8 unit must be prevented. Midas recommends that racks with fully

opening front and rear doors are used.

Note: Never combine units in the same rack that have been designed for a

ventilation air flow direction other than that for the XL8 units. To avoid this, we

recommend that any non-XL8 units are housed separately.

•Rack mount supports: Always secure the rear of the XL8 units to the rack via their

rear rack mount support brackets. These brackets are fitted to every XL8 unit and

are recommended for use in touring applications. The rack mount support fixing

hole centres are at a depth of approximately 395 mm from the front panel (this

dimension may differ slightly on the DN9696).

•Handles on rack case: You must ensure that there are sufficient external handles

fitted to the rack casing to enable the rack to be manoeuvred easily and safely, and

by the amount of personnel suitable for the task. Also, these handles must be fit for

purpose.

•DSP rack only: Midas strongly recommends that the DSPs and routers are housed

in a single rack, that is, stage rack 2 (see “Stage rack 2” on page 57). This rack can

be either a 16U high (minimum) rack or configured as an 8U double rack.

•Clearance at rear of units: To ensure an adequate clearance at the rear of the

units, we recommend that the rack depth, that is, the distance from the front rack

strip to the rear of the rack, is a minimum of 700 mm. This is to provide sufficient

free space to enable the DSP link cables to achieve their minimum bend radius.

•Securing the cables: We recommend that the

cables at the rear of the units be tidied using

lacing bars and cable ties. This should provide

optimum access to the rear of the units for

connecting other cables, switching the units

on/off etc., and give maximum visibility of the

units’ LEDs for determining communication

status, link status, condition of audio etc. The

picture (right) shows a good example of how

this can be done. For more information on

cabling, refer to “Stage rack 2” on page 57.

Wiring instructions 57

DL451 Modular I/O

Operator Manual

Stage rack 2

Stage rack 2, also known as the “DL461/DL471 engine rack”, contains the two routers

and 10 DSP units.

Important:

In general, the physical location of the hardware units within each rack is not

critical, and alternative configurations are acceptable for different packaging

preferences. However, best practice is to mount the DL471 units in numerical

order, which will aid quick identification and fault finding.

DL471 unit ID numbers are located on stickers on the top cover of each device and also

on the carton. These must be noted prior to build-up and connected, as shown, in

numerical sequence. Please note that once initially configured, the ID numbers are

displayed on the top row of the DL471 screen and role numbers are on the bottom row.

The role numbers are dynamic and, therefore, may change during system operation.

Wiring instructions

This section gives the system cabling details for the XL8-specific equipment and,

although it is laid out in recommended order, this order is not critical.

When making the connections, please make sure they match those in “XL8 system

interconnections” on page 60. Further details are shown in “Cable type and function”

on page 62.

>> To connect both routers together

Important:

Without this connection system snake redundancy will be compromised.

Connect the routers via their Ethernet socket of the control expansion section on

each router’s rear panel (see “System interconnection panel” on page 253).

>> To connect the XL8 to the routers

Connect the ‘snake’ (optical or copper) from the X snake socket on the rear of the XL8

Control Centre to the appropriate snake socket on the X Router. Repeat for the Y

Router using the Y socket on the XL8 Control Centre.

>> To connect the routers to the DSPs (Stage rack 2)

•In AES50 audio - bank 0 on the X router, connect the 10 sockets to the AES50

audio X socket on the DSP units. Repeat for the Y router, using the equivalent Y

sockets.

•In Ethernet control bank on the X router, connect the 10 sockets to the Ethernet

control X socket on the DSP units. Repeat for the Y router, using the equivalent Y

sockets.

>> To connect the routers to the Stage rack 1 units

•Mic splitters: In AES50 audio - bank 1 on the X router, connect sockets 1 and 2 to

the AES50 audio - A X sockets on the Mic Splitters. Repeat for Y router, using the

mic splitters’ Y sockets.

•Line I/O units: In AES50 audio - bank 1 on the X router, connect sockets 5 and 6

to the AES50 audio X sockets on the line I/O units. Repeat for Y router, using the

line I/O units’ equivalent Y sockets.

