Humminbird HELIX 9 Operation Manual page 33

Select Frequencies for the 2D View
Use the instructions in this section to select the transducer beams that will be used for the traditional 2D Sonar views.
NOTE: If you have a CHIRP model, the menus in this section are available when CHIRP Mode is turned off (see Set up CHIRP: Turn
on/off CHIRP). To set up CHIRP in the sonar views, see Set up CHIRP: Adjust CHIRP Frequencies.
Select Beams for the (2D) Sonar View
If the installed transducer includes more than one beam, you can select which beam(s) will be displayed in the 2D Sonar view.
1. Main Menu: Press the MENU key twice. Select the Sonar tab.
2. Select 2D Display Frequency.
3. Select the beam(s) you want to use.
83 kHz
200 kHz
83/200 kHz
NOTE: If you have a HELIX SI GPS and select 83 kHz or 83/200 kHz, you can turn on Jigging Mode to refine the returns displayed
on the Sonar View. See Adjust Settings While you Fish: Turn on/off Jigging Mode.
200 kHz
455 kHz
NOTE: The settings in the Down Imaging Display Frequency Options table do not apply to the HELIX SI GPS.
2D Display Frequency Options (HELIX SONAR GPS, HELIX SI GPS)
Select for deep water (more than 800 feet). 83 kHz can be used for deep returns at high
speed. If 83 kHz is selected, the 200 kHz beam pings in the background but is not displayed.
Select 200 kHz for faster pinging and shallower water (less than 800 feet). If 200 kHz is
selected, the 83 kHz beam is not available.
Select 83/200 kHz to ensure both beams ping continuously, so the sonar history is not
interrupted if the sonar view is closed.
The returns from both beams are blended by starting with the 83 kHz wide beam return,
dimming it, and then overlaying it with the 200 kHz narrow beam return. The darker 200 kHz
narrow beam sonar returns will stand out from the paler 83 kHz wide beam sonar returns.
Down Imaging Display Frequency Options (HELIX DI GPS only)
Select 200 kHz for greater bottom coverage in deep water (up to 600 feet).
Select 455 kHz for shallow water (up to 350 feet).
33 Set up Sonar