30 RAYDATA Installation and Operation HandbookMenu Options Factory NewDefault DefaultSimulator ON OFF OFFOFFSpeed Mode REPEATER MASTERMASTERDepth Mode REPEATER MASTERMASTERMost of the menus and options are self-explanatory. The followingsubsections provide further information about the remainder.Depth OffsetWithout a depth offset, the depth value displayed on the RayData willbe the distance from the transducer to the bottom. You can adjust theoffset value to give the depth from either of the following:• Keel: Reduce the depth offset value to set it to the distance betweenthe transducer and the keel, as a negative value• Waterline: Increase the depth offset value to set it to the distancebetween the waterline and the transducer, as a positive valueThe Depth page displays an indication of the type of offset (Keel,Waterline or Transducer) based on whether you set a negative orpositive value here, or leave the value set to zero.Note: If you have just changed the depth units in the previous setuppage, the units for the depth offset calibration will not be updated untilyou have left the Setup Chapter and then reselected it.When you adjust the depth offset, the maximum value (positive ornegative) and the resolution you can enter depends on the depth units,as follows:Units Maximum ResolutionFeet 10.0 0.1Metres 3.0 0.1Fathoms 2.0 0.1
