Furuno tztl12f Marine GPS System User Manual


 
7. FISH FINDER (SOUNDER)
7-9
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
Interference from
electrical equipment
Range and depth
to VRM
VRM
Range 427 yd
Depth 18.0 ft