如何检查功率计是否确实接收到传感器的cal fac

标准8482A没有内部EEPROM，因此无法为仪表提供校准因子。
使用此传感器，您仍然需要手动将校准因子输入仪表。
有一个更新版本的8482A，N8482A有两个选项：1）STD - 这里面有EEPROM，可以将传感器校准因子加载到仪表中; 2）CFT - 这没有EEPROM，并且校准因子必须是
手动加载。



     以下为原文

  The standard 8482A does not have internal EEPROM, so it cannot provide the cal factors to the meter.  With this sensor, you still need to manually enter the cal factors into the meters.  There is a newer version of the 8482A, the N8482A which has two options: 1)STD - this has the EEPROM inside and can load sensor cal factors into the meter and 2)CFT - this does not have EEPROM and the cal factors must be manually loaded.

我知道了，谢谢。
这就解释了为什么功率计似乎没有自动加载表，我不得不手动输入。
那么对于功率传感器应该有什么设置以及错误校准的误差有多大。
FAC。
生成？
另外，我如何检查功率计是否确实接收到传感器的cal fac。
表正确吗？



     以下为原文

  I see, thank you.
That explains why the power meter didn't seem to be loading the table automatically and I had to input it manually. So what are the settings supposed to be for the power sensor and how large an error would a wrong cal. fac. generate? Also how can I check if the power meter did in fact recieve the sensor's cal fac. table correctly?

使用incorect Cal Factor引起的误差完全取决于适用于您感兴趣的频率使用的功率传感器的cal因子值与实际加载到功率计中的cal因子。
功率传感器的校准因子显示为线性值（以百分比表示）。因此，两个值之间的任何误差也都是线性的。例如，如果1 GHz功率传感器的校准因子为99，但加载的值
进入功率计是100，然后你会有-1％的错误。
如果您测量的是0.001瓦的RF信号（1 mW或0 dBm），功率计实际上会显示低1％或.00099 W的值。以dB为单位，1％误差约为0.05 dB误差。
因此，在上面的示例中，您将读取-0.05 dBm，而不是读取-0.05 dBm您可以通过按下硬键[Frequency / Cal Fac]将E4416A中的校准因子作为单个频率和值输入，并使用以下方法手动输入值：
软键。
或者您可以通过按下硬键[系统]来设置表格，然后按下软键{Tables}> {Sensor Cal Tables}。
然后，您可以选择特定传感器的表格，或创建自己的自定义表格。
转到您的特定表格并按{编辑表格}，您现在可以看到输入此表格的值。
如有必要，您可以更改它们。



     以下为原文

  The error caused by using the incorect Cal Factor is totally dependant on the value of the cal factor that applies to the power sensor you used at the frequency of interest versus the cal factor that was actually loaded into the power meter.  The cal factors for power sensors are shown as a linear value (as a percentage.)  So any error between the two values would also be linear.

For example if the cal factor for a power sensor at 1 GHz was 99, but the value loaded into the power meter was 100, then you would have a -1% error.  If you were measuring a 0.001 watt RF signal (1 mW or 0 dBm) the power meter would actually display a value 1% lower or .00099 W.  In dB a 1% error is about 0.05 dB error.  So instead of reading 0 dBm on the above example you would be reading -0.05 dBm

You can either enter the cal factor into the E4416A as a single frequency and value by pressing the hard key [Frequency/Cal Fac] and manually enter the value using the softkeys.  Or you can setup the table by pressing the hardkey [System] then press the softkey {Tables} > {Sensor Cal Tables}.  You can then select the table for your specific sensor, or create your own custom table.  Go to your specific table and press {Edit Table} and you can now see the values that are entered into this table.  You can change them if necessary.

谢谢。
这个解释很容易判断传感器是否正确读取。我想我不清楚我的问题是获得正确的校准表。
问题不在于如何输入值，而是在将正确的值输入表格后，我需要更改哪些设置，以便功率计读取校准值。
FAC。
有问题的表中的值？



     以下为原文

  Thank you. That explanation makes it easy to tell if the sensor is reading correctly.
I guess I wasn't clear about my problem with getting the correct cal table. The question is not how to enter the values, but rather after having entered the correct values into the table what settings do I need to change so that the power meter will read the cal. fac. values from the table in question?

如果您转到您看到传感器校准因子表的相同位置。
为此，按下[系统]硬键，然后按下软键{Tables}> {Sensor Cal Tables}。
然后，您可以使用向上/向下键突出显示特定传感器的表格。
突出显示要用于传感器的表后，按下软键{A Table On Off}。
这将为您的传感器打开或关闭突出显示的表格。
您可以转到[频道]键确认。
在显示屏的中间看到“CF Table”条目。
它应该显示您选择的校准因子表。
这就是它的全部。



     以下为原文

  If you go to the same location where you saw the sensor cal factor tables.  To do that press the hardkey [System] then press the softkey {Tables} > {Sensor Cal Tables}. You can then select the table for your specific sensor by highlighting it with the up/down keys.  Once you have highlighted the table you want to use for your sensor press the softkey {A Table On Off}.  This will turn the highlighted table ON or OFF for your sensor. 

You can confirm this by going to the [Channel] key.  Look halfway down the display to the entry "CF Table".  It should be displaying the cal factor table you selected.  That's all there is too it.

对不起 - 可能我有点慢，需要问...当使用E4416A + 8482A手动将校准因子表设置到E4416A时，我是否需要设置测量频率以获得正确的读数，或者使用正确的校准因子形式自动使用E4416A
桌子（我键入E4416A）？
例如。
如果我用8482A测量1GHz信号，我是否需要键入E4412A，频率为1GHz才能正确测试？是否与E4412A功率传感器相同？BR，Jaakko



     以下为原文

  Sorry - probably I a bit slow and need to ask... When using E4416A + 8482A with manually set cal factor table into E4416A do I need to set the measurement frequency to get the right reading or is E4416A automatically using the right cal factor form the table (which I keyed into E4416A)?  E.g. If I am measuring 1GHz signal with 8482A do I have to key into E4412A that the frequency is 1GHz to get he right treading?

Is it the same case with E4412A power sensor?

BR, Jaakko

是的 - 您需要设置频率。
仪表无法测量频率，必须由用户输入。对于手动输入的表格（8482A）或传感器存储器的表格（E4412A）都是如此。



     以下为原文

  yes - you do need to set the frequency. The meter has no way to measure frequency, it must be entered by the user.

This is true for both a manually entered table (8482A) or a table from sensor memory (E4412A).