User name R. Michaels
Log entry time 10:44:19 on January12,2002
Entry number 80141
keyword=DAQ problems, fixed
There was a problem with ROC2, lots of error messages upon
prestart. At first we thought it might be a bad SFI controller or
other hardware. But Dave Abbott logged in from home and explained
from the error messages that we were doing illegal fastbus addressing.
There turned out to be two problems, which we have fixed:
1. The PEDRUNL configuration (pedestal runs for Left HRS) was
not receiving triggers because of the busy inhibit from ROC4 (RCS crate).
Solution was to include ROC4 into the PEDRUNL.
2. If there is a CODA file but no useful triggers, the pedestal determination
software had a bug of producing bogus output (pedestal file) which later
resulted in accessing non-ADC slots. This was fixed and tested before
we fixed problem 1. (BTW, it already does not produce ped files if there
is no CODA file, or if the pedestal fits fail, but this problem was not anticipated