Furuno CH-300 - Manual (Page 48)

2. HORIZONTAL MODE
2-22
2.14 Horizontal Menu Overview
This section presents an overview of the items on the HORZ menu.
1. Press the MENU key to open the menu.
2. Press ▲ to choose MENU and then press ◄ or ► to choose the HORZ menu.
TVG LEVEL 4.0
TVG DISTANCE 4.0
RES. COLOR LOG
CLUTTER 0
TARGET KEY ECHO
: SELECT : CHANGE MENU: END
MENU COM1 VERT ES PRESET SYS COM2 HORZ
LOCK MODE AUTO
AUTO TILT OFF
HORZ menu
3. Press ▲ or ▼ to choose item desired.
4. Press ► to show corresponding dialog box.
5. Press ◄ or ► to choose option desired.
8. Press the MENU key to register your selection and close the menu.
2.14.1 Horizontal menu description
TVG LEVEL: Compensates for propagation loss of sound in water. Default setting is 4.0.
For further details, see paragraph 2.12.3.
TVG DISTANCE:
As above. Default setting is 4.0.
RES. COLOR:
Sets transfer characteristics of input signal level versus display echo level.
Echo strength is emphasized in order of CUBE, SQUARE, LINEAR, LOG, and you can
observe the characteristics of each by watching the color bar as you change the setting.
LOG:
Displays weak to strong echoes in their respective levels. This is the default
setting,
and is suitable for general use.
LINEAR: Downplays the weak echoes when compared with LOG. Effective for suppressing
weak echoes such as plankton.
SQUARE: Strong echoes are emphasized more than in LINEAR.
CUBE:
Strong echoes are emphasized even more than in SQUARE.
CLUTTER:
Low intensity echoes, often caused by sediments in water, are painted on the
screen as a large number or random dots. This noise can be suppressed. The higher the
number (setting) the weaker the echoes which are erased.