PNA-X：某些IMX通道上的RF功率错误

我看不到家里的电量，但在我看到的状态下，delta频率设置为0 Hz。
这是有意的吗？
如果是这样，形式不好;
因为音调可以添加或取消并给出结果。
如果需要单音响应，请将PNA port1src2设置为关闭。



     以下为原文

  I can't see the power at home, but in the state that I see, the delta frequency is set to 0 Hz.  Is that intended?  IF so, bad form; as the tones can add or cancel and give weired results.  If you want a single-tone response, set the PNA port1src2 to off.

嗨，我将delta F设置为0，因为我想输出该频率，而不是偏离它。
然后我通过'Power'和'Power and Attenuators'对话框将'PNA port1src2'更改为off'。
但奇怪的是，每当我通过'Stimulus' - 'Freq' - 'IMX Spectrum Setup'进行任何更改时，固件会自动再次打开源2！
另外，无法通过激励“IMX Spectrum Setup”对话框关闭源2;
只能通过'Power and Attenuators'对话框。
我确实尝试过关闭和修改源2的实验，但在任何一种情况下它仍然给了我错误的RF功率。
（达到端口允许的最大值）。
我使用安捷伦频谱分析仪测量PNA-X射频端口1的输出功率。
所以我不确定为什么2个不同的imdx通道在相同的状态文件中并且使用相同的校准文件的行为如此不同，当它们都被配置为输出-20dBm时。
韩国



     以下为原文

  Hi,

I set the delta F to 0 because I want to output that frequency, rather than some offset from it. I then change the 'PNA port1src2 to off' via the 'Power' and 'Power and Attenuators' dialog box. But a strange thing is that whenever I make any change via 'Stimulus'-'Freq'-'IMX Spectrum Setup', the firmware automatically turns source 2 on again! Plus there is no way to turn off source 2 through the stimulus 'IMX Spectrum Setup' dialog box; only through the 'Power and Attenuators' dialog box. I did try the experiment with modifying source 2 off and on, but it still gave me the wrong RF power in either case. (up to the max allowed on the port). I used an Agilent spectrum analyzer to measure the output power coming off the RF Port 1 of the PNA-X. So I'm not sure why 2 different imdx channels in the same state file and using the same calibration file is behaving so differently, when they both are configured to output -20dBm.

rok

我要做的是解决第二个来源的问题：在“电源和衰减器”菜单中，您可以选择路径配置并切换旁路开关。
因此，即使第二个源被打开，它也不会被耦合。



     以下为原文

  What I do to get around issues with the second source turning back on:

IN "power and attenuators" menu, you can select path configuration and toggle the bypass switch. So, even if the second source gets turned on it will not be coupled.

您好再次问：以下是我的实验中的更多结果：我已升级到最新的A.09.42.18固件，但我仍然遇到同样的问题。
在回顾我用来创建状态文件的步骤时，我想我发现了问题。
如果我在现有的IM Spectrum转换器通道上使用以下例程，其deltaF = 0MHz且第二个源关闭：SENSE：MIX：LO：POW SENSE：MIX：APPL它将改变LO功率，但它也会改变deltaF
该通道从0到10MHz，当它不应该并且也打开第二个源。
我相信这会导致渠道权力以某种方式被破坏。
因此，即使列出的所述RF功率与之前相同（即-20dBm），在内部，它也会以某种方式重置为最大输出功率（即，间歇行为）。
至少这是我的理论。
我使用Agilent IO控制交互窗口验证了上述行为。
安捷伦固件人员可以验证这一点吗？
谢谢，rok



     以下为原文

  Hello again,

Here are some more findings from my experimentation:

I've upgraded to the latest A.09.42.18 firmware, but I still get the same problem. In retracing the steps I used to create the state file, I think I found the problem. If I use the following routine on an existing IM Spectrum Converters channel whose deltaF=0MHz and the second source is turned off:

SENSE:MIX:LO:POW  
SENSE:MIX:APPL

It will change the LO power, but it also changes the deltaF of that channel from 0 to 10MHz, when it shouldn't and also turns on the second source. I believe that it leads to the channel powers being corrupted somehow. So even though the stated RF power listed is the same as before (i.e. -20dBm),  internally, it gets reset to max output power somehow for some of the channels (i.e. intermittent behavior). At least that is my theory. I verified the above behavior using the Agilent IO control interactive window. Can the agilent firmware folks verify this?

Thanks,
rok