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User name Franklin/Parno
Log entry time 16:39:23 on February 24, 2009
Entry number 263150
keyword=Compton FADC problem "fixed"
Yesterday evening (2/23) the Compton FADC DAQ quick working in mid-run.
The DAQ buffers contained the "FADC not ready" flag. Both the
Accumulator configuration and the Triggered configuration had the same
problem. It appeared that the FADC was not receiving a "stop" signal.
(Although the same NIM signal is sent to the TIR trigger bit and this was
working.) After a day of debugging, it appears the the internal FADC
register bit that is used to test for FADC ready quit working in mid-run
but everything else works. We modified the CODA crl files to avoid
testing this bit and both the Accumulator mode and Triggered mode now
seem to work.
A copy of this log entry has been emailed to: rom