怎么使用Agilent命令Expert从E4404B频谱分析仪手动检索数据

您好，我正在尝试制作一个简单的工具，使用Agilent命令Expert从E4404B频谱分析仪手动检索数据。
我想手动配置我的测量，然后运行脚本将显示器上的数据传输到Excel，而不是设置程序来控制分析器。
我有一些功能，但我需要检索当前显示在设备上的频率开始和停止频率。
我不希望在检索数据之前强迫用户在计算机上输入频率限制。
我能够检索幅度数据和数据点的数量，但是如何检索当前显示在仪表上的迹线的频率信息？
我正在使用IVI-com驱动程序，但使用GPIB命令完成此操作的建议也会有所帮助。
谢谢，克里斯



     以下为原文

  Hello,  

I am attempting to make a simple tool to manually retrieve data from the E4404B Spectrum Analyzer using Agilent command Expert. Instead of setting up a program to control the analyzer, I want to manually configure my measurement and then run a script to transfer the data on the display to Excel.  

I have some functionality, but I need to retrieve the frequency start and stop frequencies currently displayed on the unit. I don't want the user to be forced to enter the frequency limits on the computer before retrieving data.  

I am able to retrieve the amplitude data and the number of data points, but how can I retrieve the frequency information for the trace currently displayed on the meter? I am working with the IVI-com drivers, but suggestions for accomplishing this using GPIB commands would help as well.  

Thanks,  

Chris