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567: Difference between revisions
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voltages along the interval spanned by the two cursor voltages: | voltages along the interval spanned by the two cursor voltages: | ||
10%, 20%, 27%, 50%, 73%, 80%, and 90%. These voltages are used | 10%, 20%, 27%, 50%, 73%, 80%, and 90%. These voltages are used | ||
for making measurements such | for making measurements such as the 10%-to-90% rise time. In this | ||
case, a counter is reset and started when the signal passes through | |||
the 10% voltage. The counter counts the number of cycles of a | |||
built-in crystal clock. When the signal reaches the 90% voltage, | |||
the counter is stopped and the count is displayed on the nixie | |||
tube digital numeric readout. The units and decimal place of the | |||
digital unit are controlled switch contacts on the timing unit plug-in, | |||
which connect to the digital unit through a multipin connector in | |||
the 567. | |||