20.01.
Expanded the HDI testing setup to be able to mount wire-bonded HDIs to HDI handles. Tested 12 HDIs (v7.2), all of them passed the tests. HDIs were given to Silvan and are located in the storage box in the assembly lab. They will be used for module production.
21.01.
Tested 4 HDIs, version 7.1. All passed the electrical tests.
Tested 16 v7.2 HDIs. All but one passed the electrical tests.
Glued a protection cap on a pre-production module (M1535).
22.01.
Investigated problems with full qualification setup, narrowed it down to communication between PC and Keithley.
23.01.
Tested 23 HDIs. One failed the test, rest of them passed.
24.01.
Tested 15 HDIs. All of them passed the tests.
Investigated problems with threshold/trim tests in full qualification when going to -20. Suspecting wrong DACs used in the test.
27.01.
Continuing to investigate problems with threshold in trimming procedures. The problem seems to be in the DAC 'ctrlreg' which was set to 17. Setting it to 9 removed the problem for M1529.
28.01.
Confirmed that 'ctrlreg' works also at room +20 degrees. Did reception test on modules 1529, 1536, 1537 and 1538. After this, caps were glued to modules 1537 and 1538. Did fulltest@-20, IV@-20, fullltest@+10 and IV@+10 for modules 1534, 1532, 1529 and 1536.
29.01.
Ran reeption on moules 1539 and 1540. Ran full qualification on modules 1536, 1537, 1538, 1540. Module 1539 turned out to have broken wirebonds on one TBM, reported this to Silvan and he re-bonded it. Assembled a second cap-gluing station. |