Not all of the Address lines had activity. This is indicated by the “I” symbol. To see which lines had no activity, place the cursor on the Address label and click the right mouse button. Select the “Expand” pick to see the Eye Finder measurement for each Address line.

Several other lines had no activity. For this measurement none of the Chip Select lines were hooked up, so they had no activity and so showed themselves as stable for all time.

It would be OK to simply use the analyzer sample positions calculated by Eye Finder using this stimulus. However, you have the option of adjusting the actual sample positions. The following display shows how the sample positions were adjusted to be closer to the same value for use in sampling the Command bus. This was done more for aesthetic reasons than anything else. The Address bus is shown as a “stack of channels”, which is a convenient way of seeing the individual bits of a label at once. It is selected from the right clock pull down menu.

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Agilent Technologies FS2331 user manual