Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Central Logic Board and its auxiliary boards for the optical module
  of the KM3NeT detector   The KM3NeT neutrino telescope will be composed of many optical modules, each
of them containing 31 (3") photomultipliers, connected to a Central Logic
Board. The Central Logic Board integrates Time to Digital Converters that
measure Time Over Threshold of the photomulti- pliers signals while White
Rabbit is used for the optical modules time synchronization. Auxiliary boards
have also been designed and built in order to test and extend the performance
of the Cen- tral Logic Board. The Central Logic Board, as well as the auxiliary
boards, will be presented by focusing on the design consideration, prototyping
issues and tests.

34
The categories of this paper are: chem-ph
35
The categories of this paper are: mtrl-th
15
The categories of this paper are: nucl-ex
24
The categories of this paper are: dg-ga
9
The categories of this paper are: nlin
8
The categories of this paper are: hep-ex
22
The categories of this paper are: chao-dyn
17
The categories of this paper are: q-fin
5
The categories of this paper are: gr-qc
25
The categories of this paper are: patt-sol
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The categories of this paper are: q-alg
29
The categories of this paper are: funct-an
18
The categories of this paper are: econ
36
The categories of this paper are: cmp-lg
12
The categories of this paper are: nucl-th
26
The categories of this paper are: bayes-an