A SYSTEMS DMP81 Bedienungsanleitung

DMP81

User’s Manual

Manual del usuario

Automatic Mixer

Mezclador Automatico

English

DMP81

INTRODUCTION�� 2

FEATURES�� 2

CONTROLS and CONNECTIONS�� 3

FRONT PANEL�� 3

REAR PANEL�� 3

DIP SWTCH �� 4

INSTALLATION AND SETUP �� 5

RACK MOUNTING�� 5

CONNECTION �� 5

SPECIFICATIONS�� 6

Asystems reserves the right to alter any information contained within this

manual without prior notice�

V1�2 06/13/2016

TABLE OF CONTENTS

English

DMP81

RISQUE DE CHOC ELECTRIQUE

NE PAS OUVRIR

1. Read these instructions – All the safety and

operating instructions should be read before this

product is operated.

2. Keep these instructions – The safety and

operating instructions should be retained for

future reference.

3. Heed all warnings – All warnings on the appliance

and in the operating instructions should be

adhered to.

4. Follow all instructions – All operating and use

instructions should be followed.

5. Do not use this apparatus near water – The

appliance should not be used near water or

moisture – for example, in a wet basement or

near a swimming pool, and the like.

6. Clean only with dry cloth.

7. Do not block any ventilation openings. Install in

accordance with the manufacture’s instructions.

8. Do not install near any heat sources such

as radiators, heat registers, stoves, or other

heat.

9. Do not defeat the safety purpose of the polarized

or grounding plug. A polarized plug has two

blades with one wider than the other. A grounding

plug has two blades and a third grounding prong.

The wide blade or the third prong is provided for

your outlet, consult an electrician for replacement

of the obsolete outlet.

10. Protect the power cord from being walked on or

pinched particularly at the plugs, convenience

receptacles, and at the point where they exit from

the apparatus.

11.

the manufacturer.

12. Use only with the cart, stand, tripod,

manufacturer, or sold with the

apparatus. When a cart or rack is

used, use caution when moving the

cart/apparatus combination to avoid

injury from tip-over.

13. Unplug the apparatus during lightning storms or

when unused for long periods of time.

14.

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 has been

exposed to rain or moisture, does not operate

normally, or has been dropped.

15. CAUTION: These servicing instructions are

reduce the risk of electric shock, do not perform

any servicing other than that contained in the

do so.

16.

building-in space such as a book case or similar

unit, and remain a well ventilation conditions at

open site. The ventilation should not be impeded

by covering the ventilation openings with items

such as newspaper, table-cloths, curtains, etc.

17. WARNING: The mains plug/appliance coupler is

used as disconnect device, the disconnect device

shall remain readily operable.

18. This apparatus is for professional use only.

19. WARNING:

shock, do not expose this apparatus to rain or

moisture. The apparatus shall not be exposed to

liquids, such as vases, shall not be placed on

apparatus.

20.

an equilateral triangle is intended to alert

the user to the presence of non-insulated

“dangerous voltage” within the product’s

magnitude to constitute a risk of electric

shock.

Warning: To reduce the risk of electric shock, do

not remove cover (or back) as there are no user-

personnel.

The exclamation point within an equilateral

triangle is intended to alert the user to

the presence of important operating and

maintenance instructions in the literature

accompanying the appliance.

21. Protective earthing terminals. The

apparatus should be connected to a

mains socket outlet with a protective

earthing connection.

RISQUE DE CHOC ELECTRIQUE

NE PAS OUVRIR

ATTENTION

AVERTISSEMENT: POUR REDUIRE LE RISQUE DE CHOC

ELECTRIQUE, NE RETIREZ P AS LE COUVERCLE (OU L'ARRIERE),

PAS DE PIECE RE PARABLE PAR L'UTILIS ATEUR A L'INTERIEUR

CONFIEZ LES RE PARATIONS A UN PERSONNEL QUALIFIE .

IMPORTANT SAFETY INSTRUCTIONS

English

DMP81

1. INTRODUCTION

Designed uniquely for rack-mount required sound reinforcement scenarios, Asystems DMP81 automatic mixer combines

intuitive operation interface with state-of-art signal processing technology� Asystems DMP81 features 8 Mic/Line inputs

via balanced Euroblock and 8 unbalanced 1/4” TRS insert jacks� All 8 Euroblock input connectors provide individual

selectable +48V phantom power for condenser microphones and All 8 1/4” TRS insert jacks can directly route incoming

signal to other sound processing devices or be used as individual inputs or outputs� All channels are equipped with

physical Low-pass lter and High Frequency Shelving Filter knobs.

