Audio-Technica AT-DMM828 Manual de Usario

Audio-Technica consola de mezclas AT-DMM828

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AT-DMM828

Digital Matrix Mixer

Installation and Operation Ver.2

AT-DMM828

Digital Matrix Mixer

Installation and Operation

Warning:

To prevent ﬁre or shock hazard, do not expose this apparatus to rain or

moisture.

Caution:

To avoid electric shock, do not open the cabinet.

Refer servicing to qualiﬁed personnel only.

To prevent ﬁre, do not place any naked ﬂame sources (such as lighted

candles) on this apparatus.

To prevent ﬁre, do not cover the ventilation of this apparatus with

newspapers, table-clothes, curtains, etc.

Do not expose this apparatus to drips or splashes.

Do not place any objects ﬁlled with liquids, such as vases, on this apparatus.

Do not install this apparatus in a conﬁned space such as a bookcase or

similar unit.

To install this apparatus only in the place where ventilation is good.

This apparatus should be located close enough to the AC outlet so that you

can easily grasp the power cord plug at any time.

In case of emergency, disconnect the power cord plug of this apparatus

quickly.

This apparatus with Class

Ⅰconstruction shall be connected to the AC outlet

with a protective grounding connection.

This apparatus is not disconnected from the mains as long as it is connected

to the AC outlet, even if the unit itself has been turned off.

Important Safety Instructions

1) Read these instructions.

2) Keep these instructions.

3) Heed all warnings.

4) Follow all instructions.

5) Do not use this apparatus near water.

6) Clean only with dry cloth.

7) Do not block any ventilation openings. Install in accordance with the

manufacturer’s instructions.

8) Do not install near any heat sources such as radiators, heat registers,

stoves, or other apparatus (including ampliﬁers) that produce heat.

9) Do not defeat the safety purpose of the polarized or grounding-type

plug.

A polarized plug has two blades with one wider than the other.

A grounding type plug has two blades and a third grounding prong.

The wide blade or the third prong are provided for your safety.

If the provided plug does not ﬁt into your outlet, consult an electrician

for replacement of the obsolete outlet.

10) Protect the power cord from being walked on or pinched particularly at

plugs, convenience receptacles, and the point where they exit from the

apparatus.

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

12) Use only with the cart, stand, tripod, bracket, or

table speciﬁed by the manufacturer, or sold with the

apparatus.

When a cart is used, use caution when moving the cart/

apparatus combination to avoid injury from tip-over.

13) Unplug this apparatus during lightning storms or when unused for long

periods of time.

14) Refer all servicing to qualiﬁed service personnel. Servicing is required

when the apparatus has been damaged in any way, such as power-

supply cord or plug is damaged, liquid has been spilled or objects have

fallen into the apparatus, the apparatus has been exposed to rain or

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

Caution for FCC

You are cautioned that any changes or modiﬁcations not expressly approved

in this manual could void your authority to operate this equipment.

Warning for FCC

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

to the　following two conditions: (1)This device may not cause harmful

interference, and(2) this device must accept any interference received,

including interference that may cause undesired operation.

Note: This equipment has been tested and found to comply with the limits for

a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are

designed to provide reasonable protection against harmful interference in a

residential installation. This equipment generates, uses and can radiate radio

frequency energy and, if not installed and used in accordance with the

instructions, may cause harmful interference to radio communications.

However, there is no guarantee that interference will not occur in a particular

installation. If this equipment does cause harmful interference to radio or

television reception, which can be determined by turning the equipment off

and on, the user is encouraged to try to correct the interference by one or

more of the following measures:

Reorient or relocate the receiving antenna.

Increase the separation between the equipment and receiver.

Connect the equipment into an outlet on a circuit different from that to

which the receiver is connected.

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

IC statement

CAN ICES-3 (B)/NMB-3(B)

About Power Cord

This model does not include AC power cord.

Therefore, you have to purchase it at your local store. You can conﬁrm it at

“Power Cord List”.

Power Cord List

Power supply cord for 120 Vac power supply in U.S.A, Canada :

Approved by UL, CSA

Detachable, rated minimum 125 V, minimum 10 A, marked VW-1. Includes 3 x

18 AWG, Type SVT ﬂexible cord. Minimum length 1.5 m.

One end terminates in a parallel blade, molded-on attachment plug rated 125

V, 10 A with a polarized NEMA 5-15P blade conﬁguration.

