PAGE 1
updated
19/01/06
Golding Audio Ltd reserve the right to change specification of this or any product without prior notice being given. Golding Audio will not be held
responsible for any damage caused to any equipment or data, arising from use of the product mentioned herein.
Connection and General information
DMS3000
V2.20
MP3 Digital Audio Playback Card.
General
The DMS3000 is designed around industry standard MP3
compression technology. Audio data is stored on standard
multimedia cards (MMC). The DMS3000 series sound
stores can be recorded by the user with a suitable PC
equipped with an MMC card reader and sound card.
Message playback can be initiated in a number of ways
from a simple contact closure, RS485 or via
text command
files assigned to a particular trip input giving an incredible
degree of control over the sound store.
Specification
Board Size
100x160x25mm
Supply
12-18v DC @ 200mA
Audio Compression
MP3 (Mpeg1 Layer3)
Memory
MMC 64MB to 1GB
Trip Input Lines
5v active HI or LOW selectable
Stop / Start input
5v active LOW
Run Output
Open Collector
(Max 25v 150mA)
Control Output
Open Collector
(Max 25v 150mA)
Audio Outputs Line
0db Nominal (600 ohms)
Treble Control
+/- 10dB
Bass Control
+/- 10dB
General PCB layout. ( FIG 1 )
ISP Port
In Circuit Programming port used to update the DMS3000 operating
system. NO USER FUNCTION.
Display Port
2 x 16 character display port used on some cased unit models. VR4 of-
fers display contrast adjustment.
Test Push Button
Plays message number stated In control configuration file CTL?name.txt
(detailed later).
Gain Set Links
Links open give Line output level of 0dB nominal. With both links fitted
line level is boosted by +6dB.
I/O Connections
Power, Audio and Control pins of the DMS3000 Playback Card all appear
on the 64way DIN41612 edge connector (CON1) on the rear edge of the
PCB. ( If fitted )
Trip Inputs
- Pins A10-13 B10-13
Trip inputs can initiate playback of a stored message directly or start a
command file which in turn can call any available messages. The eight
trip inputs can be configured as ACTIVE HI or LOW via JP6 shown in
FIG
1
(default active LOW). Trip inputs can be individually configured as N/O
or N/C inputs (default N/O) in the CTL.txt file stored on the MMC card.
( detailed later )
Trip inputs can be configured as decimal or binary in the CTL.txt file
In decimal mode (default) 8 messages can be directly accessed.
In binary mode 255 messages are available.
Stop Input
- Pin A14
A LOW pulse on this line will stop and reset playback of any running mes-
sage or command file. If the stop input is held low it will prevent playback
of any recorded message. ( Stop input line 5v active low standard TTL
levels )
Start Input
-PinB14
When using binary trip inputs (255 messages) a LOW pulse on this line
will clock in the binary code presented on the 8 trip input lines and initiate
playback of the corresponding message.
When using decimal trip inputs (8 messages) this line is inactive.
RS485
Pins B15,A15
For future use. Do not connect.
FRAME Clock IN
Pin A16
42Hz clock from master sound store is input to this pin when using
sound stores in Master / Slave configuration.
FRAME Clock OUT
Pin B16
Output 42Hz clock to Slave sound stores when used in Master/Slave
configuration.
Run IN
Pin B17
Receives control signals from master sound store at start and end of
sound files for synchronisation when used in Master / Slave configuration
Run OUT
Pin B18
The RUN Output will provide a negative going signal for the duration of
any sound track that is playing. This signal is also used
when using a
Master / Slave configuration
Sync IN
Pin A17
Sync control signals when used in Master/Slave configuration.
Sync OUT
Pin A18
Sync control signals when used in Master/Slave configuration.
Control OUT
Pin B19
Programmable Open Collector transistor (Max 25v 200mA) controlled via
command.txt file
outp
command. ( detailed later )
RS485 channel 1
Pins A19,20
Balanced pair A19 = positive A20 = negative 10MHz SYSCLK IN/OUT or
RS485 Control.
DMS 3000 PCB
32
1
ROW A
ROW B
8
16
24
Golding Audio Ltd
Unit 8
Peartree Business Centre
Stanway Colchester
Essex CO3 0JN
Tel: 01206 762462 Fax: 01206 762633
Web Site: www.goldingaudio.co.uk
P la y
B u s y
S t a tu s
P o w e r
T E S T
M M C M e m o r y S lo t
IS P P o r t
L C D D i s p la y P o r t
+ 6 d B G a i n
If f i t te d
P u ll d o w n r e s i s t o r s
= A c ti v e H i g h T r i p s
P u ll u p r e s i s t o r s
= A c t i v e lo w T r i p s
L C D
c o n t r a s t
D M S 3 0 0 0
J P 6
J P 1
V O L U M E
B A S S
T R E B L E
A U X
