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P410: Difference between revisions
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The '''Tektronix P410''' is a 10× passive voltage probe. Maximum voltage is 600 V peak-to-peak. It connects to the scope with a [[UHF connector]]. | The '''Tektronix P410''' is a 10× passive voltage probe. Maximum voltage is 600 V peak-to-peak. | ||
It connects to the scope with a [[UHF connector]]. | |||
The "P400 Series" (not to be confused with the modern [[P400]] probe) also includes P405 (5x), P420 (20x), P450 (50x), P450-L (50x extra low capacitance), and P4100 (100x). | The "P400 Series" (not to be confused with the modern [[P400]] probe) also includes | ||
P405 (5x), P420 (20x), P450 (50x), P450-L (50x extra low capacitance), and P4100 (100x). | |||
These probes were [[introduced in 1955]] along with the [[541|Type 541]] and [[545|Type 545]] scopes because at 30 MHz, the [[P510|P510A]]'s 50 Ω coax cable exhibited unacceptable ringing due to the impedance mismatch at the scope's 1 MΩ input. | These probes were [[introduced in 1955]] along with the [[541|Type 541]] and [[545|Type 545]] scopes because at 30 MHz, | ||
the [[P510|P510A]]'s 50 Ω coax cable exhibited unacceptable ringing due to the impedance mismatch at the scope's 1 MΩ input. | |||
The P400 uses a special cable with a very thin, high-resistance center conductor which creates a better impedance match. All subsequent high-impedance probes use this kind of cable. | The P400 uses a special cable with a very thin, high-resistance center conductor which creates a better impedance match. | ||
All subsequent high-impedance probes use this kind of cable. | |||
==Links== | ==Links== | ||
* [ | * [https://www.freepatentsonline.com/2883619.html US Patent 2883619, ''Electrical Probe'']. [[John Kobbe]] and [[Bill Polits]]. Filed February 1956. ([https://patentimages.storage.googleapis.com/pdfs/US2883619.pdf PDF]) | ||
{{MissingPics}} | {{MissingPics}} | ||