Instrument · BaseMaster VN-2020
BaseMaster
MAG, DGPS and AERO modes: magnetic base station, differential GNSS correction and two-channel airborne magnetometer.
Processing unit measuring 215×165×55 mm with a mass of 0.6 kg. The magnetic base station, differential GNSS correction and two-channel airborne magnetometer modes operate simultaneously or independently.
Instrument configuration
Switches
BaseMaster operating modes
The MAG ON, DGPS ON and AERO ON switches are on the rear panel. The modes are enabled simultaneously or independently.
MAG ON
Magnetic variations · 0.001 nT · 1–100 Hz · UTC
DGPS ON
Differential GNSS correction · up to 10 Hz · >15 days
AERO ON
Two-channel airborne magnetometer · 0.001 nT
Variation correction
Correction for temporal variations of the magnetic field
The airborne magnetometer records spatial changes in the field together with its temporal variations. The base station record for the same interval is used to correct for the temporal variations. Data from both instruments are synchronised to UTC.
Operating conditions and recording duration
Operating temperature −40…+50 °C, frost-resistant OLED 256×64. With 4 GB flash memory: more than 20 months of continuous recording at a 1 Hz cycle and more than 2 months at 10 Hz.
−40…+50 °C
Operating temperature range. Frost-resistant 2.8″ OLED, 256×64.
More than 20 months
4 GB flash at 1 Hz. At 10 Hz, more than 2 months.
0.6 kg · 215×165×55 mm
Processing unit. Sensor up to 80 m, antenna up to 25 m.
Specifications
Magnetic base station
MAG ON mode.
| Parameter | Value |
|---|---|
| range (ISAT/Scintrex) | 15 000–100 000 nT |
| range (POS-1) | 20 000–100 000 nT |
| resolution | 0.001 nT |
| measurement cycle | 1–100 Hz |
| time reference | UTC (GMT) |
| current with ISAT/Scintrex | 3 A |
| current with POS-1 | 0.3 A |
| current without sensor | 0.1 A |
| consumption (2 channels) | 6 A |
| sensor cable | up to 80 m, 50 m supplied |
Specifications
Differential GNSS correction
DGPS ON mode.
| Parameter | Value |
|---|---|
| cycle | up to 10 Hz |
| current with receiver | 0.25 A |
| current without receiver | 0.1 A |
| recording at 10 Hz | more than 15 days |
| external antenna | up to 25 m, 15 m supplied |
Specifications
Two-channel airborne magnetometer
AERO ON mode.
| Parameter | Value |
|---|---|
| quantum sensors | 15 000–100 000 nT |
| quantum sensor resolution | 0.001 nT |
| fluxgate | ±125 000 nT |
| fluxgate resolution | less than 0.150 nT |
Specifications
Housing and power
Common to all modes. Compatibility: quantum sensors with Larmor frequency output, POS-1, Smagall HSF and SENSYS FGM3D fluxgates.
| Parameter | Value |
|---|---|
| unit dimensions | 215×165×55 mm |
| unit mass | 0.6 kg |
| power supply | 11.5–36 V DC |
| display | frost-resistant OLED 256×64, 2.8″ |
| operating temperature | −40…+50 °C |
| recording | 4 GB flash · >20 months at 1 Hz · >2 months at 10 Hz |
| communication | RS-232 |
M series
BaseMaster M — international version
Version with an English-language interface. Operating modes and specifications are the same as for BaseMaster.
