Re: BRAHVO gray-colored channels

From: Konstantin Olchanski (olchansk@ux1.phy.bnl.gov)
Date: Tue Aug 01 2000 - 21:30:35 EDT

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    Correction: after the tripped channels are reset, BRAHVO will not
    reset the mainframe status until the detector window is closed
    and reopened.
    
    
    K.O.
    
    
    
    On Tue, Aug 01, 2000 at 09:22:53PM -0400, Konstantin Olchanski wrote:
    > 
    > 
    > An explanation for unusual BRAHVO behaviour:
    > 
    > When channels trip on a L4032 high voltage mainframe, instead of showing
    > them as "red", BRAHVO reports the mainframe status "error" or "unknown"
    > and show all channels of that mainframe in gray colour, whether they
    > are good or bad.
    > 
    > When this happens, look at all channels for a detector, find those that
    > tripped (the actual voltages will be zero) and reset them.
    > 
    > To reset the tripped voltages, manually set the demand voltage to zero,
    > (both demand and actual voltages should become zero), then set
    > it back to the "desired" voltage (both demand and actual voltages should
    > become same as the desired voltage).
    > 
    > After the last tripped channel is reset, the mainframe status should
    > change to "on" and all channels should become "green".
    > 
    > 
    > -- 
    > Konstantin Olchanski
    > Physics Department, Brookhaven National Laboratory, Long Island, New York
    > olchansk@bnl.gov
    
    -- 
    Konstantin Olchanski
    Physics Department, Brookhaven National Laboratory, Long Island, New York
    olchansk@bnl.gov
    



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