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User name silwal
Log entry time 16:20:06 on November 2,2009
Entry number 297177
keyword=HallA FFB pause ECL signal polarity needs to be checked
The hallA FFB pause ECL cable between the CH flexio board and ECL/NIM module
was loose or came loose during helicity/MPS polarity check in the counting
house. I plugged the ECL cable back into the ECL/NIM module. But I have not
verified that the polarity of the FFB pause signal is correct since the
Modulation is turned off (no channel access allowed right now from MCC), and I
cant turn the dithering magnets on. The FFB pause needs to be tested. If it is
not working then the polarity of the FFB pause ECL cable needs to be reversed.