1. 9/11/2007JC Wang1 Track Resolution Scale, assume equal  meas for different planes. HP3 HP4 All 6 measurements. Without leftmost one. Without rightmost one.

2. 9/11/2007JC Wang2 Recovery of JC Effect M28R Electronic Channel Raw ADC Readout Electronic Channel Events: 231, 232, 233 Chip 5  Pedestal shift in the whole chip  0.12 Q(in unit of MIPs).  Normal CM suppression can not handle large shift. Hottest events removed from running pedestal calculation. Extra correction to recover hits in the rest of the chip. ADC – Pedestal – CM noise Signal after Extra Correction ~ 50 ADC

3. 9/11/2007JC Wang3 Pedestal & CMS Noise Before After