[TenTec] Tentec Centurion meter adjustment document?

[Floyd Sense]

A while back, I ran across some online documentation describing the 
procedure that Tentec technicians used to calibrate the Centurion 
meters.  I failed to print it out at the time, and now can't locate it 
again.  Can anyone point me to that document?  My memory is sketchy on 
this, but as I recall the document instructed the technician to apply a 
specific DC voltage to the various pins on the Display Board and to 
adjust the 5 pots on the board for specific meter readings at those 
voltages.

73, Floyd - K8AC