Australian monitor DMA1 DATASHEET

DMA1

Digital Message Announcer

At a Glance

> Plays MP3 fi les
> Standard SD card digital message storage
> On board Play, FF, Rew & Stop controls
(with remote capability)
> Contact closure fi le replay triggers

A More Thorough Examination...

The Australian Monitor Installation Series DMA1 digital message
announcer is a compact yet highly featured digital playback device.
Utilizing an SD card digital storage format the DMA1 delivers high
quality stereo audio in an MP3 format. Messages can be played or
triggered using the on-board controls, via remote switches, contact
closure or via RS485 serial control. The DMA1 also boasts an on
board 20 watt per channel D class power amplifi er as well as stereo
inputs & outputs which allow it to be inserted in line with another
BGM feed.

> RS485 control
> Capacity up to 255 messages
> Stereo In/Out
> Onboard 20 watt per channel D class
power amp

130 minutes of music ( at 128kbps sample rate ) can be stored in
the supplied 128MB memory card. The DMA1 supports memory
cards up to 1GB and variable bit rate music fi les.

The DMA1’s compact size belies the wealth of features it offers.
It is a highly innovative & cost effective digital message
storage & playback device that has a host
of commercial applications.

Architecture & Engineering Specifi cations

The Digital message announcer shall be of compact size & replay MP3 message fi les via SD card storage. The unit shall
provide stereo playback with stereo in & out facility. Messages shall be replayed via on board controls (with remote
capability), via contact closure or via RS485 serial control. The unit shall have capacity for storage of up to 255 high
quality MP3 fi les & shall also have an onboard 20 watt per channel stereo power amplifi er.

The Unit shall be an Australian Monitor DMA1.

Power supply 12-15VAC or 12-24VDC
Consumption in Standby 1 W
Protection internal fuse, 4A delayed
Capacity of extractable memory SD/MMC from 32MB to 1GB
Input absorption 5 mA
Formats accepted MPEG1 layer 3 (fi le MP3 from 64 to 160 Kbps)
Frequency Response 20 ~ 20.000 Hz (±3dB)
Signal/noise ratio > 90dB
Harmonic distortion < 0.1%
Output power 20+20W ( 24V / 4 Ω ) THD= 0.04%

Audio controls - General output volume contr ol

- Contr ol of input volume and background
level with mixer function

- Separate bass and tr eble tone controls

- Loudness level contr ol

- Automatic fade in

- Automatic fade out
Control keys 4 buttons REW, PLAY, STOP, FWD and

menu functions

Classifi cation IP30 on the basis of liquid and dust penetration
Size 102 (W) x 74 (D) x 19 (H) mm
Shipping Dimensions 360 (W) x 240 (D) x 80 (H) mm
Weight 1.5kg

Engineered and Distributed by AUDIO TELEX COMMUNICATIONS PTY LTD (ABN 78 001 345 482), 149 Beaconsfi eld Street, Silverwater, Sydney, NSW, 2128 Australia

NSW Tel: [phone] Fax: [phone] VIC Tel: [phone] Fax: [phone] QLD Tel: [phone] Fax: [phone] WA Tel: [phone] Fax: [phone]

SA Tel: [phone] Fax: [phone] NZ Tel: [phone] Fax: [phone] International Enquiries - [e-mail] www.australianmonitor.com.au