Up for sale is a used HP A Power Sensor as can be seen in the pictures. This item is in working condition, however, it’s sold as-is, as described. Nothing. A remarkable HP product, the HPA sensor. It appeared on the market about , and still today, these devices are very much thought. Agilent / HP A Power Sensors 10 MHz to 18 GHz, 1 uW to mW, Refurbished HP Agilent Hewlett Packard – Used Test Equipment at Test Equipment.
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HP 8481A Power Sensor: why are they all blown?
E-solder or other type of silver conductive glue may work for some few years on such substrate and geometry. I just purchased 4881a pure indium and would begin experiment several days later.
Quite some detail about this sensor can be found in the HP Journal, edition pages 19ff. Notify me of new posts by email. The conductive epoxy I can recommend is E-Solderit is not cheap, but if you keep it in the fridge not freezer it up keep well for a long time.
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Silver paste solder is an option? Could the epoxy still have good conductivity in the several GHz and microwave frequency?
This is all real gold on sapphire substrate! Never tried to use indium on sapphire substrate only used if for contacting ceramics-supraconductors. I have no idea! Will try to attach a SMD with some conductive epoxy.
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HP A Power Sensor: why are they all blown? | SimonsDialogs
Hi Rene, to measure if the elements are defect, you need to remove the sensor element from the device which is a bit tricky, because of the gold wires, etc.
I had experience that the gold on sapphire substrate was totally dissolved by normal Sn-Pb solder.
I found there are four screws. Maybe pure indium solder could ease this phenomenon.
HP Agilent Keysight, A
It appeared on the market aboutand still today, these devices are very much thought after. Learn how your comment data is processed. This site uses Akismet to reduce spam. Still, there are many sensors around that are blown — why do so many people connect them to 0.
Leave a Reply Cancel 848a Your email address will not be published. There is says that the sensor can withstand np power, and even 0. All you need is a steady hand! Good idea to bypass one of the thermocouples.
HP Hewlett Packard 8481A RF Power Sensor 18ghz 50ohm
Absolutely, conductive silver epoxy is also used by in industrial production, fo GHz purposes. Maybe if the reference is blown, and you replace it by a resistor, you could still get some readings from the power meter, with very much offset baseline, and accuracy would be gone anyway, but may still be usable for some test purposes.
Note the capacity values — measures: