USING THE LEGEND 3000 SERIES
SURFACE CLUTTER / WHITE LINE / FILTER / DEPTH ALARM / TEMP ALARM
Surface Clutter
SURFACE CLUTTER eliminates
most sonar returns near the water surface
caused by trapped air, boat wakes and temperature inversions. Most surface clutter appears on the display because the strongest sonar returns come from the shallowest objects. The LEGEND 3000 SERIES uses a sophisticated feature called TVG (Time Variable Gain) to overcome surface clutter and counteract the effect of depth on sonar return strength. The level 1 setting is optimal for making sonar information from all depths appear uniformly. Many users, however, prefer to see more surface clutter than this setting shows. Selecting a higher number shows more surface clutter, but sonar returns nearest the surface will appear more intense than they actually are.
The SURFACE CLUTTER setting is retained in memory after the LEGEND 3000 SERIES is turned off. The factory setting is 4.
50kHz Gain Offset (Deep Models Only)
The GAIN knob applies the same gain | 5 |
increase/decrease to the 200kHz and |
50kHz signal performance. This menu allows for the gain applied to
the 50kHz beam to be adjusted higher or lower than the GAIN knob setting to optimize it. An offset value of 5 applies the same gain to the 50kHz signal as the 200kHz gain set by the GAIN knob. Values higher than 5 apply more gain to the 50kHz, values lower than 5 apply less gain.
The 50kHz GAIN OFFSET setting is retained in memory after the Legend 3000/3005 Deep is turned off. The factory setting is 5.
White Line
WHITE LINE activates and adjusts a feature which changes how the LEGEND 3000 SERIES draws the bottom contour and structure, and also shows fainter sonar returns more clearly. When a WHITE LINE setting of 1 to 8 is selected, a light gray band highlights the strongest sonar returns within the sonar image and makes a distinctive outline
along the bottom contour, structure and fish. Selecting a larger numeric setting increases the width of the band and makes fainter sonar returns more noticeable, but the LEGEND 3000’S ability to show subtle differences in bottom composition and structure is reduced. Selecting a smaller numeric setting narrows the band and shows greater variation in bottom composition. Selecting OFF turns the WHITE LINE feature off.
The WHITE LINE setting is retained in memory after the LEGEND 3000 SERIES is turned off. The factory setting is OFF.
Filter
FILTER (DEEP Models only) turns the filtering algorithms on and off.
Select ON to filter excess sonar noise. Select OFF to show the greatest amount of sonar information.
The FILTER setting is retained in memory after the 3000 Deep/3005 Deep is turned off. The factory setting is ON.
Depth Alarm
DEPTH ALARM activates a
shallow water depth alarm. The alarm will
sound when the digital
depth becomes equal to or less than the setting. The tone sounds at a rapid rate for several seconds and then sounds intermittently until the boat moves to deeper water. The DEPTH ALARM can be muted by pressing the CONTROL PANEL knob; once muted, the alarm will not sound again until the boat moves to water deeper than the DEPTH ALARM setting. International models have Depth Alarm settings in full metres from 1 m to 99m.
Note: Remember that depth is measured from the transducer, not from the surface of the water.
The DEPTH ALARM setting returns to factory default after the LEGEND 3000 SERIES is turned off. The factory setting is OFF.
White Line
10