Table 1 Basic parameters of MGF for Arase (ERG)

Data sampling

Dynamic range (nT)

± 8000 nT/± 60,000 nT

Digital resolution (pT)

15/114 (20 bits)

Original sampling frequency (Hz)

256

Accuracy (RT)

Sensitivity

< 0.06% (± 8000 nT range)

< 0.10% (± 60,000 nT range)

Orthogonality (°)

< 0.1

Accuracy (− 20 to 30 °C)

Sensitivity change from RT

0.016% (± 8000 nT range)

Offset (nT)

< 2nT (± 8000 nT range)

Weight

Sensor (g)

120

Electronics (g)

2780

Dimension

Sensor (mm)

71 × 58 × 41H

Electronics (mm)

334 × 121 × 203H

Power consumption

+ 3.3 V

932 mA (nominal)

+ 7 V

357 mA (nominal)

− 7 V

130 mA (nominal)