Log entry time 01:11:54 on October 18, 2010

Entry number 335423

This entry is a followup to: 335407

As an example, I show here a few plots concerning run 7487 which showed
an empty FIFO in board 4 at event 6613. This produced the following in
the data stream :

- A shift on the sync words pattern within the event 
(Fig 1 for board 4 and Fig 2 for board 3 for comparison)

- A shift in the data words within the event (Fig 3 and 4, before and
after event 6613; Fig 5 and 6 for board 3).

- A shift in the internal event counter of the board, wrt to the CODA
event number (Fig 7 and 8). Notice that the internal event counter of the
board has itself shifted in position in the event data (in the same way
as in Fig 1)

Fig 1: 4th sync word of board 4 as a function of event number

Fig 2: 4th sync word of board 3 as a function of event number

Fig 3: Events <6000 for board 4

Fig 4: Events >6700 for board 4

Fig 5: Events <6000 for board 3 (good)

Fig 6: Events > 6700 for board 3 (good)

Fig 7: Board 4: (ARS event counter - CODA number) vs CODA number

Fig 8: Board 4: (ARS event counter - CODA number) vs CODA number