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P904 Peak Noise1 
This is the peak noise reading for the transducer. It is measured while the 
transducer is not firing, and gives an indication of the maximum amount of 
electrical noise present on the cabling. 
P905 Sensitivity 
This parameter determines the sensitivity of the unit. Please consult Pulsar 
for  further  information  and  assistance  on  changing  the  value  of  this 
parameter. 
P906 Side Clearance 
This parameter is used to set the distance by which the DATEM trace will 
“stand-off”  from  around  unwanted  echoes  such  as  obstructions.  Please 
consult Pulsar for further information and assistance on changing the value 
of this parameter.