Digital Alert Systems DASDEC-1EN Quick start guide

DASDEC-1EN Schematics
July 14, 2004
The DASDEC-1EN ES Encoder/Decoder is constructed from commercially available PC
platform hardware. The DASDEC software can run upon a wide variety of hardware. The
specific hardware chosen for the DASDEC-1EN was based on specific features and price.
The VIA EPIA-M motherboard was chosen. This is of course the heart of the system.
Other important parts include an 2x20 character LCD display, IDE hard drive or flash
drive, RAM memory, an optional sound card, 2 status LED’s, and a simple speaker. The
chosen LCD is the LK202-25 from Matrix Orbital. The DASDEC-1EN is controlled via a
LAN and/or external Serial Port and/or by Keyboard/Mouse/VGA monitor display . It
displays state via the LCD and also via a VGA monitor.
Here is a diagram of the overall schematics of the DASDEC-1EN, which is in essence,
a personal computer equipped with an LCD:
See below for the layout of the VIA motherboard and the Matrix Orbital LCD.
VIA Motherboard
LCD for Alert information
Internal
S
p
eake
r
Status LED’s:
System and
Alert Status
IDE Hard Drive
Optional PCI Card
RAM module
On Board Ports – Serial,Audio,etc

DASDEC oriented VIA motherboard schematic & layout
Important Connector Pinouts:
For more details refer to VIA Users Manual for EPIA-M series.
Other VIA Chipset
components
DIMM
256MB
MEM
VIA
Eden
Or
C3
CPU
ATXPWR – from Power
Supply. To Hard Drive
and LCD
IDE1 –
To Hard
Drive
IDE2
PCI – Riser card to horizontal PCI Card
Floppy
Disk-
Unused
CMOS
Batter
y
COM2 to
LCD
USB ¾ to Ext
Ports
Power on,
Connector to Speaker
Standard PC Pinout
IEEE1394 ½ to Ext Ports
IEEE
1394
Ports
1/2
USB
Ports
3/4
Top: RJ45 to LAN
Bottom: USB Ports 1/2
VGA Out
Top: PS/2 Mouse
Bottom: PS/2 Keyboard
Audio Block:
Blue: Audio Line-In
Green: Audio Line-Out
Pink: Audio Mic-In
Top: Parallel Port
Bottom: Left: S-Video
Middle: RCA/SPDIF
Right: COM1 Serial for
External Device control
Pin 1
COM2 Serial Port
Pin 9
Pin 2
Pin 1
Power On, Speaker
Pin 15
Pin 2
Pin 6: Power On+ Pin 7: Speaker+
Pin 8:Power On- Pin 13: Speaker -
Upper Deck
Port Block

Matrix Orbital LK202-25 LCD schematic:
* Connector Function *
General Purpose Outputs 2 Status LEDs, optional GPO relay control
GPO1 Green LED System status
GPO2 Red LED EAS Alert status
GPO3-6 available for external GPO relay control
4 pin power LCD power ( 5.0VDC), unused I2C comm.
Pin1+7to+15VDC
Pin2 I2C SCL clock
Pin3I2CSDAdata
Pin4 Ground
10 pin keypad header generate 25 key states-optional GPI input
DB-9F RS-232 connection to VIA motherboard COM2 serial port
Pin2 Data from LCD
Pin3DatatoLCD
For more details refer to Matrix Orbital Users Manual for LK202-25.
Power
Connector
RS-232
10 pin keypad
header
General
Purpose
outputs Pin 1 Pin 4
Pin 5 Pin 1
GPO 1
GPO 6
©Digital Alert Systems, LLC 2004