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• Are codes 255 only followed by further codes 255?
• Are all codes except 255 different from each other?
• Apart from values of 255, are the values of the codes decreasing from left to right?
2. Uncoded BOSS1 Shim Systems with less than 20 Shims
The ELCB firmware checks if the number of connected loads corresponds with the number of
shim coils defined in the BOSS file. For BOSS1 systems, the ELCB assumes 20 loads.
However, there are older, uncoded Shim Systems with less than 20 loads (e. g. only 17 shim
coils). After power up, the user is informed about that by an error message. On the BSMS
Service Web there is a button for confirmation of the actual number of loads of the currently
connected Shim System. Afterwards, the load check is executed accordingly.
3. Check ftp.bruker.ch for New BOSS files
New BOSS files are published on the following ftp location:
ftp://ftp.bruker.ch/NMR/download/servtools/bsmstool/boss/
Check this directory (and the sub-directories) for new BOSS files and installation guides/
service information. It might be necessary to update your locally installed BOSS files.
4. Swap Cables if You Have a Plug >Type Shim System
The two Shim cables 'A' and 'B' could be connected in wrong order. Swapping the connectors
at one side would eliminate the error. Make sure that the BSMS is switched off before
swapping the cables!
In case of a defective Shim cable, swapping of the cables at both ends would move a wrong
code to another position, e. g. from {<correct> <correct> <not correct>} to {<not correct>
<correct> <correct>}.
Plug or unplug this connector only when the system is powered off.
5. Perform a Detailed Hardware Check
Ask your local Bruker office for assistance.
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