Marport Trawl Explorer, Руководство по обслуживанию

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Trawl Explorer | V5 | Sensor Configuration
1. Vertical
2. Standard (horizontal)
Calibrating the Sensor for Target Strength Value
For V3 version of the sensor, you need to calibrate the sensor to offset the variability
of the sensor transducer and of sound transmission. The aim is to have all sensors displaying the
same target strength value (echogram color) for a given target.
Before you begin
• Make sure you have correctly configured the sensor settings, especially the noise floor level , TVG
mode , ping length and ping frequency .
• You can calibrate the sensor with or without the housing on.
Important: If you change the ping length or frequency on a calibrated sensor, you need to
calibrate it again.
Procedure
1. Set up the following installation. See Appendix B: Examples of Installations for a Target
Strength Calibration on page 89.
• Water needs to be still.
• Use a very thin fishing line (0.1mm thick) to hold the ping pong ball.
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