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Marine Exploration

OBX-110

Seabed OBX-110 Ocean Bottom Recorder

PRODUCT DETAILS

The OBX-110 is designed for extended-duration seabed ocean bottom seismic data acquisition. Nodes can be deployed in depths exceeding 3,400 meters with continuous recording for up to 110 days.

FEATURES

  • Continuous, cable-free 4C autonomous recording
  • Battery module: 110 days operation
  • Built-in, full-resolution test generator
  • Solid-state flash memory: 16 GB per channel
  • CSAC clock
  • Internal Heading Sensor 3 Component Magnetic Sensor
  • +5º Accuracy
  • Measurements written to header every 2,000 samples
obx-110

MECHANICAL SPECIFICATIONS (Housing)

Length 500 mm 19.7 in.
Width 215 mm 8.48 in.
Height 111 mm 4.38 in.
Weight in Air 17.0 kg 37.5 lbs.
Weight in Seawater 9.9 kg 21.8 lbs.
Maximum Operating Pressure 34.5 MPa/345 Bar 5,000 psi
Maximum Operating Depth 3,450 M 11,316 ft.
Operating Temperature Range –5°C to +35°C +23°F to +95°F
Storage Temperature Range –10°C to +40°C +14°F to +104°F

ELECTRICAL SPECIFICATIONS

Digitized 4C Recording Station 4 Channel, 24 Bit A/D Digitizer 3C Orthogonal oriented GS-One OMNI 15 Hz
Geophones 1 DEEPENDER Hydrophone
Digitization 24-bit Delta-Sigma
Sample Interval 0.25, 0.5, 1, 2, 4 ms
Pre-amplifier Gains 0, 6, 12, 18, 24, 30, 36 dB
Maximum Input Signal 1.8 Vrms
Equivalent Input noise (@2ms sample interval) 0.17 μVrms
Gain Accuracy Better than 1%
Anti-alias Filter 83% Nyquist
Instantaneous Dynamic Range 124dB @ 2 ms sample interval
THD <0.2%
Distance Between Digitizer & Farthest Sensor <18 cm
Distance Between All Sensors <13 cm
Flash Memory 32 GB per channel
Frequency Response 1 Hz – 1650 Hz @ ¼ ms sample interval
Battery Module 110 days operation

CLOCK SPECIFICATIONS

Days 30 60 90 100
Max Uncorrected Drift 2ms 8ms 17ms 21ms
Corrected Drift <.25ms <.5ms 1ms 1ms

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