The irreplaceable, unique device for each fisherman is a sonic depth finder which allows to measure reservoir depth, to investigate the general condition of water, to define a congestion of fishes, a relief of the available underwater barriers and a bottom. Buying itself this device, fans of fishing get the reliable assistant, and here is how to use the sonic depth finder, in practice not all professional fishermen know what to speak about the beginning amateur fishers.
Instruction
1. Include the automatic mode and start the sonic depth finder, having pressed the corresponding button on the device. Begin to move very slowly on bay perimeter, watching the sonic depth finder screen. On the screen it is possible to see a dashed line which shows a water surface. In the bottom of the screen the reservoir bottom, and in the left top corner – water depth is shown. It is necessary to know that at the automatic mode the range is constantly corrected by the device. In addition all modern sonic depth finders have the system of definition of fishes that gives the chance on the screen to interpret a signal then small symbols in the form of small fishes instead of arches will be displayed.
2. Adjust sensitivity of the device in order that the sonic depth finder could accept the signal reflected from water accurately. In case the sensitivity of the device too low or on the contrary too high, display of detailed information on the screen can be absent or hindrances, other undesirable signals will be traced. In order that it is correct to modify sensitivity, make a number of the following actions.
3. Change depth range in the manual mode, having made it is twice higher, than costs in the automatic mode. Increase sensitivity before while the echo of a bottom does not become at a depth twice more, than the depth of the actual bottom. Return depth range to an initial state. In case after the specified actions, there are noise, reduce a few level of sensitivity of the device.
4. Adjust scrolling or speed of the chart that the image was ideal. Move with the sonic depth finder on the necessary area and you watch the screen. When the device is adjusted truly, on the screen without noise and barriers it will be possible to track all necessary, necessary for the phenomenon concerning quantity of fish, a reservoir bottom relief, etc.