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With the timing pattern, the timing system provides a flexible way of configuring bunch trains and auxiliary triggers. The timing pattern is originally defined in the (mostly outdated) specifications from http://ttfinfo2.desy.de/doocs/Timing/CDRv2.2short.pdf and an additional document. The timing pattern is basically an array of 7200 integers or timing words, attached to a 9-MHz clock (the first entry corresponds to time t0, the next one to t0+111 ns, and so on). Each of these words define what kinds of triggers or bunches are to be generated at that time. The details, like the bunch destination and charge, are encoded in the 32 bits of the timing word:

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