使用ADS中的MSK_Mod和FM_Mod模型进行包络模拟无法获得任何输出

大家好，我正在尝试在ADS中使用捆绑的MSK_Mod和FM_Mod模型（在定时调制解调器调色板下）进行一些包络模拟。
作为一个起点，我只是建立一个非常简单的电路来验证模型产生的输出是否符合预期。
但是，似乎我根本无法获得任何输出。
我附上了测试设置原理图。
对于FM_Mod模型，它是一个非常简单的模型，具有单个输入和单个输出，但我仍然无法获得任何输出，我的测试设置似乎缺少或根本错误但我没有
能够搞清楚。
MSK_Mod模型也会出现类似的情况（请参阅附带的测试示意图）。
任何想法，建议或更正都表示赞赏，谢谢！
MSK_Mod_setup.png77.7 KB



     以下为原文

  Hello everyone,

I'm trying to use the bundled MSK_Mod and FM_Mod models (under the timed Modem palette) in ADS for some envelope simulations. As a starting point, I just set up a very simple circuit to verify that the output generated by the models are as expected. However, it seems I'm unable to get any output at all. I've attached the test setup schematics.

For the FM_Mod model, it is a very simple model with a single input and a single output, but I'm still unable to get any output, there seems to be something missing or fundamentally wrong with my test setup but I've not been able to figure it out.

A similar case occurs with the MSK_Mod model (please refer to the attached test schematics).

Any ideas, suggestions or corrections are appreciated, thanks!   
附件

• FM_Mod_setup.png84.2 KB
• MSK_Mod_setup.png77.7 KB