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DuraWatt DSATX User Manual

220-watt dc-dc atx power supply
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220-Watt DC-DC ATX Power Supply
1.
Getting Started ............................................................................................................................................1
1.1. Introduction .................................................................................................................................................1
1.2.
Product Photo .....................................................................................................................................2
1.3.
Block Diagram.....................................................................................................................................2
1.4.
Included Contents and Optional Accessories ...................................................................................2
2.1.
Recommended Additional Supplies...................................................................................................3
2.2.
Recommended Tools .........................................................................................................................3
2.3.
Connection Overview Diagram ..........................................................................................................3
2.4.
Precautions and Warnings .................................................................................................................3
2.5.
Detailed Connection Diagram ............................................................................................................4
2.6.
Bench Testing .....................................................................................................................................4
2.7.
Quick Installation Steps......................................................................................................................5
3.
User Guide...................................................................................................................................................5
3.1.
Theory of Operation............................................................................................................................5
3.2.
Modes of Operation............................................................................................................................5
3.3.
LED Codes..........................................................................................................................................6
3.4.
Basic Mode Timing Diagram..............................................................................................................6
3.5.
Features Explained.............................................................................................................................6
4.
Serial Port Connectivity.............................................................................................................................8
4.1.
Serial Port Adapters ...........................................................................................................................8
4.2.
Serial Port Overview...........................................................................................................................8
4.3.
Basic Programming Control...............................................................................................................8
4.4.
Diagnostic Feed..................................................................................................................................8
4.5.
Extended Basic Programming Examples..........................................................................................9
4.6.
Advanced Features ..........................................................................................................................10
4.7.
Advanced Feature Tables................................................................................................................10
5.
Specifications............................................................................................................................................11
5.1.
Electrical............................................................................................................................................11
5.2.
Mechanical ........................................................................................................................................11
5.3.
Connector Pin Locations ..................................................................................................................12
7.
Mpegbox.com Limited Warranty ............................................................................................................13

1. Getting Started

1.1.

Introduction

Thank you for purchasing a DSATX 220 Watt Automotive Power Supply. Please take some time to read
through this manual before attempting to use this product.
The DSATX is the most advanced DC-DC Automotive Computer Power Supply available. It is capable of
properly powering most Pentium 4 and AMD based computers in a motor vehicle as well as their accessories.
Its advanced microprocessor control enables features such as Startup/Shutdown Sequencing, Low Voltage
DSATX Manual
DuraWatt DSATX
User Manual
Version 1.0

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Copyright 2006 Mpegbox.com
Page 1 of 13

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Summary of Contents for DuraWatt DSATX

  • Page 1: Table Of Contents

    1.1. Introduction Thank you for purchasing a DSATX 220 Watt Automotive Power Supply. Please take some time to read through this manual before attempting to use this product. The DSATX is the most advanced DC-DC Automotive Computer Power Supply available. It is capable of properly powering most Pentium 4 and AMD based computers in a motor vehicle as well as their accessories.

  • Page 2: Product Photo

    DSATX makes every attempt to compensate for this. Having purchased a DSATX, you will rest assured that you’ve invested in a flexible product that can grow and expand with your automotive computing system.

  • Page 3: Recommended Additional Supplies

    12-24 AWG Hookup Wire for Acc Input (Very little current flows through this wire) • Mounting Screws (4-40 or 6-32) • Mounting Standoffs (Optional) • Power Supply Cooling Fan (or assure adequate airflow over the DSATX) • Custom Enclosure 2.2. Recommended Tools •...

  • Page 4: Detailed Connection Diagram

    Gnd terminals for best results. Small jumper wires may be sufficient to turn on the DSATX alone; however they will most likely not be adequate to run a computer. For the DSATX to turn on successfully, the bench supply must be able to provide 2 amps of inrush current. Under full rated load the DSATX draws around 18 amps @ 12V input.

  • Page 5: Quick Installation Steps

    Theory of Operation The basic idea of the DSATX is this: You want to put a computer in your car, but you don’t want to worry about turning it on and off, you don’t want to worry about the temperature extremes, and you don’t want to worry about the harsh automotive electrical environment.

  • Page 6: Led Codes

    The DSATX knows if the motherboard is on or off and will only send the startup pulse if off and the shutdown pulse if on. This way the DSATX does not get into a weird state where it turns the computer on/off when it wasn’t suppose to due to the user issuing a manual startup/shutdown.
  • Page 7 DSATX. The DSATX is programmed to only allow operation while the temperature is inside the window of -10c to 55c. If outside this range, the LED will flash 4 times and the DSATX will not provide power. Once the out of range condition goes away, the DSATX will behave like ACC was applied right at that point.

  • Page 8: Serial Port Connectivity

    The 5-Volt power comes from the DSATX and is always active even in sleep mode. Be careful not to expose the serial port pins of the DSATX to voltages above 5 volts or short out the pins. Connecting the Serial Port adapter backwards will not damage the DSATX or the adapter, but it will not function and is not recommended.

  • Page 9: Extended Basic Programming Examples

    Extended Basic Programming Examples In the below example, we program the DSATX. Tell it to use the Pots (P1,P2) for the Timer1 (Main Countdown Timer) and the low voltage threshold cutout (P2 selects a value between 10 and 12 volts).

  • Page 10: Advanced Features

    By using Set and Get commands (‘S’ and ‘G’) it is possible to read and write these parameters to the DSATX. To use the Set command, type at the prompt, an ‘S’ followed by 2 numbers for the index, followed by either 4 numbers or 1 number for the value.

  • Page 11: Specifications

    Mechanical Specification Board Dimmensions 4.15"L x 3.5"W x 1.0"H (106x99mm) Mounting hole corridnates (in) (0.2, 0.2) (0.2, 3.3) (3.5, 3.3) (3.5, 0.2) Mounting hole size (in) 0.125 Board Thickness (in) 0.062 Page 11 of 13 DSATX Manual Copyright 2006 Mpegbox.com...

  • Page 12: Connector Pin Locations

    (F) AUX_SW (E) SL_SEN COMM (D) USER_SW (C) USER1 RX(IN) (B) USER0 +5VD TX(OUT) RESET# (A) +5VD P1 & P2 POTS Fuse = More Time 20 Amp Mini-Auto = Higher Voltage Page 12 of 13 DSATX Manual Copyright 2006 Mpegbox.com...

  • Page 13: Mpegbox.com Limited Warranty

    7. Mpegbox.com Limited Warranty The DSATX Power Supply carries a Limited Warranty for the Period of 1 year from the date of purchase. Mpegbox.com warrants its products to be free from defects in workmanship and materials for a period of one (1) year from the date of purchase, Mpegbox.com will repair or replace the unit at our option, without charge...

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