User name R. Michaels
Log entry time 12:06:45 on April 1,2007
Entry number 197698
keyword=L-arm RT problems, HV problem
The HV on L-arm S1-5L is not engaging. I'll try to fix it.
I noticed a problem with L-arm RT. There were jumps by 50 nsec
and 22 nsec relative to L1A. After tracing this down I found
it was due to some delays added to the INPUT of the discriminator
for S1 PMTs. I think this was done for TDC dynamic range issues
but it causes problems for the trigger. Normally we want all
PMTs to be aligned in time. Will try to fix it.