嗨Jay，我们称之为“True Mode Stimulus Application”或iTMSA的测量类型。
此测量要求您的分析仪在PNA内部和模型上有两个实际源，即选项246.因此，除非您有选项246或4端口PNA-X，否则您无法执行iTMSA测量。
但是，就校准而言，任何4端口校准方法都可以用于iTMSA测量或混合模式s参数方法（一组用于计算差分参数的单端s参数测量）
使用超位置原理）。
至于你的具体问题：1-是任何满足4端口校准的“直通选择”是可以接受的。
2-如果您有一个4端口PNA并且您正在进行4端口校准，那么只有一个有效的端口组合可以校准，即端口1,2,3和4.换句话说，
没有什么可供你选择，所以选择是灰色的。
这样想：如果你有4端口PNA并且想要进行2端口校准，那么你有很多选择 - 校准端口1和2，或1和3，或1和4，或2
3，或2和4，或最后3和4，这是一个组合问题，4个项目一次采取2顺序不重要，给出6选择。
但是，一次只有4个项目只有4个选项，因此灰色选择:-)如果你没有选项246，使用混合模式计算差分参数的方法是完全有效的，如果你的设备
在线性条件下运行。
以下是一些可能有用的信息：本william hill官网
的另一个主题是艾森斯塔特和博克尔曼的论文
以上来自于谷歌翻译
以下为原文
Hi Jay,
We call the type of measurement you are talking about "True Mode Stimulus Application" or iTMSA. this measurement requires that your analyzer have two actual sources inside and on your model PNA that is option 246. So, unless you have option 246 or a 4-port PNA-X, you cannot perform an iTMSA measurement. However, as far as the calibration is concerned, any 4-port calibration method will work fine for either iTMSA measurements or the mixed mode s-parameter method (a set of single-ended s-parameter measurements that are used to compute the differential parameters using the super-position principle).
As to your specific questions:
1- yes any of the "thru selections" that satisfies the 4-port cal is acceptable.
2- if you have a 4-port PNA and you are doing a 4-port calibration, then there is only one valid combination of ports that you can calibrate and that is ports 1,2,3, and 4. in other words, there is nothing for you to select, so the choice is grayed out. think of it this way: if you have 4-port PNA and you want to do a 2-port calibration, then you have a number of options - calibrate ports 1 and 2, or 1 and 3, or 1 and 4, or 2 and 3, or 2 and 4, or finally 3 and 4, It is a combinatorial problem, 4 items taken 2 at a time where order is not important, gives 6 choice. However, there is only 1 option for 4 items taken 4 at a time, hence the grayed out selection :-)
if you don't have option 246, using the mixed mode method of computing the differential parameters is perfectly valid, if your device is operating under linear conditions. Here is some info that might be helpful:
another thread in this forum Paper by Eisenstadt and Bockelman
嗨Jay，我们称之为“True Mode Stimulus Application”或iTMSA的测量类型。
此测量要求您的分析仪在PNA内部和模型上有两个实际源，即选项246.因此，除非您有选项246或4端口PNA-X，否则您无法执行iTMSA测量。
但是，就校准而言，任何4端口校准方法都可以用于iTMSA测量或混合模式s参数方法（一组用于计算差分参数的单端s参数测量）
使用超位置原理）。
至于你的具体问题：1-是任何满足4端口校准的“直通选择”是可以接受的。
2-如果您有一个4端口PNA并且您正在进行4端口校准，那么只有一个有效的端口组合可以校准，即端口1,2,3和4.换句话说，
没有什么可供你选择，所以选择是灰色的。
这样想：如果你有4端口PNA并且想要进行2端口校准，那么你有很多选择 - 校准端口1和2，或1和3，或1和4，或2
3，或2和4，或最后3和4，这是一个组合问题，4个项目一次采取2顺序不重要，给出6选择。
但是，一次只有4个项目只有4个选项，因此灰色选择:-)如果你没有选项246，使用混合模式计算差分参数的方法是完全有效的，如果你的设备
在线性条件下运行。
以下是一些可能有用的信息：本william hill官网
的另一个主题是艾森斯塔特和博克尔曼的论文
以上来自于谷歌翻译
以下为原文
Hi Jay,
We call the type of measurement you are talking about "True Mode Stimulus Application" or iTMSA. this measurement requires that your analyzer have two actual sources inside and on your model PNA that is option 246. So, unless you have option 246 or a 4-port PNA-X, you cannot perform an iTMSA measurement. However, as far as the calibration is concerned, any 4-port calibration method will work fine for either iTMSA measurements or the mixed mode s-parameter method (a set of single-ended s-parameter measurements that are used to compute the differential parameters using the super-position principle).
As to your specific questions:
1- yes any of the "thru selections" that satisfies the 4-port cal is acceptable.
2- if you have a 4-port PNA and you are doing a 4-port calibration, then there is only one valid combination of ports that you can calibrate and that is ports 1,2,3, and 4. in other words, there is nothing for you to select, so the choice is grayed out. think of it this way: if you have 4-port PNA and you want to do a 2-port calibration, then you have a number of options - calibrate ports 1 and 2, or 1 and 3, or 1 and 4, or 2 and 3, or 2 and 4, or finally 3 and 4, It is a combinatorial problem, 4 items taken 2 at a time where order is not important, gives 6 choice. However, there is only 1 option for 4 items taken 4 at a time, hence the grayed out selection :-)
if you don't have option 246, using the mixed mode method of computing the differential parameters is perfectly valid, if your device is operating under linear conditions. Here is some info that might be helpful:
another thread in this forum Paper by Eisenstadt and Bockelman
举报
举报
