User name R. Michaels
Log entry time 18:28:48 on July26,2003
Entry number 107121
This entry is a followup to: 107096
keyword=L-arm helicity restored (probably)
It appears that the 2 signals "Gate" and "Helicity" were swapped at the patch panel.
I have no confirmation about what is the correct patch panel cabling, and we should
ask the person who was working there Friday -- or else do an access and double
check the cabling -- but this makes sense because: a) the ordering of cables at the
patch is now the same on L-arm and R-arm. I did not touch R-arm. b) The scalers
make sense now; equal data in plus and minus helicity, and the helicity itself is
counted in 32nd channel and makes sense; and c) Helicity flag shows up now in
ROC11 I/O register. Unfortunately it does NOT show up in the ADC, but I guess
that is a different problem (probably some ADC chaos between experiments, the
ADC flag was for sure working in May).
So, modulo the above mentioned concerns, the L-arm helicity is probably ok now.