58 Appendix G: Setting Up An XL8 System

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Operator Manual

>> To connect the routers to the Stage rack 3 units

•Mic splitters: In AES50 audio - bank 1 on the X router, connect sockets 3 and 4

to the AES50 audio - A X sockets on the mic splitters. Repeat for the Y router,

using the mic splitters’ Y sockets.

•Line I/O unit: In AES50 audio - bank 1 on the X router, connect socket 6 to the

AES50 audio X socket on the line I/O unit. Repeat for the Y router, using the

line I/O units’ equivalent Y socket.

>> To connect the XL8 to the line I/O units (FOH rack)

Connect the AES50 audio X sockets on the rear of the XL8 Control Centre to the

AES50 audio X socket on both of the line I/O units in the FOH rack. Repeat for the Y

sockets.

>> To connect the XL8 to the RAPIDE

Connect one of the eight ETHERNET (EtherCon® XLR) sockets on the rear of the

RAPIDE unit to the Ethernet control 1 socket of the active network (X or Y) on the

rear of the XL8 Control Centre (see “XL8 system interconnections” on page 60).

>> To daisy chain the DSP units

Important Note:

Do not connect a cable to like numbered sockets, that is, “0” to “0” or “1” to

“1”, as the DSPs will not work; socket numbers are printed to the right of each

socket.

There are two default configurations available, depending on the lengths of the

interconnecting DSP cables supplied, that is, 0.25 m cables or 0.5 m cables. Both

options contain a long cable for connecting the top and bottom units, and the 0.25 m

option has an additional long cable for connecting units AMU 2 and AMU 9.

A cable’s length (cm) can be determined from a three-digit number contained

within its part number (printed on a label attached to the cable). For example, in

a part number of “14150-EZBB-050-0LC 060425TD” the “-050-” indicates a

length of 50 cm.

Connect the DSPs together as shown in the following diagram, according to the cables

supplied with your system. (In the diagram, the cables are coloured and the sockets

numbered to help distinguish them.)

Wiring instructions 59

DL451 Modular I/O

Operator Manual

Figure 7: Stage rack 2 - DSP wiring options

Stage rack 2 0.25 m cable option

AMU 2

AMU 3

AMU 4

AMU 5

AMU 6

AMU 7

AMU 8

AMU 9

AMU 10

AMU 1 1

1

2

6

3

8

4

7

2

9

5

8

4

10

6

9

5

3

10

7

0.5 m cable option

AMU 2

AMU 3

AMU 4

AMU 5

AMU 6

AMU 7

AMU 8

AMU 9

AMU 10

AMU 1 1

1

2

2

3

3

4

4

5

5

6

6

7

7

8

8

9

9

10

10

60 Appendix G: Setting Up An XL8 System

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Operator Manual

XL8 system interconnections

This diagram shows the network interconnections for a typical FOH XL8 system.

1

1

1

2

5

1

2

5

12345678

12345678

A

A

B

Rear of FOH XL8 Control Centre

Stage rack 1

Note: All connections

are dual redundant, so

the system can operate

quite normally using

either the X or Y cables.

5 4 3 2 1

6 7 8 9

10

5 4 3 2 1

6 7 8 9

10

5 4 3 2 1

6 7 8 9

10

2

2

3

3

4

4

5

5

6

6

7

7

8

8

9

9

1010

2

2

3

3

4

4

5

5

6

6

7

7

8

8

9

9

1010

C

C

C

C

C

C

C

C

C

D

Y

Router/router

inter-connection

RAPIDE

Connect to both X and

Y networks

6

6

B

ID: 1

Inputs: 1 - 24

IP: 192.168.32.1

ID: 2

Inputs: 25 - 48

IP: 192.168.32.2

ID: 3

Config: O/O/D

IP: 192.168.36.3

ID: 4

Config: O/O/D

IP: 192.168.36.4

AMU 2

AMU 3

AMU 4

AMU 5

AMU 6

AMU 7

AMU 8

AMU 9

AMU 10

IP: 192.168.128.10

ID and IP numbers of the above DSPs run sequentially

between AMU 1 and AMU 10:

ID: AMU 1 = 11 through to AMU 10 = 20, inclusive.

