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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

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.

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.

xiv Precautions

DL451 Modular I/O

Operator Manual

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

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 modular

1 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).

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.

2 4 5

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.

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

2 1

Mains IEC

connector

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 C and . 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”).

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

Menu 5

Menu flowchart (options 1 to 4) 11

DL451 Modular I/O

Operator Manual

ID range is from

1 to 10.

This example shows that

you have selected 7 as

the unit’s ID number

Default display will show new

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

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

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.

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.

20 Chapter 6: Operation

DL451 Modular I/O

Operator Manual

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

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

Output

Clocks

REMOTE

INTERROGAT

LED

MUTE

STATUS

LED

Output Clocks

Input Clocks

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

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.

Produktspecifikationer

Varumärke:	Midas
Kategori:	Mixerkonsol
Modell:	DL451
Färg på produkten:	Zwart
Vikt:	89 g
Sladdlängd:	2.9 m
Förpackningens vikt:	248 g
Förpackningens bredd:	160 mm
Djuppackning:	210 mm
Förpackningshöjd:	65 mm
Blåtand:	Nee
Anslutningsteknik:	Bedraad
Mikrofon avstängd:	Ja
Snabbstartsguide:	Ja
Brusreducering:	Ja
Förvaringsväska:	Ja
siffra:	1
Bärmetod:	Hoofdband
Rekommenderad användning:	Kantoor/callcenter
Typ av headset:	Stereofonisch
Impedans:	- Ohm
Placera högtalare hörlurar:	Supraaural
Hörlurars frekvensområde:	50 - 18000 Hz
3,5 mm-kontakt:	Nee
Mikrofontyp:	Boom
Förvaringstemperatur:	-20 - 70 °C
Hörlurskänslighet:	113 dB
USB-anslutning:	Ja
Hörlurar:	Ja
Förvaringsfuktighet:	11 - 95 procent
USB-kontakt:	USB Type-A
Mikrofonriktningstyp:	Unidirectioneel
Akustiskt system:	Open
Säkerhetsdatablad:	Ja
Mikrofonfrekvens:	150 - 6800 Hz
(Ytter) huvudpaketets höjd:	195 mm
(Ytter) huvudförpackningens bredd:	430 mm
(Ytter) huvudförpackningens bruttovikt:	6056 g
(Ytre) huvudpaketets längd:	620 mm
Kvantitet per (yttre) huvudkartong:	20 stuk(s)
(Inre) fraktpaketets vikt:	248 g
Drifttemperatur (TT):	5 - 45 °C
Relativ luftfuktighet i drift (VV):	20 - 85 procent
Typ produkt:	Headset
Harmoniserad systemkod (HS):	85183000
Laddbart batteri:	Nee
(Inner) fraktpaketets höjd:	65 mm
(Inre) fraktpaketets bredd:	160 mm
(Inre) fraktpaketets längd:	210 mm
Brusreducerande mikrofon:	Ja
Justerbar volym:	Ja