User manual

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DuraWatt DSATX

220-Watt DC-DC ATX Power Supply

User Manual

Version 1.0

Table of Contents

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

Summary of content (13 pages)

PAGE 1
DuraWatt DSATX 220-Watt DC-DC ATX Power Supply User Manual Version 1.0 Table of Contents 1. Getting Started ............................................................................................................................................1 1.1. Introduction .................................................................................................................................................1 1.2. Product Photo ...........................................................................
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Battery Protection, and Temperature Protection. Features also include Serial Port Control, Diagnostics, and Upgradeability. Desktop computer motherboards are typically not designed to work in automotive environments, the design and engineering that went into the 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. 1.2. Product Photo 1.3.
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2. Installation Guide 2.1. • • • • • • Recommended Additional Supplies 12 AWG Hookup Wire for Vin and Gnd Inputs (Minimum Recommended Gauge) 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.
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2.5.
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Using the 12 volt output of an ATX AC-DC power supply is also a method for successful bench testing. By shorting the Green Wire (PS_ON) of an ATX AC-DC power supply can provide the required current for certain bench testing applications. Make sure minimum load requirements (on the AC-DC power supply) are met if going this route. 2.7. • • • • • • • • Quick Installation Steps Connect GND, and VIN with heavy gauge wire directly to the automotive batteries + and - terminals.
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Extended Basic Mode: This mode requires a Serial Port Adapter (see optional accessories above) to use. This mode is entered by typing an ‘E’ Character to enable the writing of parameters then a ‘P’ for Programming extended basic features.
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The DSATX is constantly monitoring the input voltage at the VIN terminal to make sure the conditions are right to be operating a computer motherboard in the vehicle. The DSATX will not initially turn on unless the voltage is above the value set by the P1 (or the serial adapter). Once the computer is up and running, the DSATX can survive engine cranking for up to 10 seconds.
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4. Serial Port Connectivity 4.1. Serial Port Adapters The DSATX was developed to be used with the serial hardware interface standard developed in the Robotics Industry by Acroname Inc. The DSATX is compatible with both the USB Serial Adapter and the RS-232 Serial Adapter. • RS-232 DB-9 Adapter - PN: S13-SERIAL-INT-CONN • USB B-Type Adapter - PN: S19-USB-SERIAL-INT-CONN 4.2. Serial Port Overview DSATX Location J2 has a 4-pin header that matches the connection diagram on the above adapter drawings.
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last setting so if the Feed is turned off and then power is removed from VIN, the next time it powers up the Feed will be still be off. The Diagnostic Feed takes this format: +030.3:12.56:12.00:05.19:03.34:10.49:0560:YNYY:3:0558 A : B : C : D : E : F : G : H :I: J A: B: C: D: E: F: G: H: I: Ambient Temperature in Degrees C Input Voltage at VIN 12-Volt Rail Output 5-Volt Rail Output 3.
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4.6. Advanced Features For some users enough is never enough. The DSATX has the ability to fine tune many of the parameters that control its behavior. 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. Ex: >S011130 ß Set parameter 1 (LOWVOLTS) to 11.
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5. Specifications 5.1. Electrical Electrical Specifications: Input Voltage (Operating) Input Voltage (Full Load) Input Current Output Power No Load Operating Current Sleep Current (All Rails Off) Efficiency 6-24 Volts Non-Regulated 8-16 Volts Non-Regulated 20A (20A mini-blade fuse) 220 Watts Max < 70mA < 4mA > 95% Individual Supply Outputs 5.0 Volts +/- 2% 3.3 Volts +/- 2% 12.0 Volts +/- 2% 5.0 Volts Standby +/- 2% -12.
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5.3. Connector Pin Diagrams J7 ATX PWR +12V +5VSB PWR_OK GND +5V GND +5V GND +3.3V +3.3V J5 INPUT PWR J8 ATX12V ACC GND +12V +VIN GND GND +12V +5V +5V N/A GND GND GND PSON# GND -12V +3.3V JP1 (F) AUX_SW GND (E) SL_SEN GND (D) USER_SW GND (C) USER1 GND (B) USER0 RESET# (A) +5VD P1 & P2 POTS J2 COMM RX(IN) +5VD TX(OUT) GND F1 Fuse P1 P2 DSATX Manual J1 FAN GND GND +12 (G) MB_SW N/C GND D8 LED = More Time = Higher Voltage Copyright 2006 Mpegbox.
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6. Troubleshooting Please visit the www.mpegbox.com support forums for troubleshooting tips. 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 for parts or labor.