I'm having a problem with the actgual read out of the ammeter on the panel when I ger a current reading on my digital ammeter and the read out at EOCR is not the same I bought the unit with external CT 100:5 and the mode setting is is also 100 but I' getting a higher reading on EOCR. the Actual read out from my clamp ammeter is 3.5 A at EOCR is 8.5 A how can I adjust the EOCR-FM420 span to match the reading with our clamp ammeter. Thank you very much and I'm looking forward of your reply as soonest possible. Very truly yours, Danny Penalosa