VMR Magnetoresistive Vector Magnetometer

VMR is a convenient and cost effective means for measuring the vector magnetic field. It is particularly useful for measurements with nanotesla precision, and while it has excellent stability it does not feature high accuracy. Due to its low drift, reliable sub-nT resolution is achievable with averaging or using the built-in filters. It may be used to compensate for heading errors in precision optical magnetometers. Multiple sensors can be synchronized using synchronization units such as SYNC4 and SYNC7.

Features

• 3 axis magnetoresistive sensor
• Sensitivity: 300 pT/Hz^1/2
• Bandwidth > 200 Hz (limited only by serial data rate)
• Field range: ±1 G (nonlinear to ±2 G)
• 200 Hz simultaneous sampling
• Gyroscope and accelerometer (MEMS)
• Barometric pressure sensor (MEMS)
  • 0.2 m altitude resolution
• Power: 450 mW, 5-15 V input
• Volume: 16×16×87 mm³
• Mass: 40 g

Interface

• Serial data output
  • RJ-45 8p8c connector: Power, LVDS Serial, LVDS Sync Clock
  • USB-C (FTDI) adapter standard
• Software support
  • VMR command reference
  • Twinleaf I/O tools
  • VM Monitor.exe (Compiled Windows Labview 2020); Requires LV2020 64bit Runtime and NI VISA

Performance

Firmware

Firmware update:

• R12: 2021-05-04-fc17a6 minor synchronization reliability improvements specific to R12.
• R11: 2019-12-10-6923ecchanges default output data rate to 20 Hz.

Ordering

VMR, $1289.