Products
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High Resolution Seismic Recording System |
with High Speed, Compact Size & Low Power |
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DAQlink4 24 Channel Seismograph
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Multiple Node System Downhole Data Acquisition
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Includes VibraScope Software: |
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DAQlink4 Features and Specifications: |
Technical Features: |
A/D Conversion: |
24-bit, high-speed, delta-sigma converters |
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Dynamic Range: |
Greater than 125 dB (measured @ 500 sps) |
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Crossfeed: |
Better than 125 dB (measured @ 500 sps) |
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Common Mode Rejection: |
Better than 100 dB (measured @ 500 sps) |
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Total Harmonic Distortion |
Better than 0.00006% (measured @ 500 sps) |
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Noise Floor: |
0.15 mV RMS (measured @ 500 sps) |
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Bandwidth: |
0 to 32 KHz (unfiltered) |
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Preamp Gain (User Selectable): |
x1 (0 dB), x4 (12 dB) & x16 (24 dB) |
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Maximum Input Signal: |
x1 gain - 6.5 Volts peak to peak |
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Input Impedance: |
100k Ohms |
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Digital Filter (User Selectable): |
Low-Cut Filter - Disabled, 0.001-120 Hz Filter Type - Linear or Minimum Phase |
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Anti-Alias Filter: |
85% of the Nyquist frequency |
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Sampling Interval:: |
0.0156, 0.0313, 0.0625, 0.125, 0.250, 0.500, 1.00, 2.00, 4.00, & 8.00 milliseconds |
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Sampling Rate:: |
64,000, 32,000; 16,000, 8000, 4000, 2000, 1000, 500, 250, & 125 sps |
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Record Length: |
Unlimited (with Continuous Recording) |
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Record Modes: |
DAQlink (Triggered by External Event) Sigma (Continuous Recording) |
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Trigger Accuracy:: |
±1 microsecond at any sampling frequency |
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Pre-Trigger Delay: |
Up to 32 seconds |
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Post-Trigger Delay: |
Up to 100 seconds |
Physical features: |
Internal Network: |
100-BaseT Ethernet Includes real-time data transfer |
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Internal CF-Card Memory: |
16 Gbytes Standard (can be expanded) |
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GPS Interface Standard |
Internal Clock synchronized to GPS time GPS Time and Position saved with data |
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Optional External Removable Memory: |
32 Gbytes (can be expanded) |
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Power Consumption (24 channels): |
Less than 0.12 watts/channel |
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Power Requirements: |
9 to 27 VDC |
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Included Tests: |
Internal tests for verification of the instrument and the geophone spread |
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Dimensions: |
Dimensions: ..... 280 x 246 x 56 mm (11.0 x 9.7 x 2.2 inches) Weight: .............. 2.0 kg (4.4 pounds) |
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Operating Temperature: |
-40° to 85° C |
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Case: |
Sturdy Milled Aluminum Weatherproof seal - IP67 |
A complete DAQlink 4 Field System typically includes the following: |
1 ... DAQlink 4 Seismograph |
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1 ... ........ Power Cable |
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1 ... ........ Ethernet Data Cable |
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1 ... ........ Trigger Port Cable |
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1 ... Hammer Switch with Extender Cable |
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1 ... “Y” Cable (for connecting to spread) |
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2 ... 12 Channel Spread Cables |
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24. Geophones (customer selects frequencies) |
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12V Battery (customer provided) |
Downloads: |
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Download DAQLink 4 Brochure | |
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Download DAQLink 4 Marine Acquisition Brochure | |
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Download DAQLink 4 MASW Brochure |