Humminbird 900 Series, 997c Combo manual What’s On the Sonar Display, Triplog

What’s On the Sonar Display

The 900 Series™ can display a variety of useful information about the area under and adjacent to your boat, including the following items:

Triplog

1

10

2

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8

9

5

6

11

7

12

7Speed - if a Speed accessory or GPS Receiver is attached, the 900 Series™ can display the speed of the boat, and can keep a triplog of nautical or statute miles traveled.

8Thermoclines - layers of water with different temperatures that appear at different depths and different times of the year. A thermocline typically appears as a continuous band of many colors moving across the display at the same depth.

9Sonar Color Bar - color spectrum indicating low to high sonar intensity returns, where red indicates high intensity and white indicates low intensity.

10 Bait Ball

11 RTS® (Real Time Sonar) Window

12 Second Sonar Return - when the sonar signal bounces between the bottom and the surface of the water and back again. Use the appearance of the second return to determine bottom hardness. Hard bottoms will show a strong second return, while soft bottoms will show a very weak one or none at all.

Triplog

1Depth - water depth; can be set to alarm when the water becomes too shallow.

2Timer - Elapsed time with Speed accessory or GPS Receiver.

3Distance - Distance traveled with Speed accessory or GPS Receiver.

4Average Speed - Average speed reading with Speed accessory or GPS Receiver.

5Barometric Pressure - Requires optional-purchase WeatherSense®

6Temperature - water surface temperature

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