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{{#category_index:S|scan}} 1. One complete sequence of events, such as sampling all record channels or beam-steering for all apparent dips. 2. A display of data calculated with different parameter values, used to select the optimum parameter value. A velocity scan or velocity panel is shown in Figure V-7. 3. To examine in a systematic way, as to look through a data set to see the effects of a parameter or parameter change. 4. To traverse systematically as is done by an electron beam in a television tube.