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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 |
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Last updated: Wednesday, 06-May-2009 14:38:31 PDT
webmaster@emlab.ucsd.edu
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