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10
Probe Set-up
Probe overview
The FS2343 Interposer probe uses an AMB device in “LAI” mode and provides the
appropriate FBDIMM connections to an “interposed” FBDIMM device for it to operate
within the memory bus. The LAI mode performs 2 functions. First, it demultiplexes and
decodes the NB and SB traffic into the frame based information that is presented to the
logic analyzer. Second, it acts as a link in the NB and SB chain in the memory bus. In
this case it looks logically as an “upstream” or northside node to the interposed FBDIMM
in its straddle connector.
Mechanical Brackets
The FS2343 Interposer probe can be used in several orientations. The first is a straight
up from the backplane, or 180 degree orientation, which requires that the 2 straight
brackets be assembled to the probe at its top and bottom with the associated nylon
hardware.
Care must be taken whenever the flex portion of the probe is moved, as FBDIMM
signal integrity will degrade with repeated flexing.
Make sure that no portion of the probe is touching other surfaces in the target
system and be sure that the cables from the probe to the Paddle card are free
from kinks and any sharp or hot surfaces that may damage the cables.