Estimation of complex electrode impedance to correct for the ECR-effects
Receiving unit NORD
5-channel logger designed for ultra broadband measurement of both electric and magnetic field components.
Induction coils IMS
Low-noise magnetic field sensors produced in 3 modifications: low-frequency, high-frequency and broadband.
Processing software EPI-KIT
Universal tool for magnetotelluric and controlled-source electromagnetic data processing on a commercial scale.
Technical specifications of the receiver:
Number of channels; 5 (2 electric, 3 magnetic)
Measured field components;Ex, Ey, Hx, Hy, Hz
Operational frequency range:<br>32-bit ADC<br>24-bit ADC; <br>DC - 1 kHz <br>5 Hz - 100 kHz<br>
Sampling rate:<br>32-bit ADC<br>24-bit ADC;<br>2400, 150 и 15 Hz<br>312.5 и 78.125 kHz
Input resistance;10 MOhm
Input capacitance;< 0.5 nF
Maximum input signal;E channels: +/- 600 mV<br>Н channels: +/- 2500 mV
Common-mode noise rejection;> 120 dB in the operational freq. range
Internal noise level;∼ 3.5 nV/√Hz
Control and data transfer;Wi-Fi 802.11n
GPS, BeiDou and/or GLONASS positioning accuracy;+/- 1 m when synchronizing with 12 or more satellites
Time synchronization accuracy;+/- 30 ns (standard deviation)
Internal memory type;microSD Industrial Grade with 32 Gb capacity (up to 128 Gb optionally)
Receiver weight;1.8 kg
Power supply voltage;12 V
Ingress protection code;IP-66
Power consumption;6 W - 8.5 W
Temperature range; -40 … + 85 °C
More information about the NORD system could be found here.