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[问答] 测试8482B功率传感器的推荐水平是多少?
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您好,测试8482B功率传感器的推荐水平是多少?是否使用固定衰减器测试传感器是否受到传感器攻击?如果我使用8482A传感器作为此测量的参考,则传感器的电平约为10 dBm
存在影响校准因子计算的漂移。
(我使用2 X 8482A,在测试设置中通道功率计和功率分配器,即我的发生器的电平高6 dB)传感器本身有一个黑色塑料保护环,禁止它连接正常N
- 连接器因此单独测试传感器并分别测量衰减器的衰减并不容易,然后计算校准因子。
该怎么办?坦克任何建议!

以上来自于谷歌翻译


     以下为原文

  Hello,

What is the recommended level for testing the 8482B power sensor?

Is the sensor tested with or without the fixed attenuator attacked to the sensor?

IF I use an 8482A sensor for reference for this measurement and a level of about 10 dBm into the sensor there is an drift that influence on the calculation of the calibration factors. (I use 2 X 8482A, to channel power meter and  a power splitter in the test setup, i.e the level from my generator is then 6 dB higher)
The sensor itself has an black plastic protection ring that prohibits it from connect on an normal N-connector so it's not that easy to test the sensor alone and measure the attenuation of the attenuator separate, for then compute the calibration factors. What to do?

Tanks for any aDVIce!
0
2019-7-11 15:48:31   评论 分享淘帖 邀请回答
1个回答
8482B传感器主体和衰减器被认为是一个单元,并作为一个单元进行校准。
它们的设计不能单独校准以产生校准因子。
如果主体和衰减器被校准为单个单元,则功率传感器将仅满足其规格。
主体和衰减器之间的任何内部反应都会对测量精度产生影响。
这些相互作用类似于:连接器可重复性,连接器损耗,失配丢失等。在此功率传感器上执行校准的RF电平将根据所执行的测试而变化。
但+30 dBm将是该传感器的标准功率水平。我建议计量实验室执行校准和性能验证。
需要进行更多的测试,而不仅仅是校准因子,以确保功率传感器符合其规格:零点设置,噪声,线性等。

以上来自于谷歌翻译


     以下为原文

  The 8482B sensor body and attenuator are considered one unit, and are calibrated as one unit.  They are not designed to be calibrated seperately to create the cal factors.  The power sensor will only meet its specification if the body and attenuator are calibrated as a single unit.   Any internactions between the body and the attenuator will have an inpact on the measurement accuracy.  These interactions are things like: connector repeatability, connector loss, mismatch loss, etc.

The RF levels to perform a calibration on this power sensor will vary depending on the tests being performed.  But +30 dBm would be a standard power level for this sensor.

I would recommend that a metrology lab perform the calibration and performance verificaiton.  More tests than just the cal factors needs to be done to ensure that the power sensor is meeting its specifications: zero set, noise, lineratiry, etc.
2019-7-11 15:58:46 评论

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