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我有一台HP X486A X波段WR90波导功率传感器,但我没有兼容的仪表,所以不知道传感器是否工作。
我能做的任何测试至少表明它是否正常? 我有一个20 GHz VNA和自制的波导校准套件,所以我可以检查回波损耗,但如果设备被烧断,那还能没问题吗? 有人说可以使用DVM测试这些,但如果是这样,我该怎么做? 我基本上不需要这个,所以想要将它与电缆一起出售,但我知道这种感觉经常被炸毁,所以我想至少运行一个基本的功能测试。 戴夫。 以上来自于谷歌翻译 以下为原文 I've got an HP X486A X-band WR90 waveguide power sensor, but I don't have a compatible meter, so have no idea if the sensor works. Are there any tests I can do which would at least indicate if it is OK? I have a 20 GHz VNA and home-built waveguide calibration kit, so I can check the return loss, but would that still be ok if the unit was blown? Someone said one can test these with a DVM, but if so how do I do it? I basically have no need for this, so want to sell it along with a cable, but I'm aware the sensort often get blown up, so would like to run at least a basic test of functionality. Dave. |
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戴夫,一般来说功率传感器的回波损耗让你知道它是否被吹过!
你也可以用DVM检查那些,基本上那些传感器包含两个100或200欧姆的热敏电阻(我忘了它在432上有多少),这两个在仪表中形成一个带有2个其他电阻的电桥,下载432A / B维修手册,可以让您了解要测量的引脚,每个热敏电阻应该在100或200欧姆左右(随温度变化不大) 以上来自于谷歌翻译 以下为原文 dave , generally the return loss of a power sensor gives you a good idea whether its blown or not ! also you can check those with a DVM , essentially those sensors contain two thermistors which is either 100 or 200 ohm ( i forgot how much it was on the 432 ), those two form a bridge with 2 other resistors in the meter , download the 432A/B Service manual which will give you a idea of which pins to measure, you should get somewhere around 100 or 200 ohm for each thermistor ( will vary slightly with temperature ) |
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