Humminbird HELIX 5 G2 SERIES Operation Manual page 39

Select an Imaging Frequency (Down Imaging models only)
Use the following instructions to choose an imaging frequency that will be used for the Down Imaging View. For the best overall image
quality and depth, select 455 kHz. For the sharpest image (but limited depth capability), select 800 kHz.
1. Main Menu: Press the MENU key twice. Select the Sonar tab.
2. Select Imaging Display Frequency.
3. Select 455 kHz or 800 kHz.
Set the Down Imaging Beam Width (HELIX CHIRP SI GPS G2 only)
In the HELIX CHIRP SI GPS G2, you can set the width of the beam (side to side) used for the Down Imaging View. To see only the data
directly under your boat, select Narrow. Medium reveals more information, while Wide displays the maximum information available
from the Down Imaging beam width. See Understand the Down Imaging View for more information.
1. Main Menu: Press the MENU key twice. Select the Sonar tab.
2. Select Down Imaging Beam Width.
3. Press the RIGHT or LEFT Cursor keys to select a width.
HELIX DI G2, HELIX CHIRP DI GPS G2 Display
Frequency Options for the Sonar View
45°
800kHz
455kHz
16°
455kHz
28°
200kHz
39
75°
Imaging Display Frequency Options
for the Down Imaging View
45°
800kHz
75°
455kHz
16°
455kHz
28°
200kHz
Set up Sonar