Insignia 350TX - Manual (Page 26)

Speed Offset. The Speed Offset option allows the
user to compensate for differences in hull design, and
its effect on the accuracy of the speed measurement.
If there is a discrepancy between the indicated speed
and another speed measurement device on the boat,
the speed measurement can be varied to improve
accuracy. Remember, the speed paddle wheel
measures speed through the water, not speed over ground.
Speed offset is remembered after power is disconnected.
Depth Offset. The Depth Offset allows the user to select the point on the boat
from which the depth measurement is made.
Selecting a positive value adds distance to the
measurement. If the transducer is mounted 3 feet
beneath the waterline, a positive 3 will show the
correct depth from the surface of the water.
Another frequent use of depth offset is to show the
depth beneath the deepest point of the hull. A
negative value equal to the distance from the transducer location and the
deepest point of the hull will have the same effect as mounting the transducer
at the deepest point.
Depth offset is remembered after power is disconnected.
Filter . Filter provides an advanced level of control over
the amount of detail visible on-screen and the
sensitivity of the unit. You can choose the setting(s) that
works best for your style of use.
With Filter set to OFF, the fishfinder displays increased
detail, showing more thermoclines, structure, fish and
even your bait when it falls within the sonar cone. However, this extreme sensitivity
requires you to optimize the installation of your unit and transducer so that “noise”
generated by a moving boat is not picked up by the fishfinder.
With Filter set to ON, excessive clutter often caused by interference from other
fishfinders, your boat‘s engine, or from noise generated by the hull at high speeds
is reduced in the display. This provides a cleaner image on the display in most cases.
With the Filter menu on-screen, use the arrow keys to select the setting
for your boat. When finished, press MENU to advance to the next menu.
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ADVANCED FEATURES
USING DIAGNOSTIC