Picture Advance Speed; How To Reduce Interference - Furuno TZT9 Operator's Manual

7. FISH FINDER
7.5

Picture Advance Speed

The picture advance speed controls how quickly the vertical scan lines move across
the screen. A fast advance speed expands the size of a school of fish horizontally on
the screen. A slow advance speed shortens the school of fish. Use a fast advance
speed to see the hard bottom. Use a slow advance speed to see the smooth bottom.
1. Select [Menu] on the menu icon bar to open the main menu.
2. Select [Sounder].
3. Select the [Fish Finder Source] - [fish finder] menu.
4. Select [Picture Advance] menu.
5. Select a picture advance speed. The options in the window indicate the number
of scan lines made per transmission. For example, [1/2] creates one scan line per
two transmissions. [1/16] is the slowest advance speed and [4/1] is the fastest
speed. [Stop] stops picture advance, and is useful for taking a photo or screenshot
of the screen.
6. Select [Close] to exit the menu.
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. This function is
available when you connect DFF1, DFF3 or BBDS1.
7-8
Fast
CAUTION
The picture is not refreshed when
picture advancement is stopped.
Maneuvering the vessel in this condition
may result in a dangerous situation.
Slow