Humminbird HELIX 9 Operation Manual page 46

Set the Upper/Lower Range
Upper Range and Lower Range control how much of the water column is displayed on the view. For example, if you are only interested
in the area between 20 and 50 feet deep, set the Upper Range to 20 and the Lower Range to 50. The view will not display sonar
returns outside of the set ranges, and greater detail for the selected range will be displayed.
1. Sonar X-Press Menu (Advanced User Mode): With a Sonar View displayed on-screen, press the MENU key once.
2. Select Upper Range. Press the RIGHT or LEFT Cursor keys to adjust the setting.
3. Select Lower Range. Select Auto or set a specific depth (manual).
Auto: The Lower Range will be adjusted by the control head to follow the bottom automatically.
Manual : The control head locks onto the depth you select.
NOTE: There must be a difference of 10 feet between the upper and lower range settings.
Change the Chart Speed
Chart Speed controls how fast the sonar history moves across the view and how much detail is shown. A faster speed is preferred
by most anglers, and the sonar history moves quickly across the view. To slow down the sonar history display, select a lower setting.
Regardless of the Chart Speed setting, the RTS Window will update at the maximum rate possible for depth conditions.
1. Sonar X-Press Menu: With a Sonar View displayed on-screen, press the MENU key once.
2. Select Chart Speed.
3. Press the RIGHT or LEFT Cursor keys to adjust the setting.
Turn on/off Jigging Mode (HELIX SI GPS only)
If you have a HELIX SI GPS, you can use Jigging Mode to refine the sonar returns shown in the Sonar View. Turn on Jigging Mode if
you've selected 83 kHz or 83/200 kHz in the Beam Select menu (see Set up Sonar: Select Beams).
1. Sonar X-Press Menu: With a Sonar View displayed on-screen, press the MENU key once.
2. Select Jigging Mode.
3. Select On or Off.
On
Off
Sonar (2D)
Turn on Jigging Mode if you've selected 83 kHz or 83/200 kHz in the Beam Select menu (see
Set up Sonar: Select Beams). When Jigging Mode is turned on, the sonar returns are refined
on the view, and the chart speed slows down to show more detail.
Turn off Jigging Mode if you've selected 200 kHz in the Beam Select menu (see Set up Sonar:
Select Beams). Turn off Jigging Mode to display the sonar history at the selected chart speed
and see coarser returns on the display.
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