SMC+相位转换器测量

我一直在使用SMC +相位转换器测量几个月，并且从未对它报告的“绝对阶段”答案感到满意。
我知道有一个设置基本上将波段中心或其中一个波段边缘固定为“零相位”，所以我并不知道我到底究竟采用了什么样的相位测量。
这是我的设置：我有一个多通道转换器。
每个通道应该是相位匹配的。
我已经通过SMC + Phase测量了每个通道的响应。
在连接到下一个通道之前，我在每个通道测量期间多次重新调整PNA和系统。
现在，我正在尝试在PNA上进行同时输出相位测量：我同时向每个PNA端口输入分离CW信号，并设置接收器B / A，C / A，D / A的mag（）和相位（）测量
。
我将所有测量标准化为“校准”，因为相同的信号应该进入所有输入。
然后，我将分离的CW信号放入我的系统输入，并将我的系统输出连接到PNA输入。
所以我应该测量通道之间的相对磁场和相位。
如果我通过此测量得到通道之间的相位偏移，我是否也能够在我的SMC + Phase数据中看到它，或者由于我上面关于“相位修正为零”的陈述而不能看到它？
如果我没有在SMC + Phase的连续扫描之间得到“绝对相位测量”，那么我可以使用哪种其他技术来获取数据？
谢谢！
Alan编辑：alanpna于2015年8月4日上午8:58



     以下为原文

  I have been working with SMC+Phase converter measurement for a few months now and have never been comfortable with the "absolute phase" answer it reports. I know there is a setting to basically fix either the band center or one of the band edges to "zero phase," so I am not confidant about exactly what kind of phase measurement I am getting.

Here is my setup: I have a multiple channel converter. Each channel is supposed to be phase matched. I have gone through and measured response of each channel with SMC+Phase. I re-tuned the PNA and system multiple times during each channel measurement before connecting to the next channel. Now, I am trying to do a simultaneous output phase measurement on the PNA: I input a split CW signal to each PNA port simultaneously and setup mag() and phase() measurements of receivers B/A, C/A, D/A. I normalize all measurements as a "calibration" as the same signal should be going into all inputs. Then, I put the split CW signal to my system inputs and connect my system outputs to the PNA inputs. So I should be measuring relative mag and phase between channels. If I get phase offsets between channels with this measurements, will I also be able to see that in my SMC+Phase data, or will it not be visible due to my above statements about the "phase fix to zero"?

If I don't get an "absolute phase measurement" between successive sweeps with SMC+Phase, as it appears, what other technique can I use to get that data?

Thanks!
Alan

Edited by: alanpna on Aug 4, 2015 8:58 AM