最好是将S21轨迹的格式设置为延迟：然后它将显示作为频率函数的群延迟。
不要忘记打开平滑，并使用至少2％，但我会建议5％。
（您可以将格式显示为Logmag，或Phase，或Delay，或VSWR或许多其他内容）。
延迟标记将标记值的组延迟轨迹的值取为标记值，并计算线性相位斜率以从相位轨迹中减去，以使相位在标记值处平坦。
我相信它使用20％的推断平滑，所以如果你想看到值来自哪里，用延迟格式将轨迹上的平滑设置为20％，如果标记读数跳跃（由于噪音）那么你将
看到相位跟踪跳跃。
我建议使用1kHz IF BW进行最佳测量。
当然，所有这些都在第5章中完全解释... http://www.wiley.com/WileyCDA/WileyTitle/productCd-1119979552.html如果Ecal连接器与DUT（被测设备）上的连接器相匹配，那么只需
连接它，按ecal，你就完成了。
我们会照顾其他一切。
以上来自于谷歌翻译
以下为原文
Best is to set the format of an S21 trace to Delay: it will then show you the group delay as a function of frequency. Don't forget to turn smoothing on, and use at least 2 percent, but I would recommend 5 percent. (you can show the format as Logmag, or Phase, or Delay, or VSWR or a lot of other things).
Marker to delay takes the value of the group delay trace at the marker value, and computes the a linear phase slope to subtract from the phase trace to make the phase flat at the marker value. I believe it uses an inferred smoothing of 20% so if you want to see where the value comes from, set the smoothing to 20% on the trace with the delay format, if the marker reading jumps around (due to noise) then you will see the phase trace jump around.
I'd recommend a 1kHz IF BW for best measurements.
Of course, all this is completely explained in chapter 5...http://www.wiley.com/WileyCDA/WileyTitle/productCd-1119979552.html
If the Ecal connectors match the connectors on you DUT (device under test) then simply connect it, press ecal, and you are done. We take care of everything else.
最好是将S21轨迹的格式设置为延迟：然后它将显示作为频率函数的群延迟。
不要忘记打开平滑，并使用至少2％，但我会建议5％。
（您可以将格式显示为Logmag，或Phase，或Delay，或VSWR或许多其他内容）。
延迟标记将标记值的组延迟轨迹的值取为标记值，并计算线性相位斜率以从相位轨迹中减去，以使相位在标记值处平坦。
我相信它使用20％的推断平滑，所以如果你想看到值来自哪里，用延迟格式将轨迹上的平滑设置为20％，如果标记读数跳跃（由于噪音）那么你将
看到相位跟踪跳跃。
我建议使用1kHz IF BW进行最佳测量。
当然，所有这些都在第5章中完全解释... http://www.wiley.com/WileyCDA/WileyTitle/productCd-1119979552.html如果Ecal连接器与DUT（被测设备）上的连接器相匹配，那么只需
连接它，按ecal，你就完成了。
我们会照顾其他一切。
以上来自于谷歌翻译
以下为原文
Best is to set the format of an S21 trace to Delay: it will then show you the group delay as a function of frequency. Don't forget to turn smoothing on, and use at least 2 percent, but I would recommend 5 percent. (you can show the format as Logmag, or Phase, or Delay, or VSWR or a lot of other things).
Marker to delay takes the value of the group delay trace at the marker value, and computes the a linear phase slope to subtract from the phase trace to make the phase flat at the marker value. I believe it uses an inferred smoothing of 20% so if you want to see where the value comes from, set the smoothing to 20% on the trace with the delay format, if the marker reading jumps around (due to noise) then you will see the phase trace jump around.
I'd recommend a 1kHz IF BW for best measurements.
Of course, all this is completely explained in chapter 5...http://www.wiley.com/WileyCDA/WileyTitle/productCd-1119979552.html
If the Ecal connectors match the connectors on you DUT (device under test) then simply connect it, press ecal, and you are done. We take care of everything else.
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