The on-board adaptive threshold distinguishes uctuating audio signal from background noise and continuously adjust

the audio signal to be louder than background noise� Furthermore, when several channels “receive” one particular signal

source, DMP81 can be set to controls the number of channels that activate when triggered by one signal source through

which the best input quality is guaranteed for every input channel� The last input source lock-on feature keeps the most

recently used channel activate to get a natural uninterrupted signal ow.

Asystems DMP81 also provides a 1/4” headphone output jack, an AUX input jack (both are with level control knob), and

LED indicators, o󰀨ering intuitive control that caters a wide-range of system setups�

2. FEATURES

● 8 balanced mic-line input channels (Euroblock connector) with selectable 48V phantom power per input channel

● 8 1/4” unbalanced insert jacks

● 1 balanced mono master output (Euroblock connector)

● Master output 3-mode peak limiter (+16 dbm/+ 8 dbm/+4 dbm)

● Last input source Lock-On

● One source activates only one channel, even if several channels “receive” that source�

● Individual gain control knob per channel

● On-board High Frequency Shelving Filter and HPF (High pass filter)

● 1/4” Headphone output with level control

● 1/4” AUX input with level control

● Seamless automatic mixing through dynamic channel gating and attenuation

● Fully functional compressors per input channel

● Accurate feedback silencing technology

English

DMP81

1. Input Level Control 1 - 8

Every input channel is equipped with a rotary knob for

adjusting the nal input level.

2. ON LED 1 - 8

Every input channel is equipped with an ON LED

which lights green when a signal is present in the input

channel, and will turn red when the signal peaks�

3. HPF (High Pass Filer) Control 1 - 8

Make adjustment by using slot screwdriver�

4. High Frequency Shelving Filter 1 - 8

Make adjustment by using slot screwdriver�

5. AUX Level Control

This rotary knob for adjusting the AUX input level�

6. SG LED (for AUX INPUT)

This LED will light up green when an output signal is

present and red when the signal peaks�

7. AUX INPUT 1/4” TRS Phone Jack

8. LIMITER LED (for MASTER OUTPUT)

Lights red when on-board limiter actives�

9. SG LED (for MASTER OUTPUT)

This LED will light up green when an output signal is

present and red when the signal peaks�

10. MASTER Level Control

This knob controls the level for MASTER output��

11. POWER LED

This LED indicator will illuminate when the DMP81 is

activated�

12. Power switch

Flick this switch to switch the unit on and o󰀨.

13. PHONES Level Control

This knob controls the level for the PHONES output

jack�

14. PHONES OUTPUT 1/4” TRS Phone Jack

For connecting headphone�

3. CONTROLS and CONNECTIONS

FRONT PANEL

15. AC Power Connector

The unit is supplied with power via a standard IEC

power cable from power source�

16. DIP Switch 1 (for adjusting setup options)

See section “DIP Switch”�

17. DIP Switch 2 (for turning phantom power ON/OFF)

See section “DIP Switch”�

18. MASTER OUT

DMP81 offers a single 3-pin Euroblock output

connector� This connector can be set as balanced or

unbalanced� (see section Installation and Setup)�

19. INPUT Connector 1 - 8 (Euroblock)

See section “Installation and Setup”�

20. INPUT Connector 1 - 8 (Balanced 1/4” TRS Insert

Jack)

See section “Installation and Setup”�

21. MIC-IN/LINE-IN Switch

Every input channel is equipped with a button switch

for setting MIC-IN/LINE-IN� For MIC-IN, set this button

to MIC, for LINE IN, set this button to LINE�

REAR PANEL

English

DMP81

DIP SWITCH

DMP81 is equipped with two DIP switches on the rear panel, which is o󰀨ering various setup options and for turning ON/OFF

the phantom power for each channel�

DIP Switch 1 (for adjusting setup options)

DIP Switch 2 (for turning phantom power ON/OFF)

