最近我宣布国家乐器已发布示例实验室集旨在向您展示如何充分利用自己的模拟发现2。如果您从那以后忘记并想查看七个实验室的摘要和任务，则可以查看原始帖子在这里。
Over the next few weeks I’ll be covering each lab, the tools it uses, and concepts that can help you teach your students. In my previous post I went over实验室1：电阻器电路。在这篇文章中，我要去Lab 2: Active and Passive Filters.
Lab 2: Active and Passive Filtersis designed to teach students about the characteristics of active and passive circuits. Students will learn how to build and analyze passive and active filters. The lab goes through the differences in their responses and how they can affect design choices.
该实验室利用两组软件，多义者直播, andWoveforms 2015。Multisim Live是一种基于浏览器的PC软件，可让学生通过平板电脑，智能手机或计算机模拟电路，无论他们身在何处。
Waveforms 2015是驱动驱动的软件模拟发现2。对于该实验室，学生将使用波形生成器提供交流输入，以及示波器和网络分析仪来发现输出。所有这些工具都可以在一个设备上可用于模拟发现2！
For this lab students would need:
- 一个模拟发现2
- Some resistors, capacitors, an opamp, a breadboard, and breadboard wires
- 所有这些都可以在模拟零件套件
- 一个多义者直播Premium account (Free for a limited time!)
- Woveforms 2015（快速免费下载）
Similar to实验室1，实验室2经过理论，仿真和实践分析。
学生将首先阅读有关被动过滤器及其特征的信息，例如截止频率，相移等。
接下来，给学生一个被动过滤器，与上一个实验室相同，并教授如何计算传输函数 - 他们可以从中获得幅度和相位响应。
They are then asked to build the circuit and simulate it. Then, using their knowledge to build a circuit with slightly different values for the characteristics, they are asked to verify it in多义者直播。
To build on the knowledge of transfer functions gained by a simple RC circuit, the lab reviews how to modify that circuit to build higher order filters, and how that changed the transfer function and filter behavior.
Then background on active filters is given, asking the students to go through the same exercises that they went through with passive filters.
接下来，他们开始进行实际练习：
首先，学生可以构建一阶被动过滤器，并使用任意功能发生器模拟发现2提供具有较高和较低频率分量的正弦波。然后，他们可以使用范围来显示低通滤波器如何从信号中去除“噪声”。这证明了过滤器的实际用途之一。
Next, they are asked to build the active filter and measure its frequency response using the Network Analyzer on the Analog Discovery 2. Using the Network Analyzer, they can swap out components and quickly re-plot the frequency response to gain an understanding of how each component affects the circuit behavior.
一个fter the base knowledge is gained, the lab provides a challenge to students: explore the characteristics of specific filters, such as Butterworth and Chebyshev.
他们可以使用多义者直播to build and simulate the circuits, and then use the模拟发现2和波形2015来检查其实际行为。网络分析仪为学生提供了一种快速验证其电路行为的快速方法，并在需要的情况下调整组件以获得更多快速的原型制作体验。
Stay tuned to the blog next week for Lab 3, ordownload and check out the labs yourself。如果您对Woveforms必须提供的工具感兴趣，则可以在其上找到更多信息Wiki页面。
