Table 3.
At frequency: | Error Std. (%) | Error mean (%) | |
Amplitude sweep based method (amplitude range 1–2mT) | 20 Hz | 0.139 | 0.128 |
100 Hz | 1.543 | 1.740 | |
200 Hz | 2.180 | 2.216 | |
1000 Hz | 715.702 | 434.720 | |
Frequency ranges: | Error Std. (%) | Error mean (%) | |
Frequency sweep based method (amplitude 50mT) | 290–2100 Hz | 0.364 | 0.093 |
2110–3000 Hz | 0.011 | 0.050 | |
3000–4000 Hz | 0.019 | 0.026 | |
4000–5000 Hz | 0.014 | 0.016 |