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<document xmlns="http://cnx.rice.edu/cnxml" xmlns:md="http://cnx.rice.edu/mdml/0.4" xmlns:bib="http://bibtexml.sf.net/" id="id36886726">
<name>Exercise:  Instrumenting Simulated Circuits in National Instruments Multisim</name>
<metadata>
  <md:version>1.1</md:version>
  <md:created>2006/07/28 14:37:01.461 GMT-5</md:created>
  <md:revised>2006/08/03 11:46:26.075 GMT-5</md:revised>
  <md:authorlist>
      <md:author id="Janell">
      <md:firstname>Janell</md:firstname>
      
      <md:surname>Rodriguez</md:surname>
      <md:email>janellrodriguez@hotmail.com</md:email>
    </md:author>
      <md:author id="eluther">
      <md:firstname>Erik</md:firstname>
      <md:othername>B</md:othername>
      <md:surname>Luther</md:surname>
      <md:email>erik.luther@ni.com</md:email>
    </md:author>
  </md:authorlist>

  <md:maintainerlist>
    <md:maintainer id="Janell">
      <md:firstname>Janell</md:firstname>
      
      <md:surname>Rodriguez</md:surname>
      <md:email>janellrodriguez@hotmail.com</md:email>
    </md:maintainer>
    <md:maintainer id="eluther">
      <md:firstname>Erik</md:firstname>
      <md:othername>B</md:othername>
      <md:surname>Luther</md:surname>
      <md:email>erik.luther@ni.com</md:email>
    </md:maintainer>
  </md:maintainerlist>
  
  

  <md:abstract>This module provides an exercise with step by step instructions for instrumenting simulated circuits in National Instruments Multisim.  Multisim is fully featured SPICE schematic capture and simulation tool used for circuit design, simulation, and in combination with Ultiboard for layout of custom PCBs.</md:abstract>
</metadata>
<content>
<section id="id36918837">
<name>Approximate time to complete: 20 minutes</name>
<para id="id35635848">This exercise will demonstrate the
interactive simulator, and virtual instruments. By the end of this
exercise, users will be familiar with placing instruments, opening
their front panels, and configuring various options.</para>
</section>
<section id="id36939683">
<name>Objectives</name>
<list type="bulleted" id="id28957092">
<item>Learn how to place and connect virtual instruments.</item>
<item>Gain experience configuring instruments.</item>
</list>
</section>
<section id="id36814844">
<name>Procedure</name>
<list type="enumerated" id="id36474193"><item>Load circuit <link src="40kFilter2.ms9"> 40kFilter2.ms9 </link>
.  Refer to while performing steps 2
- 4.</item>
<item>Replace the Clock Source with a Function Generator. Once
placed, double-click to open the instrument panel and adjust its
settings as follows:</item>
</list>
<list type="bulleted" id="id36893944">
<item>Waveform = sinewave</item>
<item>Amplitude = 1 V</item>
<item>Frequency = 40 kHz</item>
</list>
<list type="enumerated" id="id17433973">
<item>Close the instrument panel.</item>
<item>Attach the Bode plotter between the input and output nodes.
Double-click to open the instrument and adjust its settings as
follows, then simulate and observe the output:</item>
</list>
<list type="bulleted" id="id36944319">
<item>Set Magnitude</item>
<item>Horizontal I (Initial) = 1 kHz, F (Final) = 1 MHz</item>
<item>Vertical I (Initial) = -50 dB, F (Final) = 10 dB</item>
</list>
<list type="enumerated" id="id35406678">
<item>Attach an oscilloscope to monitor the input and output
voltages.Double-click on the oscilloscope icon to adjust its
settings as follows:</item>
</list>
<list type="bulleted" id="id35432383">
<item>Set Timebase = 20 us/Div</item>
<item>Channel A= 1 V/Div</item>
<item>Channel B = 1 V/Div</item>
</list>
<list type="enumerated" id="id32282683">
<item>The color of the wire segment connected to an instrument
controls the color of the trace on the instrument display. Make
sure that the wires from the output of the op-amp are blue. If they
are not, then right-click on a wire segment and choose “Wire Color”
to change the setting. Now, simulate and observe the output.</item>
<item>Change the value of the Potentiometer (R3) by pressing “A” to
increase the resistance and “Shift-A” to decrease the resistance
during simulation. Observe the response on the oscilloscope. Note:
The Bode Plot response will be updated only after you re-simulate
the circuit.</item>
</list>
<figure id="id36693808">
<media type="image/png" src="Graphic1.png"/>
</figure>
<list type="enumerated" id="id36918396">
<item>While the simulation is still running, use the “Measurement
Probe” to view the voltage levels in the circuit. It is found at
the end of the instrument panel.</item>
</list><code type="block"><link src="40kFilter2_Complete.ms9"> SOLUTION </link>
</code>
</section>
</content>
</document>
