EXFO FOA Compatibility - Manual (Page 3)

P/N: 1057456 November 2009 3/3
Below you can see the new FOA model and an old faceplate. Since the
thread in the FOA is longer than the one on the plate, the connection is
done fully, as you can see from the side and front views.
Below you can see the old FOA used on a new plate. The thread of the FOA
is not deep enough and the connection is not complete. The FOA is not
aligned properly when you look at it from the front.
Note: All of the other FOAs in the FOA-3xx series that were not mentioned in the
table are compatible with both faceplate designs.