PNA-X IMD应用程序的源到音分配

您好，我正在使用带有内部两个源，组合器的双端口N5242A PNA-X，带选项-087（IMD应用程序）。
我一直在尝试使用IMD应用来测量IP2并在扫描功率干扰信号的情况下获得灵敏度。
例如，假设我在2.45 GHz处有所需的音调，干扰音调为5.5 GHz。
我希望在固定引脚= -30 dBm时保持2.45 GHz，同时将5.5 GHz干扰功率从-20 dBm扫描到+10 dBm。
与此同时，我将测量IIP2Hi，IIP2Lo，2.45 GHz的ToneGainLo和5.5 GHz的ToneGainHi。
我遇到的问题是，为了达到我想要的干扰功率扫描范围，我需要使用Source 1作为我的干扰源（因为合成器丢失使得Source 2无法达到我想要的最大干扰功率）。
在IMD应用程序设置中我发现f1在IMD应用程序中，有没有办法让Src 1（具有更高可用端口功率的那个）成为我更高的频率音调而Src 2是我的低频率音调？
我希望能够执行此测试，而无需重新配置测试装置以包含外部放大器。
谢谢



     以下为原文

  Hello,
I'm using a two port N5242A PNA-X with the internal two sources, combiner, with option -087 (the IMD application).
I've been trying to use the IMD app to measure IP2 and gain desense in the presence of a swept power jamming signal.
For example, let's say I have a desired tone at 2.45 GHz and a jamming tone is at 5.5 GHz.
I want to hold 2.45 GHz at fixed Pin=-30 dBm while sweeping the 5.5 GHz jammer power from -20 dBm through +10 dBm.
At the same time I would measure IIP2Hi, IIP2Lo, the ToneGainLo at 2.45 GHz, and the ToneGainHi at 5.5 GHz.  
The problem I'm having is that, in order to achieve my desired jammer power sweep range, I need to use Source 1 as my jammer source (because the combiner loss makes Source 2 not able to reach my desired max jammer power).
In the IMD app setup I find that f1 In the IMD application, is there any way to make Src 1 (the one having higher available port power) be my higher freq tone and Src 2 be my lower freq tone?   
I'd like to be able to perform this test without needing to reconfigure the test set to include an external amplifier.  

Thanks