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DSATX Manual 

Copyright 2006 Mpegbox.com

 

  Page 1 of 13 

 

 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 Contents for DuraWatt DSATX 220

Page 1: ...t 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 purchas...

Page 2: ...ction J5 J2 J8 DC DC Power Supply 5VSB 5V 3 3V 12V PSON 12V Adjust POTs JP1 ATX 20p 12V FAN Chassis Ground GND 12 Volts In VIN Accessory In ACC Status LED MotherBoard Switch Advanced Options Communication Port Requires RS 232 or USB Translator Control Monitoring PWROK 1 4 Included Contents and Optional Accessories Included 1 DSATX 220 Watt Power Supply 1 9 20 pin ATX Power Cable with 2 HDD Power C...

Page 3: ...MB Power Switch Computer Motherboard Hard Drive CD ROM etc 2 4 Precautions and Warnings Operating a personal computer in a motor vehicle can be dangerous Improper use or negligence can result in damage and or loss of life to self and others Safety precautions must be considered when operating a personal computer in a motor vehicle Displays must not be distracting to the driver and should not displ...

Page 4: ...odes field upgrades and diagnostics Note Do Not Over Turn P1 and P2 only 270 degrees is available 2 6 Bench Testing The DSATX can be tested in the lab before being installed into the vehicle Certain details need to be noted for proper bench testing When connecting bench power use between 12 to 16 volts DC to Vin and Gnd terminals for best results Small jumper wires may be sufficient to turn on the...

Page 5: ... to have the ability to go to the gas station and have the computer still running while you pump and pay so when you come back you don t have to wait a boot up When you get home you don t want a dead battery This power supply is the only one on the market that allows you to do all these things and have full control of the settings The following example will illustrate some of the features of Basic...

Page 6: ...ate computer is on 1 blinks Main Countdown Timer 2 blinks Power Down after shutdown pulse is sent 3 blinks N A 4 blinks Over or Under Temperature Condition Are you using a fan 5 blinks Power Supply Overload or Fault ACC must go low to clear a fault 3 4 Basic Mode Timing Diagram Accessory J5 Engine Running 5V Standby MB Power Switch JP1 Computer On t2 t3 t1 User Switch JP1 Sleep Running Count Down ...

Page 7: ... fail for any reason When rails are shorted for example 5 volts to 12 volts other power supplies on the market will not detect an over voltage condition which will damage 5 volt rated computer components 3 5 6 Output Current Limiting The output rails of the DSATX are designed to current limit such that they will begin to sag before the components are overloaded beyond their manufacturer rating in ...

Page 8: ...ke HyperTerminal or TeraTerm are examples of applications that can be used to interface with the DSATX s Extended Basic and Advanced Modes The USB adapter creates a virtual COMM Port 4 3 Basic Programming Control The DSATX responds to the following commands over the serial interface Case Sensitive E Enable Writing Parameters Allows the below commands to work P Enter Program Mode D Load Factory Def...

Page 9: ...s you can set with the P1 Pot Basically if you set the pot half way and had Maxtimer1 set to 1200 it would shutdown in 600 seconds If you set the Maxtimer1 to 0060 you would have between 0 and 60 seconds to select with the P1 Pot You must type 4 numbers Ex 0123 E ß Type the letter E Enable Writing y n y ß Type the letter y P ß Type the letter P PROGRAM MODE Use POTs y n y ß Type the letter y MAXTI...

Page 10: ...ld Y ENABLESLEEP 13 1 1 yes 0 no If set Unit Will go use Sleep Mode ACC High for Wake Up FEEDON 14 1 1 yes 0 no If set Serial Port Diagnostic Status Feed is Enabled VTURNON 15 0 1 yes 0 no If set Mb Switch Press occurs after Vin is above VINHIGHTHRESH Y ACCTIMEVAL 16 0050 10ms Settling time for the ACC input Debouncing time TEMPHIGH 17 0550 0 1 deg C Maximum Operating Temperature TEMPLOW 18 0100 0...

Page 11: ...C Input Threshold Low 4V High 7V 30V Max ACC Input Impedance 100k Ohms MB Power Switch Output Drive Open Collector 50mA Max AUX Output Drive Open Collector 50mA Max User Switch Pull Up Drive 10k Ohms to 5V Serial Port Rx Tx Low 0 7V High 2V 5V Max Supervisor Specifications Basic Mode P1 Countdown Timer Range 0 20 minutes 10 minutes default P2 Low Voltage Cutout Range 10 12 volts 11 volts default O...

Page 12: ... 5V GND 3 3V 3 3V 5V 5V N A GND GND GND GND 12V PSON J8 ATX12V J7 ATX PWR ACC VIN GND J5 INPUT PWR 12 N C GND GND TX OUT 5VD RX IN J1 FAN J2 COMM RESET GND GND GND GND GND GND G MB_SW F AUX_SW E SL_SEN D USER_SW C USER1 B USER0 A 5VD JP1 3 3V P1 P2 POTS More Time Higher Voltage P1 P2 F1 Fuse 20 Amp Mini Auto D8 LED GND ...

Page 13: ... other consumable parts transportation costs or any damage incurred in transit This warranty will become void if the serial number identification has be wholly or partially removed or altered Repair ore replacement under the terms and conditions of this warranty does not extent the term of this warranty Any modification of the temperature control system parameters or modifications to the mechanica...

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