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1.2. General 

Specifications 

 

Audio Quality 

Sample Rate: 

44.1kHz 

Dynamic Range: 

85dB 

Frequency Resp.: 

20Hz - 20kHz 

THD: 

<0.1% at 1kHz 

 
Audio Output 

Type: Balanced, 

analog 

Mode: 

Stereo or dual mono* 

Connection: 

Pluggable euro terminals 

Level: 

+4dB max., 150 ohm 

Adjust: Potentiometer 
 

Audio Memory 

Type: 

FAT formatted SD Card 

 

Power 

Input Voltage: 

12VDC @ 1 amp 

Connection: 

2 pin, 3.81mm euro terminal 

 

Audio Data Formats 

Compressed: 

MPEG 1, Layer III 

Rates(mono): 

7kHz = 32k bits per sec. 

 

15kHz = 64k bits per sec. 

 

20kHz = 128k bits per sec. 

 
Control I/O 

Control Inputs: 

Individual message start, stop 

RS232: 

115.2kbaud (9.6k optional),  
8 data bits,1 stop bit, no parity 

Relay Outputs: 

Playing 

Interface: 

2.5mm spring terminals 

 
Mechanical 

Wall Mount/Table top  5.7"W x 6" L x 2.4" H 
Rack mount                1U 
Chassis                       Aluminum extrusion, painted 

 

 

 

M3 User's Manual V 1.0 Revised 13, Sept 2011  

Page 5

 

Summary of Contents for M3

Page 1: ...ITAL AUDIO PLAYER User s Manual Version 1 0 Revised 13 Sept 2011 Doc 99 20 088 25 00 MACKENZIE LABORATORIES INC 1163 Nicole Court Glendora CA 91740 USA Tel 909 394 9007 Fax 909 394 9411 Web www mackla...

Page 2: ...ol lines 13 The unit must be securely attached to a wall board rack or table mounted Regulations FCC Part 15 Radio Frequency Interference The M3 generates and uses radio frequency energy and if not in...

Page 3: ...mmands 14 4 1 System functional commands 14 4 2 System configuration commands 14 4 3 System description commands 14 4 4 Enhanced System commands 14 4 5 RS232 Command Syntax 15 4 5 1 Play snippet comma...

Page 4: ...houses up to 4 M3 modules Must be ordered as a system not field upgradable Messages are stored on SD Card memory cards 1GB included Messages are randomly and instantly accessible Messages are stored a...

Page 5: ...Voltage 12VDC 1 amp Connection 2 pin 3 81mm euro terminal Audio Data Formats Compressed MPEG 1 Layer III Rates mono 7kHz 32k bits per sec 15kHz 64k bits per sec 20kHz 128k bits per sec Control I O Con...

Page 6: ...2 M3 1 1 Dual Balanced Stereo audio channels 10 message input selections each RS232 wall mount table top package Interfaces of M3 1 PLUS Channel 2 CH2 Left channel balanced audio output Right channel...

Page 7: ...messages the memory will be shipped separately Refer to Section 5 for additional information on checking memory 8 Connect and apply power 9 Test unit operation 2 2 Configuration and Features M3 1 M3 1...

Page 8: ...message playback Start 1 Connect to common for message 1 playback Start 2 Connect to common for message 2 playback Start 3 Connect to common for message 3 playback Start 4 Connect to common for messag...

Page 9: ...e confusing to the listener Allowing a delay time can make the playback easier to understand Global setting for all messages 3 4 One second delay between plays Five second delay between plays Ten seco...

Page 10: ...message queuing Message queuing allows the user to input multiple momentary activation s to the M3 causing each of the messages to be played in the order they were received The queue length will be 16...

Page 11: ...ects a memory key with only an empty Upload folder and not other folders all audio files will be copied from the M3 into this folder on the memory key If both a Complete and a Delta folder exist on th...

Page 12: ...stop message playback Start 1 Connect to common for message 1 playback Start 2 Connect to common for message 2 playback Start 3 Connect to common for message 3 playback Start 4 Connect to common for...

Page 13: ...message 20 playback Com Connecting any input to common activates the function The Stop and Common inputs are parallel to the corresponding inputs on the 1 10 connector 3 AUDIO FILE FORMATTING The M3 u...

Page 14: ...ow control The default baud rate is 115 200 The following commands are supported by the M3 system over this port 4 1 System functional commands Play snippet PLY I Stop playing STP ALL System reset RST...

Page 15: ...tion for more details The PLY command can be suffixed with I making the command PLYI When this command is issued to a particular channel any currently playing message will be halted and the snippet sp...

Page 16: ...Command body Filename Files can be written to the memory card The process is initiated using this command which after received places the system into a mode awaiting the start of a Y Modem download pr...

Page 17: ...cognized the system will output Invalid value please re enter and the command will be ignored 4 5 8 Restore Default Configuration Command code CFG Command body none Any settings configured over the RS...

Page 18: ...d by this setting Example DLY10 CR will set the delay time before a message play to 10 seconds Command response Delay time set to 10 seconds If the user enters DLY with out any suffix the system will...

Page 19: ...mmand body a b a Snippet Number acceptable values any valid Snippet b Priority Level acceptable levels 0 to 1 default value 1 This command is basically a snippet enable disable command that can be exp...

Page 20: ...e See above 4 5 16 Command Listing Command code LST Command body None Displays the list of all supported commands available to the user The response will be formatted in the following way System funct...

Page 21: ...ace or a comma Example TIM 12 59AM CR will set the time to 12 59AM Command response Time set to 12 59AM If the user enters TIM with out any suffix the system will respond with the current setting Exam...

Page 22: ...t provided in the command string the value will default to channel 1 Example TRE 3 1 CR will set the Bass to 3dB on channel 1 Example TRE 3 1 CR will set the Bass to 3dB on channel 1 Example TRE 3 2 C...

Page 23: ...e memory card from the M3 4 Replace cover and secure with the four mounting screws 5 2 Installation 1 Unscrew the four mounting screws and remove the cover plate to expose the memory card holder 2 Ali...

Page 24: ...gital Message repeaters are the ideal audio announcement solutions for Public Address Amusement Entertainment Museum and Exhibit applications Self contained solid state systems offer unparalleled reli...

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