The range setting in the 54112D allows you to specify the width of the main time display.? ?
From the documentation it looks as though it is possible to use any value for the graph width e.g. 60.5mS
Other parts of the manual indicate that the display width is fixed at 500 points
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For both of these to be true, the scope software may either be resampling the data before it is displayed or dynamically changing the ADC sampling rate
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Slightly newer HP scopes, like the 54504A, force the user to use a 1,2,5 sequence i.e. if you request a 60mS time graph width the scope will automatically round to the preferred value of 50mS.?
This seems to make more sense as each time width corresponds to a sample rate that could be derived by simple clock division
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So I'm not 100% understanding how the 54112D allows you to use non-preferred steps when defining the time base
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Is anyone able to cast some light or point me in the direction of relevant documentation?
?
Peter
