Invertor | Mode | Pedestal/Noise Run | I/V scan | Pipeline Scan | Gain Scans | LED tests | Backplane Pulsing |
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Off | Peak | Noise(ps), Pedestal(ps), root | |||||
On | Peak | Noise(ps), Pedestal(ps), root | |
Gain fits 0-3 MIP(ps) Gain scan examples(ps) 0 Mip (root), 0.5 Mip (root) 1 Mip (root), 1.5 Mip (root) 2 Mip (root), 2.5 Mip (root) 3.0 Mip (root) |
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On | Deconvolution | Noise(ps), Pedestal(ps) |
First 6 strips only have one sensor connected. The wings at the edge of the chips only occur at specific columns in the pipeline scan (Columns 13-20). As this is true on all 4 chips, the wings must be either pickup from a command signal or change in state of system (chip synch signal, PC controller, etc.). The effect have been seen on hybrids+PA at CERN and modules at Aachen. Always in the set of columns (13-20) or (37-44). Gain scan has a bad chi-squared for many channels when the zero MIP point is included. Excluding the zero point, the fit improves greatly, and the chi-squared probability is flat.