How to use the multisim oscilloscope and an introduction to basic buttons

Multisim is a Windows-based simulation tool launched by National Instruments (NI) Co., Ltd., which is suitable for board-level analog/digital circuit board design. It includes graphical input of circuit schematics and circuit hardware description language input methods, and has rich simulation analysis capabilities.

Engineers can use MulTIsim to interactively build circuit schematics and simulate circuits. MulTIsim refines the complex content of SPICE simulation so that engineers can quickly capture, simulate and analyze new designs without having to understand in-depth SPICE technology, which also makes it more suitable for electronics education. Through MulTIsim and virtual instrument technology, PCB design engineers and electronics educators can complete a complete integrated design process from theory to schematic capture and simulation to prototype design and testing.

This article introduces the usage and basic buttons of the multisim oscilloscope.

How to use multisim oscilloscope

1. Find the oscilloscope: The first instrument in the instrument column on the right side of the workspace is a multimeter, the fourth one is an oscilloscope, and the fifth one is a four-trace oscilloscope;

2. Connect to the circuit: The oscilloscope has two channels, which can observe two signals at the same time. For example, if we want to see the voltage change across a resistor, we can connect the A channel of the oscilloscope in parallel with the resistor; if we also want to see the voltage change across a capacitor, we can connect the capacitor in parallel to the B channel.

3. When the circuit diagram is very complicated, the signals of each channel may look messy. We can set the colors of different signal channels. For example, select the wire connected to the positive pole of oscilloscope channel B, right-click, and then select the color segment to select a desired color.

4. After setting up, we start to simulate and observe the signal. Turn on the simulation switch and double-click on the oscilloscope you placed to open the display panel. As shown in the figure:

5. Set the parameters below the signal display window according to the question information: if you want to observe the AC signal, select AC; if you want to observe the DC signal, select DC; if you do not want to observe the signal of this channel temporarily, select 0. There is also an inverting switch under channel B, which is the opposite of the original value; there are two trigger modes: edge and level. If it is edge triggering, you must also select the rising edge and the falling edge; at the same time, adjust the ratio of the time axis, the ratio of channel A, and the ratio of channel B to enlarge or reduce the time and signal amplitude for easy observation.

Introduction to the basic buttons of multisim oscilloscope

The large box above shows the specific values ​​of time, channel A and channel B.

【Timebase】refers to the horizontal axis, and scale refers to the time size represented by one grid on the horizontal axis;

【Cnannel A】is the waveform of channel A; scale is the voltage represented by one grid on the vertical axis;

[Cnannel B] displays the waveform of channel B; scale is the voltage represented by one grid on the vertical axis; because this is a dual-trace oscilloscope, it can display the waveforms of two channels at the same time.

【Reverse】means to reverse the selection, that is, when you click this button, the oscilloscope display will change to a white background and black waveform lines; it is suitable for printing.