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By installing the NI ELVISmx Driver 4.2.3 and above, Multisim users will now have access to a new NI ELVIS instrument, the Bode Analyzer, to analyze their circuit. The NI ELVISmx Bode Analyzer is an instrument that measure the magnitude gain and the phase shift versus the frequency in passive and active linear circuits. It is often used to characterize a filter design by identifying the cuff-off frequencies. With this instrument, students can take the theory they learnt in class, design their own filter, simulate the circuit and then compare the simulated results with a physical implementation on the NI ELVIS workstation. Multisim makes it easy to reinforce theoretical concepts with real-world implementation.
NI ELVISmx Bode Analyzer
The NI ELVISmx Bode Analyzer instrument can be found on the NI ELVIS II Schematic at the top, located by the Oscilloscope and the Dynamic Signal Analyzer instruments as seen in Figure 1.
Figure 1. The icon to launch the Bode Analyzer is located far right.
To use the instrument connect the connect the leads in the following way to your circuit:
- CH 0 + —Positive Stimulus.
- CH 0 - —Negative Stimulus.
- CH 1+ —Positive Response.
- CH 1- —Negative Response
Double-clicking on the icon will launch the virtual instrument's soft front panel. Enter your settings and begin simulation by clicking on the run simulation button from the toolbar. 
Figure 2. NI ELVISmx Bode Analyzer Soft Front Panel
Similar to other NI ELVISmx Virtual Instruments inside Multisim, by changing the Device in the drop-down menu from Simulate NI ELVIS II to a hardware device connected to your computer, for example Dev1 (NI ELVIS II), enables you to take measurements from your hardware device. Using this NI ELVISmx Instrument in Multisim, students would be able to see simulated data and measurements on the same instrument and comment on why sometimes the theory does not match the real-world results.
More Resources
- Download a Free 30-Day Evaluation of NI Multisim
- See What Else is New in NI Multisim 11.0.1 for Educators
- Watch Videos of NI Multisim 11 in Action
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