udated 12-07-03 00:20 
#Hook NA cfd outputs to scalers.
     For each setting take 10 mn of data :
     #nominal threshold :  40,30,20,10,5,15,25,35 uA beam
     #threshold=0.75 *threshold : 40,30,20,10 uA 
	(0.75 need to be confirmed  by Angela)

     # This test cannot be done this night because it has not been arranged 
	with MCC yet : skip
	using diode beam and nominal threshold repeat the scan 
     !!! attention !!! this require a special beam, need to be
	 coordinated with MCC before hand, contact RC before
	 requesting that to MCC.

 
#un-hook NA cfd output from scalers (all runs with no fastclear on fastbus)
     #take 45 mn runs at 4 different current 
     #take 1 hour run with some of the cfd delays set at 8ns instead of 10 ns
	(to check that the timing resolution is not worst with the delay of 10
	instead of 8ns)
     #take 1 hour of  proton gain *5 with the same threshold to measure single
      rates. request no more than 8 uA beam.  
     (HV file = HV.halfgain_time_five_2nd_engineering_run_2nd_iter_alloct_a.hvc)
     if you have trouble with the french tube tripping in over current, consider
     turning them off for this test
     do not forget to reload the normal gain HV.
     (HV file = HV.halfgain_2nd_engineering_run_2nd_iter_alloct_a.hvc) at 
     the end of this test