Technovision TecMP3A Operating Manual

Technovision TecMP3A Operating Guide

Technical Specifications

Sound File Format
Max. Number of Sound Files
Memory Type
Max. Memory Capacity
Max. Recording Time
Supply Voltage
Standby Current
Max. Audio Output
Serial Interface
Parallel Interface
Physical Dimensions
Interface Descriptions
Power Input Terminals: V+ & GD
Use a well-regulated DC power supply to obtain the best sound
quality. Connect the power supply's POSITIVE output to V+, and the
GROUND output to terminal G. There is also a 2.1mm barrel
connector on the side (center positive).
Speaker Output Terminals: L+ (left) & R+ (right)
The speaker outputs are single ended (unbalanced).
nc-8-no
SD
Power in
PW GD T8 T7 T6 T5 T4 T3
BUTTON 8
BUTTON 1
RESET
Technovision Interactive Inc.
MP3 (ISO 11172-3 up to 44.1KHz)
Parallel / Direct Mode: 8
Parallel / Binary Mode: 128
Parallel / Sequential Mode: 8x99
Parallel / Round-Robin Mode: 8
Parallel / Script Mode: 999
Serial Control: 999
SD / SDHC
2 GB (SD FAT/FAT16 formatted)
32GB (SDHC FAT32 formatted)
33+ hrs (MP3 @ 128kbps w/2G card)
12 ~ 30 VDC
60 mA
Stereo: 15W/channel (4 ohm load)
Mono: 55W bridged load (BLT)
RS-232 / RS-485
8 inputs, CMOS level logic
Case 5.3''x 4''x 1.35"
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Relay Outputs (with –R model)
T2 T1
(firmware version 1.7)
Busy Output Terminal: BY
This output is connected to the collector of a C2328A transistor
and can be controlled through script mode. In other modes it is
automatically turned on while playing audio, with a maximum sink
current of 200 mA.
System Reset Terminal: RS
Short terminal RS to the ground to reset the board. Minimum reset
duration is 100 ms.
Parallel Interface Terminals: T1 - T8 & GD
These inputs are internally pulled up to +5V through 10K resistors,
and protected with 1K in-line resistors. These inputs are enabled
by default but are disabled automatically if the serial port is
enabled.
Power Light (PWR)
The power light is turned on when power is applied.
Volume Pot (VOL)
Turn the knob clockwise to increase the output volume. It affects
both the speaker output and the line output.
Line Output (LINE): 1/8" Stereo Phone Jack
This jack provides single ended line output for external
amplification (TIP-L, RING-R, SLEEVE-GROUND)
Serial Interface Connector: DB9 Female
The Serial Interface supports either RS-232 (default) or RS-485,
but not both at the same time. To select RS-485, move the on-board
jumper J2 to the "485" setting. Note that the Serial Interface is
disabled by default, and it is mutually exclusive with the Parallel
Interface.
nc-4-no nc-3-no nc-2-no
RS BY GD V+ LINE BAL VOL
10-30VDC
POWER
-
SUPPLY
+
RELAY **see BY above**
-
Page 1 of 8
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Serial
Port
L+ GD R+
+
8 OHM
SPEAKERS
-
**NOTE**
+
LEFT Channel
is inverted to
-
allow for
bridged mono
mode – see page
2 for more
information.
www.technovision.com
11/2017