How To Reduce Interference; How To Measure Range, Depth To An Object - Furuno TZTL12F Operator's Manual

7.6

How to Reduce Interference

Interference from other fish finders and electrical equipment appears on the screen as
shown in the illustration. When these types of interference appear on the screen, use
the interference rejector to reduce the interference. Turn off the interference rejector
when there is no interference, so that you do not erase weak echoes.
1. Open the home screen, then tap [Settings] - [Sounder].
2. Turn on [Interference Rejection].
3. Tap [Low], [Medium], [High] or [Auto]. [High] provides the greatest interference re-
jection. [Auto] automatically selects suitable interference setting.
4. Tap the close button to finish.
To deactivate the interference rejection, tap [Off] at step 3.
7.7

How to Measure Range, Depth to an Object

You can measure the range and depth to an object with the VRM.
Tap an object to display the VRM. Read the range and depth in the pop-up menu.
Interference from
other sounder
Range
Depth
VRM
7. FISH FINDER (SOUNDER)
Interference from
electrical equipment
Range and depth
427 yd
to VRM
18.0 ft
7-9