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7J20: Difference between revisions
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caption=Tektronix 7J20 in 7633 mainframe| | caption=Tektronix 7J20 in 7633 mainframe| | ||
introduced=1975 | | introduced=1975 | | ||
discontinued= | discontinued=1976 | | ||
series=[[7000-series scopes]]| | series=[[7000-series scopes]]| | ||
manuals= | manuals= | ||
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}} | }} | ||
The '''Tektronix 7J20''' is an optical spectrometer for the 250 nm to 1100 nm region. | The '''Tektronix 7J20''' is an optical spectrometer for the 250 nm to 1100 nm region, based on a [http://en.wikipedia.org/wiki/Monochromator#Czerny-Turner_monochromator Czerny-Turner Monochromator]. It only appears in the 1975 catalog. | ||
It is a "rapid scan" spectrometer, which means that it can capture the spectrum quickly enough to show how the spectrum of an optical input changes at temporal resolution of a few milliseconds. | It is a "rapid scan" spectrometer, which means that it can capture the spectrum quickly enough to show how the spectrum of an optical input changes at temporal resolution of a few milliseconds. | ||
The 7J20 is | The 7J20 is very rare. according to Dennis Tillman, ''Best estimate is ~40 were actually built.'' | ||
==Specifications== | ==Specifications== | ||