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Dallas Semiconductor DS1840K Instructions And Operating

Potentiometer evaluation kit
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Getting Started with the DS1840K . . .
Kit Instructions and Operating Procedures
Description
The DS1840K Potentiometer Evaluation Kit provides the hardware and software necessary to evaluate the
functions and features of the DS1845, DS1846, DS1847, and the DS1848 potentiometers in a laboratory
environment. The user must supply a PC and a 5V power supply terminated with banana plugs (bench
supply or modified "wall wart" transformer) for operation of the kit. The DS1840K also provides an
oscillator/buzzer circuit that allows you to "hear" the potentiometers.
Kit Contents
1.
CD with DS1840K software
2.
Evaluation board
3.
Cable (6-conductor)
4.
Product samples
5.
DS9123 serial port dongle
6.
Documentation (not shown)
If you require a product sample of a device not
supplied in this kit, please contact the factory or
your local sales representative for availability.
Contact information can be found at the end of
this document.
Getting Started with the DS1840K . . .
Figure 1. DS1840K Kit Contents
1 of 13
010801

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Summary of Contents for Dallas Semiconductor DS1840K

  • Page 1 The user must supply a PC and a 5V power supply terminated with banana plugs (bench supply or modified “wall wart” transformer) for operation of the kit. The DS1840K also provides an oscillator/buzzer circuit that allows you to “hear” the potentiometers.

  • Page 2: Setting Up The Hardware

    Getting Started with the DS1840K . . . Setting up the Hardware Choose a device to evaluate. The DS1840K comes standard with several product samples. Choose the one that you would like to evaluate first. Look for the socket U1 (or U2 if you are evaluating the DS1846) on the DS1840K board.
  • Page 3 To provide the most flexibility, the DS1840K Demo Board allows you to set the address (A0, A1, and A2) using DIP switches (see Figure 3). A DIP switch (A0, A1, A2, and WP) in the “ON”...
  • Page 4 Figure 5. Oscillator circuit. Figure 6. Jumper settings. Once you have configured the jumpers and DIP switches to suit your application, you are ready to run the DS1840K Demo Software. Skip over to Using the DS1840K Software. 4 of 13...
  • Page 5 To provide the most flexibility, the DS1840K Demo Board allows you to set the address (A0, A1, and A2) using DIP switches (see Figure 3 above). A DIP switch (A0, A1, A2, and WP) in the “ON” position grounds the signal. A DIP switch in the “OFF”...
  • Page 6 However, the DS1846, unlike the other featured pots, only provides one address pin, A0. To provide the most flexibility, the DS1840K Demo Board allows you to set A0 using DIP switch 7 (see Figure 3 above). Likewise, a DIP switch is also provided for WP (DIP switch 8).
  • Page 7 Figure 10. DS1840K device selection dialog box. The DS1840K Kit Software finally appears. The first item to look for is the status in the lower left corner. If the DS9123 (connected to the serial port) is found, then the text should read “DS9123 ready!”. LED2 on the board should also be illuminated.
  • Page 8 Getting Started with the DS1840K . . . illuminates when data passes from the software to the demo board. LED1 is disabled by default because it slows down the communication considerably. Property pages that follow behind the General tab will vary depending on which device you are evaluating.
  • Page 9 Getting Started with the DS1840K . . . The “2-Wire” page gives you direct access to 2-Wire communication (see Figure 14). Hopefully, you will never have to use this page. Its main purpose is for debugging. This page also allows you to change the Slave Address.
  • Page 10 Figure 16. DS1847/48 Memory page. Proto Area In order to provide the most flexibility, the DS1840K demo board includes a proto area (see Figure 17). Located in the upper right corner is 20 by 12 grid in which you can add your own circuitry.
  • Page 11 Getting Started with the DS1840K . . . DS1840K Demo Board Schematic Figure 17. DS1840K Demo Board Schematic. 11 of 13...
  • Page 12 Getting Started with the DS1840K . . . Inside the DS9123 Serial Port Dongle Figure 18. DS9123 Schematic. Check our FTP site for more DS9123 information to be added soon. Contact information can be found at the end of this document.

  • Page 13: Contact Information

    Getting Started with the DS1840K . . . Contact Information For questions, comments, or suggestions pertaining to this demo kit, please contact: brian.vasquez@dalsemi.com zack.cox@dalsemi.com , or pots.support@dalsemi.com. World Wide Web Site: www.dalsemi.com Ordering Information: www.dalsemi.com/products/ordering.pdf FTP Site: ftp://ftp.dalsemi.com/pub/system_extension/pots/ Datasheets: www.dalsemi.com/datasheets/pdfindex.html Package/Mechanical Drawings: www.dalsemi.com/datasheets/mechdwg.html...