MTU Magnetotellurics
1 kHz to 0.00002 Hz (50 000 seconds)
MTU-A Magnetotellurics and Audio-frequency Magnetotellurics
10 kHz to 0.00002 Hz (50 000 seconds)
Features MTU and MTU-A
Lightweight, portable, rugged
No cable links required
GPS synchronized
10 000 Hz to 0.00002 Hz
24-bit digital resolution
Wide dynamic range
Operable from -20°C to +50°C
Available with 2, 3, or 5 channels per instrument (electric, magnetic, or both)
Unlimited number of channels per system
Summary Specifications
Models & channels
E denotes electric channels; H denotes magnetic channels; A denotes AMT capability:
MTU-2E, MTU-2EA, MTU-3H, MTU-5 (2E + 3H channels), MTU-5A
Frequency range
MTU: 1 kHz to 0.00002 Hz (50 000s) MTU-A: 10 kHz to 0.00002 Hz (50 000s)
Dynamic range
130dB; gain settings variable by factors of 4
Input impedance
>1MΩ
Filtering
Powerline notch filter >40dB plus selectable low pass, high pass, band pass
Data storage
Industrial-grade removable flash memory, 256MB or 512MB (upgradeable)
Setup
Program file on flash memory or USB, parallel, or serial connection to Windows PC
ADC
One per channel, 24 bits. Samples/second:
MTU: 2400 or 3072
MTU-A: 24 000
Timing accuracy
Better than ±500 nanoseconds; oven-controlled crystal oscillator synchronized to GPS
Controls, Indicators
Power switch; bright LED indicates instrument status via flashing sequence
Weight
Approx. 4kg
Dimensions
230mm x 225mm x 110mm environmentally sealed diecast aluminum case
Connectors
Multi-pin, military-style connectors for sensor input, GPS, and battery
Heavy-duty binding posts for electric field inputs and ground
Input power
12V DC from any suitable battery
Power consumption
Approx. 9W
Environmental
Approx. 9W