Main features:

• module construction;

• 3 components measurements of both magnetic and electric fields;

• 2 types of magnetometers (flux-gate, search-coil or both );

• wide frequency range (0 - 10000) Hz;

• excellent temperature stability.

ECHO-EM is intended for measurement of a complete vector and three components of both electric and magnetic fields, and transfers the received data to the block of the processing of the information and also in telemetry.

1. Flux-gate magnetometer:

· full measuring range - ±75000 nT;

· frequency band - (0-20) Hz;

· resolution in frequency band (0.01-20) Hz - 0.2 nT;

· drift of zero of the magnetic channel in 24 hours - 3 nT;

· quantity of channels of measurement of each component:

- analog 2 Hz;

- digital 0.1-20 Hz;

- digital 2 Hz.

2. Search-coil magnetometer:

· frequency band (0.01- 10000) Hz;

· noise level in frequency band 5000 Hz less then 5*10E-6 nT/(Hz)1/2;

· quantity of channels of measurement of each component:

- analog 20 Hz;

- digital -20 Hz;

- digital -10000 Hz;

- digital (20 - 200) Hz;

- digital (200 - 500) Hz;

- digital (500 - 1000) Hz;

- digital (1000 - 2500) Hz;

- digital (2500 - 10000) Hz.

2. Electric field meter:

· Frequency bands (0.1-10000) Hz;

· noise level in frequency band 1000 Hz less then 0.1 mkV/(Hz)1/2;

· quantity of channels of measurement of each component:

- analog 20 Hz;

- digital -20 Hz;

- digital -10000 Hz;

- digital (20 - 200) Hz;

- digital (200 - 500) Hz;

- digital (500 - 1000) Hz;

- digital (1000 - 2500) Hz;

- digital (2500 - 10000) Hz.

4. Power supplies - +27 V.

5. Power consumption of the full complex, less than 10 W.

6. Dimensions and weight of components of a complex:

· Flux-gate magnetometer:

- dimensions – diam. 45 x 102 mm;

- weight 0.4 kg;

· search-coil magnetometer sensor:

- dimensions diam. 45 x 380 mm;

- weight 0.3-3 kg;

· electrical field sensor:

- dimensions - diam. 100x50 mm;

- weight - 0.2-6 kg;

· block of electronics:

- dimensions 282x262x181 mm;

- weight 4 kg.