455 Khz Sensitivity (Advanced, With Quadrabeam Plus™ Transducer) - Humminbird 747c Operation Manual

531526-1_A - 747c_&_777c2_Man_Eng.qxp
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 Balance 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 455kHz Balance requires the purchase of the QuadraBeam PLUS™ transducer. You
can visit our website at www.humminbird.com to order this accessory online or contact our
Customer Resource Center at 1-800-633-1468.
NOTE: 455 kHz Balance 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)
10/2/2006
455 kHz Sensitivity
(Advanced: with QuadraBeam PLUS™ transducer)
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