Humminbird HELIX Series Operation Manual page 48

Adjust the CHIRP Frequency Spectrum
Your control head has been configured with the best settings for a wide range of fishing conditions, and we recommend using the
default start and end CHIRP frequency spectrum included with your unit. However, you can adjust the CHIRP Frequency Spectrum
to limit the interferences on the display or refine the settings to your preference. The menu options are determined by the installed
transducer and control head model.
Requirements: CHIRP mode must be turned on. The menus are also determined by the display frequency you have selected for
each view.
WARNING! If an accessory transducer is installed, confirm it is configured in the control head. See Set up an Accessory Transducer
for details. For information about accessory transducers, visit our Web site at humminbird.com.
Adjust the 2D CHIRP Frequency Spectrum
1. Main Menu (Custom User Mode): Press the MENU key twice. Select the Setup tab.
2. Select CHIRP Configuration. Press the RIGHT Cursor key.
If the menu is not shown in the Setup tab, select the Sonar tab.
3. Select 2D CHIRP Frequency Spectrum. Press the RIGHT Cursor key.
4. Select a frequency menu.
5. Press the RIGHT or LEFT Cursor keys to select a setting.
6. Repeat: Repeat steps 4 and 5 to adjust the Start Frequency and End Frequency for each beam.
7. Close: Press the EXIT key.
Adjust the Down Imaging CHIRP Frequency Spectrum
1. Main Menu (Custom User Mode): Press the MENU key twice. Select the Setup tab.
2. Select CHIRP Configuration. Press the RIGHT Cursor key.
If the menu is not shown in the Setup tab, select the Sonar tab.
3. Select DI CHIRP Frequency Spectrum or Imaging CHIRP Frequency Spectrum. Press the RIGHT Cursor key.
4. Select a frequency menu.
5. Press the RIGHT or LEFT Cursor keys to select a setting.
6. Repeat: Repeat steps 4 and 5 to adjust the Start Frequency and End Frequency for each beam.
7. Close the Submenu: Press the EXIT key.
Adjust the Side Imaging CHIRP Frequency Spectrum
1. Main Menu (Custom User Mode): Press the MENU key twice. Select the Setup tab.
2. Select CHIRP Configuration. Press the RIGHT Cursor key.
If the menu is not shown in the Setup tab, select the Sonar tab.
3. Select SI CHIRP Frequency Spectrum. Press the RIGHT Cursor key.
4. Select a frequency menu.
5. Press the RIGHT or LEFT Cursor keys to select a setting.
6. Repeat: Repeat steps 4 and 5 to adjust the Start Frequency and End Frequency for each beam.
7. Close the Submenu: Press the EXIT key.
Set up Sonar
(optional, CHIRP models only)
48