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User name brads
Log entry time 18:23:56 on October 21, 2009
Entry number 296018
keyword=Added Helicity gate to v792 in FADC Moller DAQ (also photo of VME crate)The Helicity signal was plugged into channel 0 of the v792 ADC in the new Moller setup. This is a redundant indicator of the beam helicity that can be checked against that coming from the FADC unit.
The v792 ADC gate comes 2.3usecs after the Helicity signal transitions (note also that the MPS and Helicity leading edges are coincident in time now). The signal will saturate the adc channel, but that is fine for a boolean on/off input.
Ahmed wanted a photo of the VME crate for reference (Figure 1). Sorry
about the blurry-cam.
A copy of this log entry has been emailed to: brads, zahmed
Figure 1
