Table 1 Main specifications of the magnetometer systems for the prototype model and the standard model, which are distinguished by the type of the control board

Acceptable power source voltage

2.7–15 V

2.4–25 V

Time synchronization accuracy

0.1 ms

0.1 ms

Magnetic field (3 axes)

 Dynamic range

± 60,000 nT

± 60,000 nT

 Accuracy (noise floor σ)

< 0.12 nT

< 0.06 nT

 Bit depth

24 bits

24 bits

 Sampling frequency

< 5 Hz^a

< 5 Hz^a

Tilt (3 axes)

 Accuracy

0.1°

0.1°

 Bit depth

16 bits

16 bits

 Sampling frequency

< 1 Hz

< 1 Hz

Temperature

 Dynamic range

− 40 to + 125 °C

− 40 to + 125 °C

 Accuracy

< 0.5 °C

< 0.5 °C

 Bit depth

12 bits

12 bits

 Sampling frequency

< 1 Hz

< 1 Hz

Battery voltage

 Accuracy

5 mV

5 mV

 Bit depth

16 bits

16 bits

 Sampling frequency

< 1 Hz

< 1 Hz

Power consumption @3.8 V input

Typ. 36 mW

Typ. 33 mW

Power consumption @7.0 V input

Typ. 36 mW

Typ. 36 mW

System size (without batteries)

33 × 35 × 293 mm

Φ35 × 180 mm

Operating lifetime

> 2 years

> 2 years