绕过PNA-X内的定向耦合器

亲爱的，由于应用，我想测量PA *的两个端口的实时* S参数。
原理图在附件中勾勒出来。
-----我使用的仪器是PNA-X N5247A，我的选项如下：-----选项详情N5247A-4004端口，双源N5247A-419增加功率范围和偏置三通到4端口
分析仪N5247A-423将内部组合器和机械开关添加到4端口分析仪N5247A-080频率偏移测量N5247A-460集成真模式激励应用N4697F柔性电缆套件，1.85 mm N4694A N4694A电子校准模块，10 MHz至67 GHz，1.85 mm，2
-port N4691B电子校准模块，300 kHz至26.5 GHz，3.5 mm，2端口-----我的问题如下：1。如果我还想使用PNA-X的校准套件，我可以更换
定向耦合器*在PNA-X *内部带有*外部*定向耦合器？2。如果我可以绕过内部定向耦合器，校准程序是否需要重写？
3.我可以正常询问校准程序重写需要多长时间？
几天，几周甚至更长？
4.是否有关于重写校准程序的应用笔记或文件？



     以下为原文

  Dear,

Due to the application, I want to measure the real time *S-parameter of the two ports of PA*.  
The schematic is sketched in the attachment.  
-----
The instrument I use is PNA-X N5247A, the options I have is as following:
-----
Options             Details
N5247A-400     4 ports, dual source
N5247A-419     Add extended power range and bias-tees to 4 port analyzer
N5247A-423     Add internal combiner and mechanical switches to 4-port analyzer
N5247A-080     Frequency offset measurements
N5247A-460     Integrated true-mode stimulus application
N4697F             Flexible Cable Set, 1.85 mm
N4694A              N4694A Electronic Calibration Module, 10 MHz to 67 GHz, 1.85 mm, 2-port
N4691B             Electronic Calibration Module, 300 kHz to 26.5 GHz, 3.5 mm, 2-port      
-----

My questions are as following:
1. If I want to still use the calibration set of PNA-X, can I replace the directional couplers *inside the PNA-X* with the *external* directional couplers？
2. If I could bypass the inside directional couplers, is the calibration routine need to be rewritten?  
3. Can I ask normally how long the calibrating routine rewriting will take? Days, weeks or even more?  
4. Are there any application notes or documents about the rewriting of calibrating routine?   
附件

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