是德科技
直播中

崔丽

7年用户 231经验值
私信 关注
[问答]

Range Calibrator HP11683A如何根据uW和dB单位计算不确定度

我一直在校准Range Calibrator HP11683A,但我不知道如何根据uW和dB单位计算不确定度。
根据服务指南,所有读数均以伏特和欧姆为单位,但实际读数以uW和dB为单位。
谁可以帮我这个事。

以上来自于谷歌翻译


     以下为原文

  I have been calibrating the Range Calibrator HP11683A but I don't know how to calculate the uncertainties in terms of uW and dB units. Based on the service guide,all the readings are measured in volts and ohms but the actual readouts are in uW and dB. Can anyone help me on this.  

回帖(1)

李建平

2019-5-24 11:58:30
转换是功率方程式P = EI,或者因为您只有电压P(瓦特)=电压^ 2 x电阻(欧姆)。
dBm是以dB为单位的功率,以0.001瓦为参考。
所以P(dBm)= 10 x log(P(瓦特)/ 0.001(瓦特))。如果你试图计算11683A的输出不确定性,这是一个非常复杂的问题,在讨论论坛上不容易解释。
我建议您拨打1-800-829-4444致电安捷伦的在线技术支持团队。
祝你好运!

以上来自于谷歌翻译


     以下为原文

  The conversions are the power equations P=EI or since you only have the voltage it would be P (watts) = voltage^2 x resistance (ohms).  dBm is the power in dB as referenced to 0.001 watts.  So the P (dBm) = 10 x log (P (watts) / 0.001 (watts)).

If you are trying to calculate the output uncertainty of the 11683A, this is a very complex issue, not easily explained over a discussion forum.  I would recommend that you call Agilent's online technical supprt team at 1-800-829-4444.  Good luck!
举报

更多回帖

发帖
×
20
完善资料,
赚取积分