Category: Hardware
Product Number: ADE9000
Hello,
We are currently working on an energy transducer.
The ADE9000 data sheet mentions a resolution of 0.001 Hz at 50 Hz, , while tests on our final product shows measerments above 10mHz of absolute error:
| input FREQ | Measured FREQ | Aboslute error | Relative Error |
| 45,000 Hz | 45,016 Hz | 15,700 mHz | 0,035% |
| 46,111 Hz | 46,122 Hz | 11,100 mHz | 0,024% |
| 47,222 Hz | 47,231 Hz | 9,300 mHz | 0,020% |
| 48,333 Hz | 48,343 Hz | 10,400 mHz | 0,021% |
| 49,444 Hz | 49,456 Hz | 11,800 mHz | 0,024% |
| 50,555 Hz | 50,569 Hz | 14,200 mHz | 0,028% |
| 51,666 Hz | 51,682 Hz | 16,400 mHz | 0,032% |
| 52,777 Hz | 52,794 Hz | 17,400 mHz | 0,033% |
| 53,888 Hz | 53,905 Hz | 17,400 mHz | 0,032% |
| 54,999 Hz | 55,014 Hz | 14,700 mHz | 0,027% |
These results are confirmed in many products, so we can see what looks like an offset in the frequency measurement, do you have any explanation for this?
Thanks
