怎么在SMC模式下使用PNA-X作为马刺的多输出RF源

希望那里的人可以帮助我。
我正在尝试使用4端口2源N5242A PNA-X，HP83640L和E4440A PSA来取代使用E8362B PNA（单源双端口）三个外部合成器（hp836xx），E4440A的ATE站的功能
PSA（具有噪声系数特性）和HPIB总线开关，用于测量两级下变频器上的S参数，P1dB，PSAT，噪声系数和混频器杂散，当前PNA SMC校准配置201点扫频RF输入（端口1），扫描
LO1，固定LO2（不受控制）和固定IF输出（端口2）。
当前的ATE有一个HP83640，通过总线开关从属于PNA，硬件触发产生扫频LO1，计算机控制83640（不受PNA控制）产生固定的LO2来测量S参数。
P1dB，PSAT，噪声系数和混频器杂散在直接计算机控制下使用相同的83640进行测量，并且第三计算机控制83640作为RF输入激励并且IF输出切换到E4440A PSA。
我目前在SMC操作中设置PNA-X，内部源1提供端口1的RF激励，第二个内部源提供端口3的固定LO2，并使用83640作为从属LO1源。
PNA-X使用SMC cal测量SParameters，Converter GCA app和Converter NF app分别测量P1dB和NF。
使用具有RF输入功率的SMC模式完成PSAT，使得其完全压缩DUT，然后通过报告扫描DUT输出功率来测量PSAT。
由于我只有一个外部合成器从属于PNA-X，我想使用PNA-X / 83640L“系统”向DUT提供三个CW功率校准信号，以进行CW杂散测量。
我正在考虑召回SMC cal，然后将扫频操作重置为固定频率，以便信号为CW杂散搜索测量的正确频率和功率。
三输出合成源的排序。
然后，我可以将频率设置为下一组值，并使用PSA获取新的读数。
什么是我需要发送到PNA-X的SCPI命令，以及以什么顺序将扫描的SMC cal转换为固定的CW操作而不会使电源失效。
我可以在PNA-X上手动完成，但是我尝试使用VEE从混频器重新定义混频器频率似乎不起作用，混音器设置恢复到单个阶段并且RF频率恢复到默认值。
提前感谢您花时间阅读本文并大声提供答案。
Steve Estrin原理测试工程师Cobham San Jose



     以下为原文

  Hope somebody out there can help me.  

I am attempting to use a 4 port 2 source N5242A PNA-X, an HP83640L and a E4440A PSA to replace the functionality of an ATE station that uses an E8362B PNA (single source two port,) three external sythesizers (hp836xx), an E4440A PSA (with Noise figure personality) and an HPIB bus switch to measure S Parameters, P1dB, PSAT, noise figure and mixer spurs on a two stage down converter, The current PNA SMC cal is configured 201 point swept RF in (port1), Swept LO1, fixed LO2 (not controlled) and a fixed IF out (port2).  

The current ATE has a HP83640 slaved to the PNA thru the bus switch with hardware triggering to generate the swept LO1, and a computer controlled 83640 (not controlled by the PNA) to generate the fixed LO2 to measure the S Parameters.  

P1dB, PSAT, Noise figure and mixer spurs are measured using the same 83640s under direct computer control as well as a third computer controlled 83640 as the RF input stimulus and the IF out switched to the E4440A PSA.  

I currently have the PNA-X set up in SMC operation with the internal source 1 providing the RF stimulus out of port 1, the second internal source providing the fixed LO2 out of port 3 and uses an 83640 as the slaved LO1 source. The PNA-X using an SMC cal to measure the SParameters, the Converter GCA app and Converter NF app to measure P1dB and NF respectively. PSAT is accomplished using the SMC mode with the RF input power such that it fully compresses the DUT and then PSAT is measured by way of reporting the swept DUT output power. Since I only have the one external synthesizer slaved to the PNA-X, I want to use the PNA-X/83640L "system" to provide the three CW power calibrated signals to the DUT for doing the CW spur measurements. I am thinking along the lines of having the SMC cal recalled and then resetting the swept frequency operation to fixed frequency on so that the signals will be the correct frequencies and powers for the CW spur search measurement. Sort of a three output synthesized source. I could then set the frequencies to the next set of values and take a new reading with the PSA. What are the SCPI commands that I need to send to the PNA-X, and in what order, to convert the swept SMC cal to a fixed CW operation without invalidating the power cals.
I can do it manually on the PNA-X but my attempts to redefine the mixer frequencies to CW from swept using VEE don't seem to work, the mixer setup reverts to a single stage and the RF freqs go back to the default values.

Thanks in advance for taking the time to read this and hopfully provide an answer.

Steve Estrin
Principle Test Engineer
Cobham San Jose