Humminbird 987C SI COMBO manual Beam Select, Side View Frequency, Fish ID+

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BEAM SELECT

Beam Select sets which sonar returns from

the transducer will be displayed on the screen.

When set to 200/50 kHz, the returns from both beams are blended. The Split Sonar View continues to display the sonar returns from each beam in their respective windows. The blended information is shown in the Sonar View. The RTS® Window in the Sonar View will only show the returns from the 200 kHz narrow beam.

When set to 200 kHz, only the returns from the 200 kHz narrow beam will be displayed in the Sonar View. The Split Sonar View will continue to display returns from both beams in their respective windows. The RTS® Window in the Sonar View will display the returns from the 200 kHz narrow beam.

When set to 50 kHz, the returns from the 50 kHz wide beam will be displayed in the Sonar View. The Split Sonar View will continue to display returns from both beams in their respective windows. The RTS® Window will display the returns from the 50 kHz wide beam.

To use Beam Select:

1.Highlight Beam Select on the Sonar main menu.

2.Use the LEFT or RIGHT 4-WAY Cursor Control keys to select either the 200 kHz beam, the 50 kHz beam or the 200/50 kHz beam. (200/50 kHz, 200 kHz, 50 kHz, Default = 50 kHz)

SIDE VIEW FREQUENCY

Side View Frequency sets the operating

frequency for the Side Imaging sonar.

When set to 262 kHz, the returns provide maximum coverage with 180 degree total beam width.

When set to 455 kHz, the returns provide the highest resolution with 160 degree total beam width.

To set the Side View Frequency:

1.Highlight Side View Frequency on the Sonar main menu.

2.Use the LEFT or RIGHT 4-WAY Cursor Control keys to select either the 262 kHz beam or the 455 kHz beam. (262 kHz, 455 kHz, Default = 262 kHz)

FISH ID+™

Fish ID+™ uses advanced signal processing to interpret sonar returns, and will display a Fish Symbol when very selective requirements are met. When a fish is detected, a fish icon and its depth are displayed above the return that has been classified as being a fish. Three different fish size icons represent the intensity of the sonar return, and provide an indicator of relative fish size.

DualBeam PLUS™ Sonar models represent targets detected in the 200 kHz narrow beam as Orange Fish Symbols, and represent targets detected in the 50 kHz wide beam as Blue Fish Symbols.

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