1. UCSB Testing 3 Stereo Modules Tested 1 SS6 Module Tested
2 Grade A
1 Grade A, but has slight problem in calibration injection circuit
1 SS6 Module Tested
Grade A, but had 1 short in sensor and blew a pinhole during HV ramp up at 320 V
With new hybrids all modules:
Have increased noise on sensor edges
More CMN which required further optimization of stand

2. Problem with Calibration Injection
1 chip has slight problem with calibration injection
Missing event or events with 0 data 1% of time
Never seen previously
Causes drips in pulse shape
0’s in pinhole run, which causes channels to be marked as pinholes
Only has shown up on new sensors
1 of 18 chips (UCSB)
1 of 8 chips (Aachen)
Not clear how/if hybrid changes caused this

3. Increased noise edge Changed bias return circuit
Added capacitor to circuit
Causes increase noise on edge of sensors
1.75 vs 1.5 ADC
Caused macro to fail in failure type finding
Increased noise
After changing grounding/stand fixed noise and macros work

4. Irradiation results