Allow me to speculate:

The positive X axis runs parallel to the 1-3 pin side with the + X direction 
at the pin 1 end and the Y axis is perpindicular to that and the + Y axis 
pointing toward the 5 pin.Something like this:

   +X
1 |^                  | 7

2 |                    | 6

3 |=====> +Y | 5

    Top View

I have no great expectation that the diagram will come out correctly 
however.

HTH

Vic
___________________________________________________

Vic Fraenckel
KC2GUI
victorf AT windreader DOT com 

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