IP: AMU 1 = 192.168.20.11 through to AMU 10 =

192.168.20.20, inclusive.

5 4 3 2 1

6 7 8 9

10

5 4 3 2 1

6 7 8 9

10

5 4 3 2 1

6 7 8 9

10

D

Stage rack 2

X

IP: 192.168.128.9

2

2

1

1

CAMU 1

2

2

2

2

1

1

XL8 system interconnections 61

DL451 Modular I/O

Operator Manual

1

1

X router’s AES50 audio - bank 1 connectors to

AES50 audio - A X connector on mic splitters and

AES50 audio X connector on line I/O boxes

Control centre AES50 audio Y connectors to FOH

rack line I/O unit AES50 audio Y connectors

33

44

77

A

A

B

1

1

1

1

1

1

1

1

Stage rack 3

Control centre AES50 audio X connectors to FOH

rack line I/O unit AES50 audio X connectors

Control centre snake/optical X and Y

connectors to appropriate X or Y router’s

snake/optical connector

Control centre snake/CAT6e X and Y

connectors to appropriate X or Y router’s

snake/CAT6e connector

X router’s AES50 audio - bank 0 connectors

to AES50 audio X connector on DSP units

Y router’s AES50 audio - bank 0 connectors to

AES50 audio Y connector on DSP units

X router’s Ethernet control connectors to

Ethernet control X connectors on DSP units

Y router’s Ethernet control connectors to

Ethernet control Y connectors on DSP units

Y router’s AES50 audio - bank 1 connectors to

AES50 audio - A Y connector on mic splitters and

AES50 audio Y connector on line I/O boxes

AMic splitter

BLine I/O box

Link DSP backbone; see “To daisy chain the DSP

units” on page 58

CDSP unit

DRouter (X and Y)

Key

Note: For connections specific to the 19” rack units,

please refer to their respective operator manuals

Router interconnection across Ethernet connectors

(control expansion port). System snake

redundancy will be compromised without it!

22

11

B

B

FOH rack

Caution!

Don’t forget the

interconnection

between the two

routers, as system snake

redundancy will be

compromised without it.

RAPIDE “ETHERNET” connector to Ethernet

control 1 connector on the control centre

ID: 3

Inputs: 49 - 72

IP: 192.168.32.3

ID: 4

Inputs: 73 - 92

IP: 192.168.32.4

ID: 5

Config: O/O/D

IP: 192.168.36.5

ID: 1

Config: I/O/D

IP: 192.168.36.1

ID: 2

Config: I/O/D

IP: 192.168.36.2

ID = identification number

IP = internet protocol (that is, network address)

Config = configuration

I/O/D = input/output/digital

O/O/D = output/output/digital

62 Appendix G: Setting Up An XL8 System

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Operator Manual

Cable type and function

The following table shows the type, terminations and function of the XL8 system’s

interconnecting cables. Please read the table in conjunction with the network

interconnections diagram on page 60.

Key Cable From To Description

Cat 5e with

EtherCon®

XLRs

X Router

(Ethernet

connector in

expansion

port)

Y Router

(Ethernet

connector in

expansion

port)

Carries redundancy information for

the digital ‘snake’.

Cat 5e with

EtherCon®

XLRs

RAPIDE

(ETHERNET n

connector)

Control centre

(Ethernet

control 1

connector)

Carries information on fader

positions.

Cat 5e with

EtherCon®

XLRs

Control centre

(AES50 audio

X connector)

I/O unit

(AES50 audio

X connector)

Carries a bi-directional combination of

24 channels of 96kHz audio plus

5Mbs of control data.

Cat 5e with

EtherCon®

XLRs

Control centre

(AES50 audio

Y connector)

I/O unit

(AES50 audio

Y connector)

Carries a bi-directional combination of

24 channels of 96kHz audio plus

5Mbs of control data.

