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531526-1_A - 747c_&_777c2_Man_Eng.qxp 10/2/2006 1:42 AM Page 41 www.reelschematic.com
Sensitivity
Sensitivity controls how much detail is shown on the display and will adjust the sensitivity of all sonar frequencies. Increasing the sensitivity shows more sonar returns from small baitfish and suspended debris in the water; however, the display may become too cluttered. When operating in very clear water or greater depths, increased sensitivity shows weaker returns that may be of interest. Decreasing the sensitivity eliminates the clutter from the display that is sometimes present in murky or muddy water.
If Sensitivity is adjusted too low, the display may not show many sonar returns that could be fish.
NOTE: The Sensitivity setting is a global setting and will adjust the sensitivity of all sonar frequencies, as compared to specific sensitivity adjustments (such as 83 kHz Sensitivity,
455 kHz Balance or Wideside Sensitivity) which allow you to adjust the level of sensitivity for one specific beam at a time.
Sensitivity at Low Sensitivity at Medium Sensitivity at High
To adjust the Sensitivity:
1. Highlight Sensitivity on the Sonar X-Press™ Menu.
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to increase or decrease the Sensitivity setting. (Low = 1, High = 20, Default = 10)
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Table of contents
- 8 DualBeam PLUS™ Sonar
- 9 QuadraBeam PLUS™ Sonar (with optional-purchase QuadraBeam PLUS™ transducer)
- 10 WideSide® Sonar (with optional-purchase WideSide® transducer)
- 11 Universal Sonar
- 15 Sonar View
- 16 Understanding Sonar History
- 17 Real Time Sonar (RTS®) Window
- 17 Freeze Frame and Cursor
- 18 Bottom Presentation
- 20 Sonar Zoom View
- 21 200/83 kHz Split Sonar View
- 22 Big Digits View
- 23 Circular Flasher View
- 27 WideSide® View (with optional-purchase WideSide® transducer)
- 28 POWER/LIGHT Key
- 28 VIEW Key
- 29 MENU Key
- 29 4-WAY Cursor Control Key
- 30 EXIT Key
- 35 Normal Operation
- 36 Simulator
- 37 System Status
- 37 Self Test
- 38 Accessory Test
- 38 PC Connect (with PC Connect Cable Only)
- 40 Side (WideSide® transducer: WideSide® view only
- 41 Sensitivity
- 42 Upper Range (Advanced: Sonar, Split Sonar, Big Digits and Circular Flasher Views only)
- 43 Lower Range
- 44 Side Beam Range (WideSide® transducer: WideSide® view only)
- 45 Chart Speed
- 46 Zoom Level (Sonar Zoom view only)
- 46 Bottom Lock
- 47 Bottom Range (Sonar Zoom View only, when Bottom Lock is On)
- 49 Beam Select
- 50 Fish ID
- 51 Fish ID Sensitivity
- 51 Real Time Sonar (RTS®) Window
- 52 Bottom View
- 52 Zoom Width
- 53 83 kHz Sensitivity (Advanced)
- 54 455 kHz Sensitivity (Advanced, with QuadraBeam PLUS™ transducer)
- 55 WideSide® Sensitivity (Advanced, with WideSide® transducer)
- 56 Depth Lines (Advanced)
- 57 Surface Clutter (Advanced)
- 58 Noise Filter (Advanced)
- 58 Max Depth (Advanced)
- 59 Water Type (Advanced)
- 59 Transducer Select
- 61 Depth Alarm
- 61 Fish ID Alarm
- 62 Low Battery Alarm
- 62 Aux. Temp. Alarm (with optional-purchase temp. probe or Temp/Speed only)
- 63 Temp Alarm
- 63 Alarm Tone
- 65 Units - Depth
- 65 Units - Temp (International only)