Blade board for stability studies of the slow-control functionality of the CMS muon DT uTCA backend

In recent years, a few cases of minor malfunctions were observed during the operation of the CMS Muon DT specific TM7 boards. The TM7 name stays for the basic hardware platform of data and trigger concentrators for the DT chambers. TM7 boards reside in the back-end crates, which are based on the Micro Telecommunications Computing Architecture (uTCA). This document focuses on a recently developed test board, which is used as a cost effective substitution of the TM7. The test board implements a Module Management Controller (MMC) and some further functional aspects of the TM7. It makes extensive tests for observing operational stability of many TM7-alike blade boards within one uTCA crate possible. An overview of the developed test board is given. Some user experience related to our stability studies and workarounds is covered as well.