AUSTRALIAN MONITOR DMA1 User manual

DMA1
Digital Message Announcer
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 amplifier as well as stereo
inputs & outputs which allow it to be inserted in line with another
BGM feed.
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 files.
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.
At a Glance
> Plays MP3 files
> Standard SD card digital message storage
> On board Play, FF, Rew & Stop controls
(with remote capability)
> Contact closure file replay triggers
> RS485 control
> Capacity up to 255 messages
> Stereo In/Out
> Onboard 20 watt per channel D class
power amp
A More Thorough Examination...

Engineered and Distributed by AUDIO TELEX COMMUNICATIONS PTY LTD (ABN 78 001 345 482), 149 Beaconsfield 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 - [email protected] www.australianmonitor.com.au
Architecture & Engineering Specifications
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 (file 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 control
- Control of input volume and background
level with mixer function
- Separate bass and treble tone controls
- Loudness level control
- Automatic fade in
- Automatic fade out
Control keys 4 buttons REW, PLAY, STOP, FWD and
menu functions
Classification 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
The Digital message announcer shall be of compact size & replay MP3 message files 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 files & shall also have an onboard 20 watt per channel stereo power amplifier.
The Unit shall be an Australian Monitor DMA1.