Reducing Interference; Selecting A Color Limit; Filtering Colors; Smoothing Noises - Garmin CS 1522 Owner's Manual

3.3.1

Reducing Interference

You can adjusts the sensitivity to reduce the effects of interference from nearby sources
of noise. Interference from other acoustic or electronic equipment operating nearby
may appear on the display. Minor interference or noise can be stray signals that look
like actual targets. Severe noise can completely fill the screen and make depth readings
impossible. To counter interference, you have to first identify the type of interference.
Although most noises can be eliminated with fairly simple techniques, some interference
can only be reduced to a more acceptable level.
Select Interference and select a setting.
Low
TIP: The lowest interference setting that achieves the desired improvement should be
used.
3.3.2

Selecting a Color Limit

You can filter out weak clutter from the screen by selecting the threshold color and hiding
part of the color palette.
NOTE: Not available in ClearVü and SideVü modes.
Select Color Limit and use the main knob or the control pad to select the threshold color.
3.3.3

Filtering Colors

You can customize the appearance of sonar returns by toggling individual colors on/off.
NOTE: Not available in ClearVü and SideVü modes.
Select Color Filter and select individual colors.
NOTE: The selection will not affect earlier sonar data.
3.3.4

Smoothing Noises

Smoothing removes noises that are part of normal sonar returns, and adjusts the
appearance of returns such as the bottom.
The effect is more subtle than Interference (see 3.3.1) because of averaging. You can
adjust interference and smoothing settings incrementally to remove undesirable noises
from the display.
NOTE: Not available in ClearVü and SideVü modes.
Select Smoothing and select a setting.
46
Medium
CHAPTER 3 MENU AND SETTINGS
High