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Instruments | EM Receiver | Specifications

Seafloor EM Receiver

Channels 8 (MkIII), 4 (MkII)
ADC 24 bit
ADC noise floor 10-13V2/Hz at 0.01 H to nyquist
Power consumption 450 mW (4 channels at 32 Hz sampling)
Maximum sample rate 1,000 Hz on 4 (Mk III) channels or 2 (Mk II)
Time base drift 1 - 5 ms/day, correctable to < 1 ms
E and B amplifiers Chopper-stabilized
Bandwidth 10,000 s to 1,000 Hz
E sensors AgCl electrodes
Voltage noise floor 10-18 V2/Hz at 1 Hz
E-field noise floor on 10m antenna 10-10V/m/sqrt(Hz) at 1 Hz
B sensors Multi-turn, mu-metal core
B noise floor 10-6nT2/Hz at 0.1 Hz
Weight of assembly in air 300 lbs
in water -30 lbs
Endurance on one set of Li batteries 2 months
Data capacity 5 Gbyte (Mk III), 20 Gbyte (Mk II)
Depth rating 6,000 m
Acoustic navigation/release SIO custom or EG&G
Long term loss rate <2% per deployment
Deployments to date >1,000

 

Last updated: Wednesday, 06-May-2009 14:38:31 PDT
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