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If there is interference, deselect Enable Gates until the interference has passed. GateTracâ„¢ requires that the data be without noise or interference.The gates can be changed manually or the user can turn on GateTracâ„¢, and Sonic Control will automatically set Depth or Depth and Slope based on a percentage of the nadir depth. The R2Sonic MBES have gates that can be set for a minimum depth, maximum depth and the seabed slope.This means if you set the gates and they block out the bottom, that data will be lost. Gates are Enabled or Disabled using the check the box in front of Enable Gates.Gates are used to keep noise or interference out of the bottom detection process.