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: See below for the layout of the VIA motherboard and the Matrix Orbital LCD. VIA Motherboard LCD for Alert information Internal Speaker Status LED’s: System and Alert Status IDE Hard Drive Optional PCI Card RAM module On Board Ports – Serial,Audio,etc

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 Battery 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

* 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 +7 to +15 VDC Pin2 I2C SCL clock Pin3 I2C SDA data 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 Pin3 Data to LCD 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