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.
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