Optical

‘snake’ with

Neutrik

OpticalCon®

connectors

Control centre X/Y Router Carries a bi-directional combination of

192 channels of 96KHz audio plus

200Mbs of control data.

Cat 6e

‘snake’ with

EtherCon®

XLRs

Control centre Router Carries a bi-directional combination of

192 channels of 96KHz audio plus

200Mbs of control data.

Cat 5e with

EtherCon®

XLRs

X Router

(AES50 audio

bank 1)

DSP (X) Carries a bi-directional combination of

24 channels of 96kHz audio plus

5Mbs of control data.

Cat 5e with

EtherCon®

XLRs

Y Router

(AES50 audio

bank 1)

DSP (X) Carries a bi-directional combination of

24 channels of 96kHz audio plus

5Mbs of control data.

Cat 5e with

EtherCon®

XLRs

X Router

(Ethernet

control X)

DSP (X) Carries standard 100bs Fast Ethernet

data.

Cat 5e with

EtherCon®

XLRs

Y Router

(Ethernet

control X)

DSP (Y) Carries standard 100bs Fast Ethernet

data.

Cat 5e with

EtherCon®

XLRs

Y Router

(AES50 audio

bank 0)

Mic splitter (Y) Carries a bi-directional combination of

24 channels of 96kHz audio plus

5Mbs of control data.

Cat 5e with

EtherCon®

XLRs

X Router

(AES50 audio

bank 0)

Mic splitter (X) Carries a bi-directional combination of

24 channels of 96kHz audio plus

5Mbs of control data.

3M cable with

50-way

connectors

DSP (link 0)DSP (link 0) Carries a proprietary data format for

connecting the DSP units together to

form the DSP loop.

1

1

1

1

1

1

1

1

1

1

1

Powering the XL8 system 63

DL451 Modular I/O

Operator Manual

Powering the XL8 system

The following details the recommended power up and power down procedures for the

XL8 system.

>> To power up the XL8 system

Important Note:

DO NOT switch on the speaker sub-system until after the start-up of the XL8

system has been completed.

After all XL8 system interconnections have been made (see Chapter 30 “Panel

Connections”), start up the XL8 system:

1Make sure that all of the XL8 system equipment is switched off, that is, the XL8

Control Centre, speaker sub-system, DL431 mic splitters, DL451 modular line I/O

units, DL461 routers and DL471 DSP units.

2Switch on the XL8 Control Centre (see “To switch on the XL8 Control Centre” on

page 64).

3On the XL8 Control Centre, move all of the monitor and master channel faders to

the minimum position and mute all of the master channels. The master channels

can be found in the mix and output fast zones (see “XL8 control surface” on

page 7).

4Switch on the DL431 Mic Splitters.

5Switch on the DL451 Modular I/O units.

6Switch on the DL471 DSP units.

7Switch on the DL461 Routers.

8After the status LEDs (top of each GUI screen on the XL8 Control Centre) turn

green, switch on the speaker sub-system.

9Switch on the audio source and start playing the audio.

10 On the XL8 Control Centre, check that the audio inputs are routed to the master

channels. Then, unmute the master channels and gradually increase their faders,

while listening to the sound levels from the speakers.

If there are no sounds at all from the speakers when the faders are at maximum, move

the faders to below the 0dB level and check if the audio is muted somewhere along the

input paths and also check that the individual speakers are switched on. If there is still

no sound from the speakers, contact Midas Technical Support.

>> To power down the XL8 system

Important Note:

BEFORE switching off any of the XL8 system components, make sure to mute

the audio from the speakers and switch off the speaker sub-system.

1Mute the audio from the speakers and switch off the speaker sub-system.

2Switch off the DL431 Mic Splitters.

3Switch off the DL451 Modular I/O units.

4Switch off the DL471 DSP units.

5Switch off the DL461 Routers.

