Reson Seabat 8101
Reson Seabat 8101 Reson Seabat 8101
System Operationfile (SVP); this function is normally performed in the Bathymetry Data AcquisitionSystem (e.g. 6042).The velocity menu item allows the externally measured speed of sound to be entereddirectly into the 8101 system. The range allowed is from 1350 to 1600 metersper second. If the local sound velocity is not known, a value of 1480 to 1500for open sea areas and 1425 meters/sec for fresh water is recommended. Figure3-4 illustrates typical surface sound velocity at different temperatures and salinity.These curves should be used only as a general guide.NOTEIf a sound velocity probe is interfaced to the Sonar Processor, the VELOCITYvalue will automatically indicate the value from the instrument and cannot bechanged by the operator.Sound velocity (at surface)Velocity (m/sec)1560154015201500148014601440142014000 5 10 15 20 25 30 350 ppt5 ppt10 ppt15 ppt20 ppt25 ppt30 ppt35 pptTemperature (degrees C)Figure 14, Typical Sound Velocity ValuesIMPORTANTA sound velocity value, at the face of the projector, is REQUIRED for best accuracywhen using the Optional Pitch Stabilized Projector. This may be from an installedprobe, from a remote serial input, or direct operator input. Failure toprovide the correct sound velocity will affect beam steering calculations.______________________________________________________________________SeaBat 8101 Operator's Manual 3-8 Version 3.02
System Operation3.6 Display MenuThe display menu is provided to allow the operator to configure the display elementsto suit individual tastes and operating conditions.3.6.1 ColorSix pre-set color schemes are available. The color Palette dictates the colorcodedamplitude values for the sonar wedge area.Low to High amplitude color selections are:Blk-Wht:Black:Dark:Dim:Blu-Yel:Vivid:Continuous Black to WhiteBlack only (very high contrast)Continuous Black to Dark BlueContinuous Dark Blue to Light BlueContinuous Dark Blue to YellowContinuous Dark Blue to Red3.6.2 ContrastThis menu item allows the operator to set the contrast level for the display. Thissetting has no effect on the data itself. Scaling factors available are X1.0, x1.25,x1.5, and x2.0. The higher the number, the greater the contrast. A typical contrastvalue is x1.5.3.6.3 DotsThe Dots menu provides the operator with the option to color-code each soundingdot, depending on various factors. The choices available are:Off:Normal:All:Quality:Process:No dots are displayed.Only soundings with a quality value of 3 are displayed.All dots are white.All soundings are white, regardless of their quality orbottom detection process.Each sounding is displayed based upon the qualityvalue assigned:Gray: Quality 0 - poor colinearity, poor brightnessRed: Quality 1 - poor colinearity, good brightnessGreen: Quality 2 - good colinearity, poor brightnessCyan: Quality 3 - good colinearity, good brightnessEach sounding is color-coded based upon the weightingused in the Magnitude/Phase bottom detectionprocess.Red: Magnitude detectionGreen: Phase detectionCyan: Blended magnitude/phase detection______________________________________________________________________SeaBat 8101 Operator's Manual 3-9 Version 3.02
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System Operationfile (SVP); this function is normally performed in the Bathymetry Data AcquisitionSystem (e.g. 6042).The velocity menu item allows the externally measured speed of sound to be entereddirectly into the <strong>8101</strong> system. The range allowed is from 1350 to 1600 metersper second. If the local sound velocity is not known, a value of 1480 to 1500for open sea areas and 1425 meters/sec for fresh water is recommended. Figure3-4 illustrates typical surface sound velocity at different temperatures and salinity.These curves should be used only as a general guide.NOTEIf a sound velocity probe is interfaced to the Sonar Processor, the VELOCITYvalue will automatically indicate the value from the instrument and cannot bechanged by the operator.Sound velocity (at surface)Velocity (m/sec)1560154015201500148014601440142014000 5 10 15 20 25 30 350 ppt5 ppt10 ppt15 ppt20 ppt25 ppt30 ppt35 pptTemperature (degrees C)Figure 14, Typical Sound Velocity ValuesIMPORTANTA sound velocity value, at the face of the projector, is REQUIRED for best accuracywhen using the Optional Pitch Stabilized Projector. This may be from an installedprobe, from a remote serial input, or direct operator input. Failure toprovide the correct sound velocity will affect beam steering calculations.______________________________________________________________________SeaBat <strong>8101</strong> Operator's Manual 3-8 Version 3.02
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