Other end terminates in an appliance coupler.

Introduction

Please Note!

This manual assumes use of microphone-level inputs and line-level output

for most typical SmartMixer applications. However, all inputs may be

individually switched via the included AT-DMM828 Control Software to

achieve any combination of mic-level and line-level inputs.

Signal ﬂow can be changed via the included AT-DMM828 Control Software.

Refer to Software Manual for more information.

About the AT-DMM828

AT-DMM828 is a microprocessor-controlled, programmable, automatic-

switching eight-channel matrix mixer. It can be used with low-impedance

either dynamic or condenser microphones (including wireless microphone

systems), as well as line-level sources.

AT-DMM828 is designed to improve audio quality in broadcast, sound-

reinforcement and recording applications. One way it achieves this is

by keeping the number of open microphones to minimum, thus reducing

background noise, feedback and other distractions, while providing instant,

completely transparent switching between channels.

Each of the eight balanced inputs provides switchable 48Volt phantom

power; attenuation is also selectable on each input to allow use with line-

level signals. The mixer's outputs are balanced and non-inverting. All audio

connections terminate in block screw connectors.

Up to 16 units of AT-DMM828 (a total of 128 channels inputs) can be daisy-

chained via CAT6 cable, which carries control bus, audio, and conﬁguration

data between mixers.

Multiple mixers linked in this way will operate as if they are a single mixer.

Therefore, microphones activated on any mixer will cause the appropriate

switching functions to occur. The link connectors are not compatible with

LAN.

Each AT-DMM828 includes two separate external control system interfaces:

Individual channel contact closures (via DB25 connector) and PC control (via

RS232 connector or USB). The RS232 connector can also be used to connect

an external control system (e.g. Crestron

® or AMX®) using “open disclosure

communication protocol” to control the mixer.

AT-DMM828 Features

• Eight balanced inputs allow to be used with either mic-level or line-level

signal.

Each input provides:

°　 Smart Mixer V1 (Gating mode)

°　 Smart Mixer V2 (Gain Sharing mode)

*Supported by AT-DMM828 Ver.2 or later

°　 48V phantom power (individually selectable)

°　 Individual gain and sound volume controls

°　 Gate attenuation adjustable (0 dB to full mute in steps of 1 dB)

°　 Gate hold time adjustable (0.1 sec to 6.0 sec in steps of 0.1 sec)

°　 Mic on threshold level adjustable (Auto/Manual)

• DSP algorithm

°　 Signal level meter (Peak/RMS)

°　 Signal generator (Sine wave/Pink noise/White noise)

*input channel

only

°　 Parametric EQ (3 band/4 band)

°　 Filter (Low pass/High pass/Low shelving/High shelving/Notch/All

pass)

°　 Limiter

°　 Delay *output channel only

°　 8×8 full matrix-mixing (can be extended to 128×8 matrix-mixing)

• Selectable NOMA (Number of Open Microphones Attenuated)

°　 Automatic gain adjustment as each microphone is activated

• Selectable manual mode overrides automatic functions

• Linking capability for up to 16 units (up to 128 inputs)

• Selectable external connector’s pin assignment

°　 Gate status output (using for the Camera moving)*

°　 Gate On/Off

/Toggle

(using for input gate control by tactile switch)*

Mute On/Off/Toggle (

using for channel level control by tactile switch

Volume Up/Down (

using for channel level control by tactile switch

°　 VCA function (using for channel level control by external

potentiometer)

*Positive/Negative selectable

• Compatible with Crestron

® or AMX® systems

• All settings can be adjusted or modiﬁed through AT-DMM828 Control

Software

• Mounts in a single U 19” rack space (EIA Standard)

Especificaciones del producto

Marca:	Audio-Technica
Categoría:	consola de mezclas
Modelo:	AT-DMM828
Color del producto:	Wit
Ancho:	247 mm
Profundidad:	158 mm
Altura:	209 mm
Material de la carcasa:	Kunststof
Fácil de limpiar:	Ja
Material-del-cuchillo:	Roestvrijstaal
Aptas para el lavavajillas:	Ja
Tipo de máquina cortadora:	Handmatig
Plakdikte (máx.):	- mm
Cuchillas de acero inoxidable:	Ja