Agilent E4440A扫描点数会影响测量吗？

嗨 - PSA有一个全数字IF，采样率为30 Msamples / s。
例如，如果您的扫描时间是1秒，扫描/跟踪点是601，那么每个跟踪点桶有30个Msamples /（扫描点-1）样本，相当于50,000个样本。
如果将扫描点增加到8001，则每个跟踪点桶为30E6 / 8000个样本，即3,750个样本。
如果您的检测器是峰值检测器，那么在每个跟踪点桶中的所有样品中，分析仪将保留最高样品并使用它来表示跟踪点。
因此，正如您所看到的那样，除了可忽略的时间之外，除了可以忽略的时间之外，分析仪在显示器上绘制额外的点之外没有时间惩罚。
但是，当您增加扫描点时，每个扫描点都会在较少的样本上进行测量，因此您将看到点的幅度变化更大。
问候 -



     以下为原文

  Hi -

The PSA has an all-digital IF that samples at 30 Msamples/s.  If for instance your sweep time is 1 second and your sweep/trace points are 601, then each trace point bucket has 30 Msamples/(sweep points – 1) samples, which equals 50,000 samples.  If you increase your sweep points to 8001, then each trace point bucket is 30E6/8000 samples, which is 3,750 samples.  If your detector is peak detector, then out of all of the samples in each trace point bucket, the analyzer will keep the highest sample and use this to represent the trace point.  So, as you can see there is no time penalty for having more sweep points other than the negligible time it additionally takes the analyzer to paint additional points on the display.  However, as you increase the sweep points, each sweep point is measured over fewer samples, so you will see more variability in amplitude of points.

Regards -

嗨，tabbott，非常感谢您的详细解释。
它确实帮了很多忙！
BR，伊柳



     以下为原文

  Hi, tabbott,

thank you very much for your detailed explanation.
It really helped a lot!

BR,
Yiliu