Analog Devices AN628 Application Notes

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APPLICATION NOTE

One Technology Way • P.O. Box 9106 • Norwood, MA 02062-9106 • Tel: [phone] • Fax: [phone] • www.analog.com

ADN2850 Evaluation Kit User Manual

By Alan Li

7 STEPS TO EVALUATION KIT SETUP

The ADN2850 evaluation kit (EVAL-ADN2850-25) con­sists of a demonstration board and software for
evaluating the ADN2850. It is a user-friendly tool that

1.

INSTALL THE ADN2850 SOFTWARE

2. INSTALL THE DRIVER

3. CONNECT THE PARALLEL
PORT CABLE

4. CONFIGURE THE
EVALUATION BOARD

you can control with your personal computer through
the printer port. The driving program is self-contained,
so no programming languages or skills are needed.
Figure 1 provides an overview of how to set up the kit.

6. OPEN THE ADN2850 SOFTWARE AND
PROGRAM THE RESISTANCE SETTINGS

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+5V

5. APPLY THE POWER SUPPLY

GND

Figure 1. Evaluation Kit Setup

W1

B1

7. MEASURE THE RESULT

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SETTING UP THE ADN2850 EVALUATION BOARD

Step 1—Installing the ADN2850 Software

To install the ADN2850 software from the Revision G
CD, run setup.exe under D:\ADN2850 Evaluation Soft­ware Package. During the installation, select Ignore or
Yes to bypass error messages if they occur. You may
need to install the software a few times to get a success­ful installation.

Step 2—Installing the Driver for PC Parallel Port Communications

In addition to installing the ADN2850 software, you need
to install a third-party driver, NTPORT from Upper
Canada Technologies (UCT), for access to the PC parallel
port. UCT offers a free trial with a nominal license fee
after 30 days.

1. Download the driver from www.uct.on.ca. From the
UCT website, download NTPORT.OCX. Save
ntport.zip in the default or specified directory. Unzip
and extract all the files to the directory.

2. Run setup.exe. If the setup procedure indicates
file violations during installation, select Ignore to
bypass them.

3. Ensure that the driver file, dlportio.sys, is in the
correct system directory.

Note: If Windows® displays an error message, such as
“Can’t connect to service control manager,” contact the
IS department for authority to continue installation.

b.Change the pathname of the driver according to

the operating system.

• On a Windows 2000 or Window NT

enter c:\winnt\system32\drivers\dlportio.sys.

®

system,

• On a Windows XP system, enter

c:\windows\system32\drivers\dlportio.sys.

c. Click the Install button, then the Start button. If

the status message indicates success, the driver is
installed and operating. Click OK.

4. Set up the driver for automatic startup. Use the
following steps that apply to your operating system.

For Windows 2000 and XP Systems

a. Go to the Device Manager.

• On a Windows 2000 system, click

Start → Settings → Control Panel → System →
Hardware → Device Manager.

• On a Windows XP system, click

Start → Control Panel → System → Hardware →
Device Manager.

a. Run loaddrv.exe under c:\program files\project1

or the specified directory. A dialog box appears.

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b.Locate Non-Plug and Play Drivers and dlportio in the Device Manager.

If the Non-Plug and Play Drivers entry is not visible, click the View menu in Device Manager and select Show

Hidden Devices to make sure that hidden driver files are listed. If you do not see dlportio, reboot Windows, or rerun
loaddrv.exe and then reboot Windows.

c. Double-click dlportio in the Non-Plug and Play Drivers list. The dlportio Properties page appears.

d.At the Driver tab, select Startup Type as Automatic, click Current status to Start, and click OK.

Note: If Startup is not active and you cannot change Type, your computer may be administered by your IS department.
You may need to consult them to change your PC administrative setting.

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For Windows NT Systems

a. From the Windows NT Control Panel, select the

Devices icon. The Devices dialog box appears.

b.Select dlportio and click the Startup button. The

device Startup Type dialog box appears. From the
option buttons, select Automatic, and then click OK.

• For dual supplies, connect JP15 and JP12 to connect

the –5V pin to V

of U1 and U3.

SS

Warning: Apply +2.5 V to Pin +5V and –2.5 V to
Pin –5V instead.

• Select the states of PR and WP from the DIP switches

on the evaluation board.

• SDO can be monitored at TPSDO.

Step 5—Applying the Power Supply

Provide a power supply to the ADN2850 evaluation
board according to Step 4 for a single supply or for
dual supplies.

Step 6—Using the Evaluation Board

To open the ADN2850 software program, from Windows
click Start → Programs → ADN2850 Rev G.

Figure 2 shows the graphical interface. In the Direct Con­trol pane, on the right, you can move the scroll bars or
click the buttons to control the device. In the top pane,
you can adjust the bit pattern and then click Run to pro­gram the device. In the bottom pane, you can
approximate R
R

after power is applied.

AB

and RWB by first entering the measured

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Step 7—Measuring the Result

Use a multimeter to measure the result of your program
applications on the ADN2850 evaluation board.

Step 3—Connecting the Parallel Port Cable

Connect the parallel port cable from LPT1 on your PC to
the ADN2850 evaluation board.

Step 4—Configuring the Evaluation Board

Follow these requirements to configure the ADN2850
evaluation board:

• For a single supply, connect JP14 and JP13 to

ground V

of U1 and U3. Apply 5 V to Pin +5V.

SS

Note: Some boards do not come with jumper
caps. You should supply suitable caps or simply
short the jumpers for proper operation.

UNINSTALLING SOFTWARE

To uninstall the ADN2850 software and NTPORT driver,
use Add/Remove Programs in the Control Panel.

TECHNICAL SUPPORT

Due to the variations in computer platforms and con­figurations, Analog Devices, Inc., cannot guarantee the
software described in this application note to work on all
systems. If you encounter problems, send email to
[e-mail] or call 1-408-382-3082 for
applications support. If you are interested in the
ADN2850 source code, send email to [e-mail]
for more information.

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Figure 2. ADN2850 Software Graphical Interface

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