On 29th of October, an issue with DTB_WWVASW was noticed when trying to run FullQualification on 4 modules at the same time. On a tested, working module, setting Vana works but taking tornado plots (setvthrcomp) doesn't as well as other tests. Curiously enough, after switching the DTB with the one used for HDI testing (DTB_WRN13L) the problem was still there. This lead us to believe that the problem was with cables or ground. All cables and the adapter were tested and shown to be working fine. This is when we took a third DTB, put it in the same plae as previously WWVASW and WRN13L, connected all the cables and then the tests worked.
Conclusion of the tests is that DTB_WWVASW and DTB_WRN13L are suffering from the same failure mode. It was not noticed before on the WRN13L because it does not affect the HDI tests. This leaves us with 3 working DTBs for the FUllQualification tests. |