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    User name YANG

    Log entry time 11:22:40 on July 25, 2014

    Entry number 1447

    keyword=RFPP and RVDC plots

    For FPP, 1) We replaced the fuse for U plane M10, the signals of U_M10 modules are good now. 2) The noisy wires of V_plane disappear, is it possible because we set the HV 1800V instead of 1850V? 3) The U1_M11 keeps missing. We switched the signal cables of U1 and U2 plane, but the missing wires on the plot stay in the same position. So there is a problem of the signal cable, not the read-out card. 4) The U3_M5_B_Subgroup keeps missing.We switched the signal cables of U3 and U2 plane, and the missing wires on the plot move to U2 plane. So there is a problem on the read-out card, perhaps the connector on the card is not working well.

    For VDC, The new plots after we fixed the fan keep the same as before. We will continue with the next step as suggested.



    A copy of this log entry has been emailed to: bogdanw, shahinya, mongi



    Figure 1

    RFPP_20481.pdf

    Figure 2