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    User name V. Sulkosky

    Log entry time 19:37:08 on May 12, 2008

    Entry number 237896

    keyword=RF Signal Added to L-HRS DAQ

    I have re-added the RF time signal to the L-HRS DAQ. The beam RF signal
    arrives at the L-HRS and goes into the RF Gated Prescale module that
    prescales the signal by a factor of 40. The two RF gated NIM outputs
    then go to a LeCroy 4616 to convert from NIM to ECL. These signals go
    to ROC4 and plug into channels 62 and 63 of the 1875 TDC in slot # 25.

    The first output is first delayed by about 80 ns compared to the second
    output. This is to guarantee that at least one of the pulses is in the
    TDC window. The delayed output goes in channel 63 and the other output
    goes into channel 62.

    I need to check to make sure the signals is actually in the datastream.

    A copy of this log entry has been emailed to: camsonne@jlab.org,rom@jlab.org