To answer your direct question How do I restrict filter to only the first table range? the answer is - you can't.
Reading the comments it seems what you need is to display the filtered table data next to a chart and another table. There is a little know tool in Excel that you can use to achieve this - the Camera Tool. With this you can create a dynamic image of a range and place it where you want. The image updates when a filter is applied to the source range, without affecting the rows on the Dashboard sheet.
Screenshots to demonstrate:
Setup with tables on seperate sheets, and camera images beside chart on dashboard sheet
With Filter applied to Table A
The Camera tool is not on the Ribbon (Excel 2010) or the standard toolbars (Excel 2003). You need to add it using Customisation. (Add to Qucik Access Toolbar in 2010 or Tools/Customisation Menu in 2003)
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