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Seismological recorders

Magnetotelluric recorders

Controllers, special units
Digital 4-channel seismological recorder М-К4-SМ26

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The recorder as a part of the bottom seismo station is intended for seismological researches and for the seismology monitoring. The recorder is intended for data acquisition, primary processing and storage in a digital form of information in non-volatile Flash-memory. The analog signals come in from 3 seismic sensors and 1 hidrophone.

Recorder stores data and service information (GPS coordinates, start time, duty information and comments) ) in digital form in Flash-memory in its own format.

Recorders management realized using HOST PC (desk or Notebook IBM PC) OS Windows 2000 or higher) by means of special software through Ethernet cable.

Software for PC provide initial setup of recorder, its testing, uploading data and data preliminary computing and viewing.
After parameter data acquisition has set up recorder ready to data acquisite in on-line or off-line modes.

ПData acquisition management realized by special software during seismic station initialization process.

Before and after data acquisition recorder can receive information from GPS (coordinates and time).

Start of data acquisition in each mode can be carried out on time according to a schedule made beforehand.

Mode data viewing 'Oscilloscope' is realized.


External power supply, V: 6 (- 10..+15%)V or 12(-10..+15%)V.
Все необходимые для работы напряжения преобразуются источниками питания внутри регистратора.
Recorder built-in seismostation saves its work parameters in the next conditions:

  • range of temperature, °С: 0..+40;
  • relative humidity (at 25 °С) not more, then: 95%

Number of channels: 4
Quantisation period Tq, ms: 0,25; 0,5; 1; 2; 4; 8; 16; 32 ms

Frequency band, Hz (at level 3 dB):
  • 0…1280 Hz (for Tq = 0,25ms);
  • 0…640 Hz (for Tq = 0,5ms);
  • 0…320 Hz (for Tq = 1ms);
  • 0…160 Hz (for Tq = 2ms);
  • 0…80 Hz (for Tq = 4ms);
  • 0…40 Hz (for Tq = 8ms);
  • 0…20 Hz (for Tq = 16ms);
  • 0…10 Hz(for Tq = 32ms).

Programmable filter of the low frieqency, Hz: 1-5.
Gains of the seismic channel: 2; 10; 40; 100; 400.
Amplitude identity of the seismic channels: not more then 1%.
Sinfase signal suppression, dB: not less then 70.
Channel weakness, dB: not less then 80.
Data acquisition modes: start-stop or continuous.
Step of the data acquisition duration chadge, s: 1.
Input impedance, kOhm: not less then 5.
Hole dinamic range (in 4-40 Hz band), dB: not less then 130.

Instantaneous dinamic range (in 4 -40 Hz band), dB:
  • for gain = 2 not less then 110 dB;
  • for gain = 10 not less then 110 dB;
  • for gain = 40 not less then 105 dB;
  • for gain = 100 not less then 100 dB.

RMS in general mode: Tq = 8ms, work band 4..40 Hz, mkV :
  • for gain = 2 not less then 1.0;
  • for gain = 10 not less then 0.3;
  • for gain = 40 not less then 0.15;
  • for gain = 100 not less then 0.1;
  • for gain = 400 not less then 0.09.

Frequency stability (on all factors): 10-7.
Interface: Ethernet 10 МBaud (UDP).
Built-in memory, Gbyte: not more then 6.

Power consumption, W:
circuit 12V:
  • in communication mode: not less then 0.6;
  • in sleep mode: not less then 0.2;
  • in acquisition mode: not less then 0.6.

circuit 6V:
  • in communication mode: not less then 0.6;
  • in sleep mode: not less then 0.2;
  • in acquisition mode: not less then 0.6.

Dimentions 250х120х100 mm
Weight 1± 10% kg

TU 4314-026-46928948-2003Seismological recordersСейсмический регистратор М-К4-СМ26-М

«Мастерская Евгения Смирнова»

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