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Humminbird 1157C Manual

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455 kHz Sensitivity
(Advanced, with optional purchase QuadraBeam PLUS™
transducer only)
455 kHz Sensitivity adjusts the sensitivity of the 455 kHz beam. Increasing the sensitivity will display
additional weak returns and decreasing the sensitivity will display fewer weak returns. A QuadraBeam
PLUS™ transducer must be attached to the Fishing System. The 455 kHz Sensitivity menu choice is
available when Transducer Select is set to QuadraBeam (see Sonar Menu Tab: Transducer Select) and
User Mode is set to Advanced (see Setup Menu Tab: User Mode).
NOTE: The 455 kHz Sensitivity requires the purchase of the QuadraBeam PLUS™ transducer.
You can visit our web site at www.humminbird.com to order this accessory online or contact our Customer
Resource Center at 1-800-633-1468.
NOTE: 455 kHz Sensitivity is particularly useful for adjusting the sensitivity of the 455 kHz sonar returns in the
Side Beam View. The 455 kHz sensitivity can be adjusted without affecting the sensitivity of the 200 kHz returns
shown in the 200 kHz sonar window.
To change the 455 kHz Sensitivity setting:
1. Make sure you have selected QuadraBeam Transducer and Advanced Mode and that the QuadraBeam
PLUS™ transducer is connected, then highlight 455 kHz Sensitivity on the Sonar Main Menu.
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the 455 kHz Sensitivity. (-10 to +10,
Default = 0)
Depth Lines
(Advanced)
Depth Lines divide the display into four equal sections that are separated by three horizontal depth lines. The
depth of each line is displayed along the depth scale. You can either turn Depth Lines On or Off. The Depth
Lines menu choice is available when User Mode is set to Advanced (see Setup Menu Tab: User Mode).
To change the Depth Lines setting:
1. Make sure you are in Advanced User Mode, then highlight Depth Lines on the Sonar main menu.
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to turn the Depth Lines setting On or Off. (Off,
On, Default = On)
Depth
Lines
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