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Model DAQlink 5 - High Resolution ...

Model DAQlink 5 -High Resolution Seismic Recording System

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DAQlink-5 is a portable inline seismic seismograph 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 seismograph 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 seismographs 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 seismograph 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.

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seismic monitoring

land seismic system

mining and tunneling

seismic monitoring system

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

Ability to link seismographs 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 seismographs (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

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: linear-phase

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: 100 kOhm

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): unlimited

Data format: SEG-2, SEG-D, SEG-Y, ASCII, MiniSEED

LEDs: Ethernet, battery status, and operating mode

Power: 10 – 28 V DC

Temperature range: -40 ÷ +85 °C

Operating humidity: 0 ÷ 100 %

Dimensions: 245?340?75 mm

Weight: 3.135 kg