E4407B频谱分析仪和E7405A EMC分析仪之间的差异？

它们基本上是相同的硬件，E7405A标配了一些E4407B选项（窄分辨率带宽，RF前置放大器，准峰值检测器等）。
它们也具有相同的核心固件，但E7405A安装了EMC Analyzer人员，而不是Power Suite测量。
仪器固件根据存储器中保存的型号来决定它们的行为方式。
您可以将E7405A用作基本频谱分析仪，但是您需要将分辨率带宽耦合设置为SA而不是默认EMI，以便它们耦合到跨度而不是频率。
此外，使用E7405A，您无法安装E4407B中可以使用的任何其他可选测量特性，也无法在E4407B中获得EMC Analyzer的个性化特性。
我们还有以下常见问题解答：http：//www.home.agilent.com/agilent/editorial.jspx？cc = US＆amp; cs = eng＆amp; ckey = 401800＆amp; nid = -35261.536880469＆amp; id = 401800我希望这有助于
，迈克



     以下为原文

  They are basically the same hardware, with the E7405A having a few of the E4407B options as standard (Narrow Resolution Bandwidths, RF Preamplifier, Quasi-Peak Detector, etc..). They also have the same core firmware, but the E7405A has the EMC Analyzer personlity installed instead of the Power Suite measurements. The instrument firmware makes decisions based on the model number saved in memory as to how will them behave.

You can use the E7405A as a basic spectrum analyzer, but you will want to set the resolution bandwidth coupling to SA instead of the default EMI so that they will couple to the span instead of the frequency. Also, with the E7405A you cannot install any of the other optional measurement personalities that you could in the E4407B, nor can you get the EMC Analyzer personality in the E4407B.

We also have the following FAQ:

http://www.home.agilent.com/agilent/editorial.jspx?cc=US&lc=eng&ckey=401800&nid=-35261.536880469&id=401800

I hope this helps,
Mike

感谢您的详细回复。
这听起来像是E4407B的方式，以及安装的正确选项。
我假设没有办法强制在E7405A上安装E4407B固件，将其变成更通用的频谱分析仪？
此外，如果我要使用E4407B w / AYQ进行预兼容测试，我们仍然应该能够通过手动检查光谱（或通过PC上的数据和软件的GPIB下载）来确保
它低于监管水平？
或者是否无法在E4407B上获得正确的带宽/滤波器窗口/峰值检测功能来正确执行此操作？



     以下为原文

  Thanks for the detailed response. It sounds like the E4407B is the way to go then, along with the right options installed. I assume there is no way to force the installation of the E4407B firmware on the E7405A to turn it into a more general-purpose spectrum analyzer? Also, if I were to get a E4407B w/AYQ to do pre-compliance testing, we still should be able to do this by manually inspecting the spectra (or via a GPIB download of the data and software on a PC) to make sure it is below regulatory levels? Or is it not possible to get right bandwidth / filter window / peak detection functionality on the E4407B to do this correctly?

虽然您可以“强制”将错误的软件安装到其中一个仪器中，但对于任何一种情况都不会表现正常，因为仪器将根据您无法更改的型号做出决策。
您当然可以将E4407B与选件AYQ配合使用，并具有相同的探测器和带宽（如果需要，您还需要选择1DR用于200 Hz RBW）。
有许多只是在频谱分析仪模式下使用E4407B进行所有扫描，然后在零扫宽的峰值上使用EMI检测器进行测量。
麦克风



     以下为原文

  While you could "force" the installation of the wrong software into one of these instruments it would not behave properly for either condition since the instrument will make decisions based on the model number, which you are not able to change.

You could certainly use the E4407B with option AYQ and have the same detectors and bandwidths (you will also need option 1DR for the 200 Hz RBW if you need it). There are many that just use the E4407B in spectrum analyzer mode to do all of their scans and then just use the EMI detector on the peaks in zero span to make their measurements.

Mike

Colby，你有正确的分析仪进行预合规性测试，为什么你会降级？
E7405具有内置于设备中的所有标准文件，具有测量特性。
通过选择标准，您必须遵守该单元将自己配置为该标准，甚至显示通过/失败的限制线。
戴夫



     以下为原文

  Colby,

You have the correct analyzer for pre-compliance testing, why would you down grade?   The E7405 has all of the standards files built into the unit with the measurement personality.   By selecting the standard you have to comply to the unit will configure itself to that standard and even display limit lines for pass/ fail.

Dave

此时我们没有或拥有任何一个单位。
我们的预算有限，因此我希望得到一种可以使用最多数量的仪器，即使在我们将其用于EMC预兼容性测试时设置起来有点困难。
实际上我很难找到比E4470B更好用的E7405，价格也不错，所以如果我永远无法获得它，那么它可能是一个静音点。



     以下为原文

  We don't have or own either unit at this point. Our budget is somewhat limited, so I was wanting to get one instrument that I could do the maximum number of things with, even if it is a little more difficult to set up for when we are using it for EMC pre-compliance testing. I'm actually having more trouble finding used E7405As than E4470Bs at good prices, so it might be a mute point anyway if I could never obtain one.