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| 5.1.2 | Zoom Full page | 28 |
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| 5.1.3 | Chart/Fish | 29 |
| 5.2 | GAIN MODE | 29 | |
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| 5.2.0 | Auto Mode | 29 |
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| 5.2.1 | Manual Mode | 29 |
| 5.3 | RANGE MENU | 29 | |
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| 5.3.0 | Range Mode | 29 |
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| 5.3.1 | Depth | 30 |
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| 5.3.2 | Shift | 30 |
| 5.4 | INTERFERENCE REJECTION | 30 | |
| 5.5 | SENSITIVITY MENU | 31 | |
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| 5.5.0 | Gain | 31 |
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| 5.5.1 STC (Sensitivity Time Control) | 31 | |
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| 5.5.2 | Surface Noise Filter | 32 |
| 5.6 | DISPLAY SETUP | 33 | |
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| 5.6.0 | Color Settings | 33 |
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| 5.6.1 | Scrolling Speed | 33 |
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| 5.6.2 | White Line | 33 |
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| 5.6.3 | Fish Symbols | 33 |
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| 5.6.4 | 33 | |
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| 5.6.5 | Water Temperature | 34 |
| 5.7 | TRANSDUCER SETUP | 34 | |
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| 5.7.0 | Keel Offset | 34 |
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| 5.7.1 | Calibrate Water Speed | 34 |
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| 5.7.2 | Calibrate Water Temp | 34 |
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| 5.7.3 | Calibrate Aux Temp | 34 |
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| 5.7.4 | Set Defaults | 34 |
| 5.8 | ALARMS | 34 | |
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| 5.8.0 | Shallow Water | 35 |
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| 5.8.1 | Depth Water | 35 |
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| 5.8.2 | Fish | 35 |
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| 5.8.3 | Temperature Upper | 35 |
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| 5.8.4 | Temperature Lower | 35 |
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| 5.8.5 | Temperature Rate | 35 |
| 5.9 | SAVE SETTINGS TO USER | 35 | |
| 5.10 LOAD SETTINGS FROM USER | 36 | ||
| 5.11 | RESTORE CURRENT PRESET DEFAULTS | 36 | |
6. | FF520 SPECIFICATIONS | 37 | ||
7. | TIPS OF OPERATIONS FAQ | 39 | ||
INDEX |
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| ...................................................................................................... | 43 |
Page 6 | FF520 |