User manual GARMIN FISHFINDER 320C

[. . . ] Fishfinder 320C owner's manual and reference guide © Copyright 2003 Garmin Ltd. Unit 5, The Quadrangle, Abbey Park Industrial Estate, Romsey SO51 9DL, U. K. Except as expressly provided herein, no part of this manual may be reproduced, copied, transmitted, disseminated, downloaded or stored in any storage medium, for any purpose without prior written consent of Garmin. Garmin hereby grants permission to download a single copy of this manual and of any revision of this manual onto a hard drive or other electronic storage medium to be viewed and to print one copy of this manual or any revision hereto, provided that such electronic or printed copy of this manual or revision must contain the complete text of this copyright notice and provided further that any unauthorized commercial distribution of this manual or any revision hereto is strictly prohibited. [. . . ] 2X Zoom ­­ Displays the 2X zoomed picture on the full screen and does not show the original scale picture. 4X Split ­­ Shows two reduced pictures, the right at the original depth scale and the left at 1/4 the original depth scale. 4X Zoom ­­ Displays only the 4X zoomed picture on the full screen. Btm (Bottom) Split ­­ Shows two reduced pictures, the right at the original depth scale and the left showing sonar returns from the bottom up. Btm (Bottom) Lock ­­ Displays only the Bottom Lock (returns from the bottom up) picture on the full screen. · View/Span -- available when a Zoom scale other than `No Zoom' is selected. The `View' or `Span' setting is used to change the viewing range of a zoomed display. If the display is 2X or 4X split, only the zoomed portion on the left side of the display will be affected by the change. If the display is Bottom Split or Bottom Lock, `Span' will adjust how far off the bottom the unit will display data. · Gain -- allows you to control the sensitivity of the unit's receiver. To see more detail, increase the receiver sensitivity by selecting a higher gain percentage. If there is too much detail or if the screen is cluttered, lowering the sensitivity may increase the clarity of the display. · Target Level -- adjusts which colors are used to display sonar information. 16) will appear on the right side of the screen as you adjust this setting. A higher percentage will result in more strong-signaled colors (see pg. A lower percentage will result in more weaker-signaled colors (see pg. This setting does not increase/decrease the unit Gain. Unit Operation Adjustment Menu Options Depth Line 2X Zoom View Normal View Sonar 2X Split Screen (shown with Depth Line) Bar represents area shown on 2X View Sonar View Adjustment 11 Unit Operation Adjustment Menu Options You may resize the split line to the left or right. · Whiteline -- controls how the unit displays information about the bottom type (hard or soft). With the Whiteline `Off', all high-intensity bottom returns will display as red. With Whiteline set at `Normal' or 1-100%, this option can be used to better determine bottom hardness. · Frequency -- allows you to choose a sonar operation frequency. Frequency refers to the "pitch" of the sound that the transducer sends and receives. · Depth Line -- adds a horizontal depth line across the display which is used to measure the depth of underwater objects. [. . . ] A rough definition of a thermocline is a break in water where the water temperature changes faster than the water above it. 9) Thermocline 24 Physical Specifications Size: 6. 2" H x 6. 3" W x 3. 25" D (15. 8 cm x 16. 0 cm x 8. 3 cm) Weight: 2. 25 lbs. (1. 02 kg) Display: 5. 0" diagonal (12. 7 cm), 4. 02" H x 2. 94" W (10. 2 cm x 7. 5 cm) high-contrast, 16-color TFT display with adjustable brightness (234 x 320 pixels) Case: Fully gasketed, high-impact plastic alloy, waterproof to IEC 529 IPX7 standards Temp. Range: 5°F to 158°F (-15°C to 70°C) Power Source: Usage: Fuse: Sonar Power: Frequency: Depth: 10-35v DC 17 watts max. [. . . ]