P410: Difference between revisions
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The Tektronix P410 is a | [[File:P400-Series_Probes_1957.png|thumb|300px|right|P400 series catalog excerpt from 1957]] | ||
Maximum voltage is 600 V peak-to-peak. | 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]]. | 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 [[ | 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. It 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== | |||
* [http://www.freepatentsonline.com/2883619.html US Patent 2883619, ''Electrical Probe'']. [[John Kobbe]] and [[Bill Polits]]. Filed February 1956. ([http://patentimages.storage.googleapis.com/pdfs/US2883619.pdf PDF]) | |||
* [http:// | |||
[[Category:1 MOhm Oscilloscope Probes]] | [[Category:1 MOhm Oscilloscope Probes]] | ||
Revision as of 02:27, 6 August 2017
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).
These probes were introduced in 1955 along with the Type 541 and Type 545 scopes because at 30 MHz, the P510A's 50 Ω coax cable exhibited unacceptable ringing due to the impedance mismatch at the scope's 1 MΩ input. It 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
- US Patent 2883619, Electrical Probe. John Kobbe and Bill Polits. Filed February 1956. (PDF)