Special Oscilloscope Variants

The Multiplier Oscilloscope

One of the latest oscilloscope features is the multiplication of signals. With this feature, it is possible to study instantaneous power. For instance, during the switching transients in logic circuitry, the collector voltage can be seen as a function of time. Also, the collector current can be shown on the screen. The product of these parameters is then a measure of the collector dissipation. But, it is difficult to study the instantaneous power from the screen. For this, the analog multiplier provides a solution.

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The Storage Oscilloscope: Storage Principles

Storage oscilloscopes are used in applications where the display time at the screen is too short to examine the signals to be measured. If a single-shot signal is to be measured, only one sweep is generated. During this sweep, the screen is excited by the high-energy electron beam. When the beam is suppressed at the end of the single sweep, a phosphorescence remains for some time. The time that the phosphorescence remains visible is dependent upon the type of phosphor used and is referred to as the persistence of the tube. The persistence is the time that the intensity, after the excitation, takes to decay to a level of I/ e of the level attained during excitation (e = 2.72 = base of natural logarithms).

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