User manual NAVMAN FISHFINDERS FISH 4380

[. . . ] F I S H 4 3 5 0 / 4380 F I S H F I N D E R Installation and Operation Manual English. . . . . . . . . . . . . . 59 www. navman. com NAVMAN The FISH 4350 and FISH 4380 are set up with default units of feet, °F (Fahrenheit), US gallons and knots. See section 3-7 Setup > Units, to change the units. FCC Statement Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a normal installation. [. . . ] As the Þsh moves closer to the middle of the cone, the distance between the transducer and the Þsh reduces and the echo is displayed at progressively shallower depths, producing the start of an arch. When the Þsh passes directly beneath the middle of the cone, the echo becomes strongest and thickest. As the Þsh passes out of the middle of the cone the reverse happens with a progressively weaker and deeper echo. For example: · Poor transducer installation (see Transom show on the display as horizontal lines as they swim into and out of the transducer sonar beam. It will be much easier to see Þsh arches when using zoom mode to concentrate on a particular section of water, rather than just displaying everything from the surface to the bottom. · It is difÞcult to get Þsh arches in shallow water as the transducer sonar beam is very narrow near the surface and Þsh do not stay within the beam long enough to display an arch. Several Þsh in shallow water tend to display as randomly stacked blocks of pixels. · Wave motion may result in distorted fish arches. 4-3 Gain Gain (sensitivity) controls the amount of detail displayed on the FISH 4350 and FISH 4380. Understanding how to set suitable Gain settings is important for optimum performance. The Navman ÞshÞnder has two gain modes, Auto Gain and Manual Gain. Normally the best results are obtained in Manual Gain, but practice and experience are required to obtain the optimum settings for different conditions. Therefore, the use of Auto Gain is strongly recommended when learning to use the ÞshÞnder or when travelling at speed. · In Auto Gain, the gain adjusts automatically to compensate for water depth and clarity. · In Manual Gain, the gain can be adjusted by the user to compensate for water depth and clarity. High Gain settings may amplify the normal background noise until it appears as random pixels. Note: The Gain mode automatically changes to Manual Gain if the gain setting is adjusted by the user. Obtaining the best results To obtain the best detection capability for both fish and bottom we recommend the user adjusts the gain in the A-Scope display until the threshold line is just to the right of the unwanted noise: Gain Threshold line Unwanted signal Changing between Auto and Manual To change between Auto Gain and Manual Gain: 1. Use the cursor key to select Auto or Manual. Adjusting Gain settings 1. Use the or cursor keys to change the gain. FISH 4350 / 4380 Installation and Operation Manual Gain line NAVMAN 17 4-4 Range Range is the vertical depth displayed on the FISH 4350 and FISH 4380. The Navman ÞshÞnder has two range modes, Auto Range and Manual Range: · In Auto Range, the ÞshÞnder adjusts the depth range automatically so the bottom is always shown in the lower part of the display. · In Manual Range, the ÞshÞnder shows only a selected depth range. In areas of rapidly changing bottom depth, such as the sea ßoor around pinnacles, it can be useful to prevent the display from rescaling to always show the bottom. If the bottom is deeper than the speciÞed depth range, it will not be shown on the display. Changing the Range Mode To change between Auto Range and Manual Range, hold the + or -. [. . . ] Ph: +86 20 3869 8839 Fax: +86 20 3869 8780 e-mail: sales@peacefulmarine. com web: www. peacefulmarine. com India Access India Overseas Pvt. Ph: +91 120 244 2697 TeleFax: +91 120 253 7881 Mobile: +91 98115 04557 e-mail: vkapil@del3. vsnl. net. in Esmario Export Enterprises Block No. Ph: +91 40 2784 5163 Fax: +91 40 2784 0595 e-mail: gjfeee@hd1. vsnl. net. in web: www. esmario. com Indonesia Polytech Nusantara, Graha Paramita 2nd Floor, Jln Denpasar Raya Blok D2 Kav 8 Kuningan, Jakarta 12940. Ph: +62 21 252 3249 Fax: +62 21 252 3250 e-mail: polytech@transavia. co. id Korea Kumhomarine Technology Co. [. . . ]