TPC pedestal runs- new instructions

From: Konstantin Olchanski (olchansk@ux1.phy.bnl.gov)
Date: Tue May 30 2000 - 09:57:25 EDT

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    Folks, please read these updated instructions on running TPC pedestals runs:

1) pulser enable: changes were made to the pulser hardware. The regular
           pulser no longer always runs, and sometimes has to be manually
           enabled.

2) pulser scaledown: please run TPC pedestal runs with the pulser scaledown
           set to 200 instead of the old value of 100.

Note that the DAQ runs and records correct pedestals at higher rates,
but would timeout and generate a run error when one tries to end or pause
the run. This timeout problem is only present when running TPCs in black and
pedestals modes and is caused by problems with the VxWorks networking. I
am aware of the problem but do not have a fix at this time.


-- 
Konstantin Olchanski
Physics Department, Brookhaven National Laboratory, Long Island, New York
olchansk@bnl.gov

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