Digital Alert Systems DASDEC-1EN Schematics

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:
Internal
Speaker
Status LED's:
System and
Alert Status
See below for the layout of the VIA motherboard and the Matrix Orbital LCD.
DASDEC-1EN Schematics
July 14, 2004
On Board Ports – Serial,Audio,etc
RAM module
VIA Motherboard
LCD for Alert information
IDE Hard Drive
Optional PCI Card