i have some issues calbriating the watt gain oft the ade7753 with an accurate source. For current measuring I'm using a current transformer with a turns ratio of 1:13 and a burden resistor with 0.3 ohms. Following the calibration routine described in the datasheet, I was trying to read the LAENERGY register with 230V and 1A applied. The reading is always closed to the default value 16777215 which I get from the register without any power source connected. I read the register for several loads, but the value only changes slightly in the last four digits.
I don't think its a problem with my hardware as reading the LVAENERGY register almost matches the calculated value of lvaenergy_expected. The value also changes properly with different loads.
Has anyone yet experienced a similar problem?
I would be very grateful for any sort of help.