该型号分析仪太旧，无法升级到噪声系数选项。
您必须使用较新的PNA（N522x）或PNA-X（N524x）才能升级到噪声系数选项。
两个选项是028（使用PNA接收器）或029（添加一个特殊的低噪声接收器）。
两个噪声接收器在合理的时间内都需要更宽的带宽。
我知道 - 一个客户使用较旧的PNA进行噪声系数测量，但是他们获得了博士学位。
学生和六个月的代码编写。
我认为这不符合成本效益。
也许更好的选择是交易旧产品。
以上来自于谷歌翻译
以下为原文
That model analyzer is too old to allow upgrading to the noise figure option. You must have a newer PNA (N522x), or PNA-X (N524x) to allow upgrading to the noise figure options.
The two options are 028 (use the PNA receiver) or 029 (add a special low noise receiver).
Both receivers for noise have much wider bandwidths needed for reasonable time.
I do know -one- customer that made noise figure measurements with older PNAs, but it took them a Ph.D. student and six months of code writing. I don't think it would be cost effective. Maybe a better choice is to trade in your older product.
该型号分析仪太旧，无法升级到噪声系数选项。
您必须使用较新的PNA（N522x）或PNA-X（N524x）才能升级到噪声系数选项。
两个选项是028（使用PNA接收器）或029（添加一个特殊的低噪声接收器）。
两个噪声接收器在合理的时间内都需要更宽的带宽。
我知道 - 一个客户使用较旧的PNA进行噪声系数测量，但是他们获得了博士学位。
学生和六个月的代码编写。
我认为这不符合成本效益。
也许更好的选择是交易旧产品。
以上来自于谷歌翻译
以下为原文
That model analyzer is too old to allow upgrading to the noise figure option. You must have a newer PNA (N522x), or PNA-X (N524x) to allow upgrading to the noise figure options.
The two options are 028 (use the PNA receiver) or 029 (add a special low noise receiver).
Both receivers for noise have much wider bandwidths needed for reasonable time.
I do know -one- customer that made noise figure measurements with older PNAs, but it took them a Ph.D. student and six months of code writing. I don't think it would be cost effective. Maybe a better choice is to trade in your older product.
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