DAQlink5

24-Channel Seismograph

	Operation Modes:
	Record Active-Source Data
	Use with a sledgehammer and hammer switch source for lightweight and fast crew
	Use with a vibrator and controller to acquire data in noisy and/or difficult situations
	Network a computer to monitor the acquisition quality control data, and store shot records
	Record Passive Data
	True Continuous Recording
	Use Cellular Modem for Remote Data Collection
	Works with surface or downhole sensors
	Use for Event Detection & Monitoring
	Continuously record and store data
	Use LTA/STA Tolerance (Long Term Average / Short Term Average) to detect events
	Includes automatic email notifications as events are located

Small Crews

Stacking DAQlink 5-24 Units

The DAQlink 5-24 seismograph is designed to be stacked into 48-channel (and more) systems. Simply buckle the individual units together and connect the cables.
The DAQlink 5-24 features network system timing, so a single GPS module can synchronize all the modules in a stack of DAQlink 5-24 units, increasing overall timing precision.
The entire system is connected to a computer which controls the seismograph network and stores the acquired seismic data. This computer can also simultaneously provide Quality Control as data is being acquired. Using supplied software, seismic data can be stored in Raw (*.dat), SEG‑2 (*.sg2), SEG‑D (*.sgd), SEG-Y (*.sgy), ASCII (*.csv), or MiniSEED formats.

For Large Projects

Link Units Together
For Larger Systems

Distributed DAQlink 5-24

A/D Conversion:

24-bit, high-speed, delta-sigma converters

Typical Dynamic Range:

Greater than 124 dB (measured @ 500 sps)

Crossfeed:

Better than 124 dB (measured @ 500 sps)

Common Mode Rejection:

Better than 100 dB (measured @ 500 sps)

Total Harmonic Distortion

Better than 0.00008% (measured @ 500 sps)

Typical Noise Floor:

0.15 mV RMS (measured @ 500 sps)

Bandwidth:

0 to 27 KHz (unfiltered)

Preamp Gain (User Selectable):

x1 (0 dB), x4 (12 dB), x16 (24 dB), x256 (48 dB)

Maximum Input Signal:

x1 gain - 6.5 Volts peak to peak

Input Impedance:

100k Ohms

Digital Filter (User Selectable):

Low-Cut Filter - Disabled, 0.001-120 Hz

Filter Type - Linear or Minimum Phase

Anti-Alias Filter:

85% of the Nyquist frequency

Sampling Interval::

0.016, 0.032, 0.0625, 0.125, 0.250, 0.500, 1.0, 2.0, 4.0, 8.0, & 16.0 milliseconds

Sampling Rate::

64,000; 32,000; 16,000; 8000; 4000; 2000; 1000; 500; 250; 125; & 62.5 sps

Record Length:

Unlimited (with Continuous Recording)

Record Modes:

DAQlink (Triggered by External Event)

Sigma (Continuous Recording)

Trigger Accuracy::

±1 microsecond at any sampling frequency

Pre-Trigger Delay:

Up to 32 seconds

Post-Trigger Delay:

Up to 100 seconds

Internal Network:

Twin 100-BaseT Ethernet Chips

Supports PTP clock synchronization between systems

Includes real-time data transfer

Internal CF-Card Memory:

16 Gbytes Standard (can be expanded)

GPS Interface Standard

Internal Clock synchronized to GPS time

GPS Time and Position saved with data

Optional External Removable Memory:

32 Gbytes (can be expanded)

Power Consumption (per 24 channels):

Less than 0.13 watts/channel

Power Requirements:

11 to 28 VDC

Included Tests:

Internal tests for verification of the instrument and the geophone spread

Dimensions (standard version):

Size: ..... 280 x 246 x 56 mm (11.0 x 9.7 x 2.2 inches)

Weight: .............. 2.0 kg (4.4 pounds)

Operating Temperature:

-40° to 80° C

Case:

Sturdy Milled Aluminum

Weatherproof seal - IP67

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