Equipment & Software for Geophysical Surveys: Design, Manufacture, Support, Supply

DAQlink 4 seismic station for surveys and monitoring

Main features:
  • All types of surveys, including monitoring, and passive MASW
  • Easy station pooling
  • Stand-alone recording
  • Remote operation via Wi-Fi, GSM, GbE
  • Built-in GPS
Price : on request
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DAQlink-4 is a portable inline seismic station that provides seismic surveys with any methods on land, in boreholes and in the water area. The possibility of continuous data recording allows using the station as a stand-alone recording system for seismic monitoring or passive MASW.

The number of channels in one recorder could be 6, 12, 24 or 48, but the system configuration allows increasing their number by linking the stations through cable lines up to 3 km long, which are used for time synchronization in the modules and data exchange between them. When using the seismic station as a stand-alone recorder, time synchronization of the units is carried out through a GPS receiver, and in the case of operation in mines and tunnels it is maintained through a built-in clock or with the help of a VHF radio modem.

Features of DAQlink-4:
  • Ability to link seismic stations in a single array using twisted-pair cable (length up to 3 km), Ethernet, Wi-Fi or GSM modems
  • Any recording duration up to continuous recording
  • Wide bandwidth of the recorded signal: 0 to 20,000 Hz
  • Capable of remote control, setup, registration and data downloading via Wi-Fi, Gigabit Ethernet or cellular connection. Built-in FTP server
  • VHF / UHF radio or twisted pair wired synchronization (up to 3km) for use in mines
  • Continuous recording with GPS time synchronization
  • Multiple trigger options for recording: by source trigger sensor signal, LTA (Long Term Average) and STA (Short Term Average) event, TTL pulse and others. Even email notification if an expected LTA or STA event is detected
  • Data registration for all kinds of sources. Supports Force 3 controllers
  • Built-in 16 GB memory for stand-alone data recording and flash drive connection for data backup and transfer
  • Built-in tools for testing seismic stations (distortion factor, mutual interference between the channels, phase suppression, inherent noise level) and geophones (impedance, frequency, attenuation, sensitivity)
  • Data can be stored in the formats SEG-2, SEG-D, SEG-Y, ASCII or MiniSEED

Several seismic stations can be linked together into a single recording array using different wired or wireless interfaces. There are so many ways to connect that only a few of them are listed here.

Several DAQLink 4 can also work in a fully stand-alone mode without a network connection or connected computers. The data are recorded on the built-in memory of GPS-synchronized seismic stations and can be downloaded after the work is completed. CSP seismograms are created later using the Harvest software.

DAQlink with two directional Wi-Fi antennas
DAQlink with two directional Wi-Fi antennas
Work with vibrators or pulse sources. Nodal shooting.
Standard version with top panel connectors
Standard version with top panel connectors

The side placement of the connectors is convenient for linking the stations into a single array.

In addition to the DAQlink 4 seismic station the following items can be purchased:
  • Seismic cables
  • Seismic receivers
  • Sources
  • Synchronization systems
  • Computer software

Number of channels in one station

6, 12, 24, or 48

ADC capacity

24, Σ-Δ bits

Dynamic range

124 dB (@ 500 Hz)

Preamplifier gain

×1 (0 dB), ×4 (12 dB), ×16 (24 dB)

Sample rate

125; 250; 500; 1000; 2000; 4000; 8000; 16000; 32000; 64000 Hz

Frequency range

0 ÷ 20 000 Hz

Anti-aliasing filter

85% of Nyquist frequency

High Pass Filter

0.001 ÷ 120 Hz, adjustable

Filter type


Trigger accuracy

±1 (@ 500 Hz) μs

Maximum input signal with minimum gain

±3.7 V

The level of inherent noise of the registering channel

< 0.2 µV (@ 500 Hz)

Non-linear distortion coefficient

0.00008 % (@ 500 Hz)

Mutual interference between channels

-125 dB

Common mode suppression factor

100 dB (@ 500 Hz)

Power consumption

0.13 W/channel

Input impedance


Time synchronization

GNSS receiver or VHF radio

Data storage capacity (16 Gb CF internal memory)

120 hours (24 channels @ 500 Hz, 16 Gb)

Maximum external memory capacity (Ethernet or USB)


Data format



Ethernet, battery status, and operating mode


10 – 28 V DC

Temperature range

-40 ÷ +85 °C

Operating humidity

0 ÷ 100 %


245х340х75 mm


3.135 kg