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Power Module Superior array fidelity requires clean power. Each hydrophone group of the MAI Trout array has its own precision regulated bipolar power supply. This prevents noise on the main array power lines from reaching the sensitive signal conditioning electronics while helping to isolate groups from each other. |
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Preamplifier MAI's ultra low noise preamplifier accepts up to 4 hydrophone (or other sensor) branches in single-ended or true-differential mode. Driven calibration inputs are also provided. Gain is set by a single resistor during assembly. Low cut and high cut filtering are standard, as is pseudo-differential output. |
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Summing Network/Line Driver The summing network/line driver circuit board designed by MAI accommodates up to 8 channels (differential) or 16 channels (single-ended), separately weighted inputs. A wide variety of filtering and prewhitening is available by the selection of a few components. Outputs are true-differential and capable of driving twisted pair data bearers in excess of one kilometre with negligible distortion. The use of this flexible module makes the provision of overlapping shaded groups in geophysical arrays straightforward. |
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Geophysical Receiver Boards MAI's geophysical array receiver boards provide a host of features:
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Shown here undergoing test and inspection after a burn-in period on the electronics lab test bench, twenty-four channels of geophysical receiver boards draw less than 400 mA per side from a bipolar power supply. |
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