The Federal Signal M2 system is the most flexible series of high fidelity, multi-channel solid state digital

audio playback systems available to the industry.

The M2 retrieves MPEG audio data from non-volatile PCMCIA FLASH memory, eliminating the need for

battery backup, and delivers superb full bandwidth sound quality.

The M2 is offered in the following configurations:

M2.1 Single Balanced Stereo audio channel, 10 message

input selections, RS232, wall mount package

M2.1+1 Dual Balanced Stereo audio channels, 10 message

input selections each, RS232, wall mount package

M2.2 Single Balanced Stereo audio channel, 20 message

input selections, RS232, wall mount package

M2-RM-x M2 rack mount packaging. 1U package contains power

supply and houses up to 3 M2 modules. Must be

ordered as a system, not field upgradable.

Messages are stored on PCMCIA FLASH memory cards(sold separately). Messages are randomly and

instantly accessible. Dynamic Message Length (DML) technology has been incorporated in the M2

allowing each of the messages to be of different duration. DML also provides for replacement messages

to be a different length than the original, maximizing memory efficiency and compatibility with future

applications.

Messages are stored in MPEG I, Layer II format. Composer software allows a Windows computer to

create entire programs with .WAV files then converts them to MPEG. The MPEG files then may be

copied to the a PCMCIA drive on the computer or downloaded directly to the M2 over the RS232 port

Message playback is controlled by simple contact closures or by RS232 commands. Audio outputs are

balanced and level is controlled via potentiometers. Form C relay connections are provided to indicate

that the M2 is playing.

The M2 offers several different playback modes to accommodate different applications. Play/repeat,

Play once per closure, Play while active, and Retrigger allow the user to customize input logic. Message

repetition and delay between messages are user selectable as well.

The M2's small size, industrial construction and the absence of moving parts makes it ideal for

automatic unattended operation, especially in harsh environmental or mobile conditions.

Sample Rate: 48kHz

Dynamic Range: 90dB

Frequency Resp.: 20Hz - 20kHz

THD: <0.01% at 1kHz

Type: Balanced, analog

Mode: Stereo or dual mono*

Connection: Pluggable euro terminals

Level: +4dB max., 150 ohm

Adjust: Potentiometer

Type: Dos format PCMCIA FLASH

Input Voltage: 12VDC @ 1 amp

Connection: 2 pin euro terminal

Compressed: MPEG 1, Layer II

MPEG Data

Rates(mono): 7kHz = 32k bits per sec.

15kHz = 64k bits per sec.

20kHz = 128k bits per sec.

Control Inputs: Individual message start,

stop

RS232: 9600 baud(115.2K optional),

No parity, 8 bits, 1 stop bit

Relay Outputs: Playing

Interface: Euro terminals

Wall Mount/Table top - 5.7"W x 12" L x 2.4" H

Rack mount(optional) - 1U

Chassis - aluminum extrusion, painted

M2