This DIP switch is used for turning ON/OFF the +48V phantom power for each channel� The number labeled under each

switch is corresponding to the channel numbers�

Manual/Auto: In Manual mode, DMP81 works as a

standard 8x1 mixer� In Auto Mode, the input drops by

3 dB every time the number activated inputs doubles�

When in MANUAL mode, the master output drops by 9

dB when all 8 channels are activated� And it will increase

by 9 dB when in AUTOMATIC mode�

Last Mic Lock-On: And only the most recently activated

channel will be enabled until the another channel is

enabled. When this function is turned o󰀨, channel

disables after the preset hold time�

Switch Number 1 2 3 4 7 8

Switch Function Auto /

Manual

Last Mic

Lock-on

Hold

Time O󰀨-Att Limiter Threshold

Switch Up (On) Auto Enabled 0�4 sec -15db 7 Up

8 Up = LIM o󰀨 7 Up

8 Down =+16 dBm

Switch Down (O󰀨) Manual Disabled 1�0 sec -∞7 Down

8 Up =+8 dBm 7 Down

8 Down =+4 dBm

Hold Time: Adjusts the time an activated channel (which

is not locked on) remains on after the talker stops talking�

Settings are 0�4 seconds or 1�0 second�

O󰀨-Attenuation: Adjusts the o󰀨-attenuation level from

15 dB to innity (-∞). With the 15 dB setting, an unused

microphone is 15 dB lower in level than when it is

activated. With the -∞ setting, an unused microphone is

completely o󰀨.

Limiter Threshold: Adjusts the limiter threshold for

outputs� Settings are OFF, +16 dBm, +8 dBm, or +4 dBm�

English

DMP81

RACK MOUNTING

DMP81 is compatible with 19” audio equipment rack� Slide

the DMP81 in to the rack and secure it with four Phillips

screws and appropriate nuts (preferably square nuts)�

CONNECTION

Connect all necessary input and output devices� Input

can be achieved through 1/4” TRS phone jack, 1/4” TRS

Y-cable and correctly wired Euroblock connectors�

4. INSTALLATION AND SETUP

Euroblock connectors

1/4” TRS Y-cable

1/4” TRS Phone Jack

Balanced

1: Shield/Ground

2: Cold (-)

3: Hot (+)

Unbalanced

1: Shield/Ground

2: Link to PIN 1

3: Hot (+)

TIP: Send

Ring: Receive

Sleeve: Shield/Ground

English

DMP81

SPECIFICATIONS

DMP81

Input Connections 8 x Balanced Euroblock

Output Connections 1 x Euroblock, 8 x 1/4” TRS (insert/direct output)

Front Panel Indicators 8 x Input/Peak, 1 x Master Output/Peak,

1 x Power, 1 x Limiter

Hum and Noise <-120dB

Frequency Response 50Hz to 20KHz +/-2dB;-3dB corner at 25Hz

Input Impedance MIC: 3�2K , LINE: 14K , AUX: 7�5K

Input Clipping Level MIC: -11�8dBV , LINE:+23dBV , AUX:+23dBV

Output Impedance LINE Output :60Ω , Phone Output :110Ω

Output Clipping Level LINE Output :+21dBV , Phone Output :+21dBV

Total Harmonic Distortion <0�1% at +18dB output level, 50Hz to 20 KHz

Processor 40-bit oating point

Input A/D Conversion 24-bit

Output D/A Conversion 24-bit

Output Limiter

Type: Peak

Threshold Switchable: o󰀨, +4, +8, +16 (dBm at output)

Attack Time: 2 ms

Recovery Time: 300 ms

Indicator: Lights red when limiting occurs

Sample Rates 48 kHz

DIP Switches Auto/manual, Last-mic, hold time, o󰀨-att,

limiter threshold, 48V phantom power

Equalization

Low-frequency: 6 dB/octave cut, adjustable

corner from 28 to 315 Hz; High-frequency: +/-6 dB at 5 kHz,

+/-8 dB at 10 kHz, shelving

Auto-mixing Input level, output level, NOM attenuation max�

Phantom Power +48V DC

Power & Physical

Power Supply 120VAC/240VAC switching power supply, 15A Edison cable

Dimensions 480 x 295 x 45 mm / 18�89” x 37�4” x 1�77”

Español

DMP81

INTRODUCCIÓN�� 2

CARACTERÍSTICAS�� 2

CONTROLES y CONEXIONES �� 3

PANEL FRONTAL�� 3

PANEL POSTERIOR�� 3

INTERRUPTORES DIP�� 4

INSTALACIÓN Y CONFIGURACIÓN�� 5

MONTAJE RACK�� 5

CONNECTION �� 5

SPECIFICATIONS�� 6

TABLA DE CONTENIDOS

Asystems se reserva el derecho de modicar cualquier información

contenida en este manual sin previo aviso�

Español

DMP81

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