6Switch off the XL8 Control Centre (see “To switch off the XL8 Control Centre” on

page 65).

64 Appendix G: Setting Up An XL8 System

DL451 Modular I/O

Operator Manual

Switching the XL8 Control Centre on/off

Carry out the following to switch the XL8 Control Centre on/off in a safe manner,

observing all WARNINGS and Cautions.

>> To switch on the XL8 Control Centre

WARNING!

DO NOT INSERT OR REMOVE A POWERCON® CONNECTOR

INTO/FROM REAR OF CONTROL CENTRE WITH MAINS POWER AND

ANY OF THE MAINS BAY SWITCHES ON. YOU MUST MAKE SURE ALL

MAINS BAY SWITCHES ARE OFF AND MAINS IS SWITCHED OFF AT THE POWER

OUTLET(S) FIRST.

Caution!

Before switching on, check that all monitor loudspeaker power

amplifiers are turned off or muted.

After connecting up the audio cables, carry out the following:

1Plug the two control centre’s mains PowerCon® cables into the mains power

outlets.

2Insert the two mains PowerCon® connectors into the PowerCon® sockets on rear

of control centre, observing the WARNING! above. Then, lock each one by

twisting the PowerCon® connector about 90° (1/4 turn) clockwise; you should

hear a click when it has locked in place. Check that both PowerCon® connectors

are securely fitted.

3Observing the Caution! above, switch on all five bay mains on/off switches, one

after the other. It is important that you don’t switch on two or more

switches simultaneously.

4The control centre will power up; the GUI will display the default screens and all

the controls will be set to default. You are now ready to start using the XL8

control centre.

1

Mains

outlet

Mains

plug

x5

3

Rear of XL8 Control Centre

x2

2

PowerCon®

connector

PowerCon®

socket

Setting up the ID of the DL4n1 units 65

DL451 Modular I/O

Operator Manual

>> To switch off the XL8 Control Centre

1Make sure you have saved any shows, scenes or settings you require (see

“Saving your show files to a USB memory stick” on page 56).

2At the GUI, choose homePreferencesShutdown System.

3At the Shutdown ENTIRE system? prompt, click OK. This initiates the

shutdown down sequence.

During the shutdown sequence the GUI screens will shutdown and all of the LCD

select buttons on the control surface will turn red. To inform you of the shutdown

status, the LCD select buttons in the input bays and VCA/POP group sections will

also display individual and contiguous text messages, respectively.

When the shutdown sequence has finished the LCD select buttons on the control

surface will turn green, and the appropriate ones will also display text messages,

accordingly.

Important:

During the shutdown sequence, when the LCD select buttons on the

control surface are red, do not switch off the mains power supply, and

when they are green, it is OK to switch off the mains power supply.

4Make sure that the shutdown sequence has finished, and then switch off the five

bay mains on/off isolator switches (rear of control centre), one at a time.

5Disconnect the two mains PowerCon® connectors from the PowerCon® sockets

on rear of XL8 Control Centre. To unlock them, twist by about 90° (1/4 turn)

anti-clockwise.

Setting up the ID of the DL4n1 units

After connecting up your XL8 network system, you will need to set up the ID of the

DL431 Mic Splitter, DL451 Modular I/O and DL471 DSP units (if they don’t already have

the ID you want). This is done via the control panel of the unit.

66 Appendix G: Setting Up An XL8 System

DL451 Modular I/O

Operator Manual

Thank you for reading through this Operator Manual.

We hope you found it useful. Please feel free to send

us your comments.

More detailed information on the XL8 can be found in

the XL8 Live Performance System Owner’s Manual

(part number DOC02-XL8). This is available for

download from our website.

Our contact details and website address can be found

at the front of this document.

Midas Klark Teknik Limited

Klark Industrial Park, Walter Nash Road,

Kidderminster. Worcestershire. DY11 7HJ. England.

Tel: +44 1562 741515, Fax: +44 1562 745371

Email: info@midasklarkteknik.com

Website: www.midasconsoles.com

© 2010 Red Chip Company Ltd.