Kongsberg Simrad TV80, Справочное руководство

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Calibrating catch monitoring measurements
Topics
Calibrating the depth measurement, page 154
Performing a first time calibration of the roll and pitch measurements of a door mounted
sensor, page 155
Manually entering the calibration values for the pitch and roll measurements, page 156
Calibrating the depth measurement
In order to provide correct and accurate readings, the depth measurement must be
calibrated. The purpose of the
Calibration
dialog box is to accept and apply the
calibration information from the depth sensor calibration.
Prerequisites
To perform the calibration of the depth measurement, you need a suitable rope.
Context
The sensor detects the depth using water pressure measurements. Calibration is made
automatically by readjusting this measurement against a known depth. In order to
calibrate the depth measurement, it must be submerged into salt water. The software
provided for calibration assumes that the sensor is lowered to your desired “0” (starting)
point + 1m.
You can currently calibrate the depth measurement for sensors interfacing PI50 or PI60
Receiver Units.
Procedure
1 Mount a rope to the top fastening lugs on the sensor.
2 Tighten the rope, and measure one meter from the lid of the sensor to a spot on
the rope.
Place a visual marker on the rope at that location.
3 Lower the sensor over the side of the vessel and into the water until the visual
marker on the rope is even with the surface.
If you wish to use a depth reference different than the sea surface, change the
marking on the rope to fit your preference. You can also attach the sensor one meter
under a floating device. You must test this arrangement before you use it. Make
sure that the sensor lid (with the pressure detection device) is placed at one meter
depth when the unit is lowered into the water.
Simrad TV80 Reference Manual