Furuno CH-300 - Manual (Page 70)

3. VERTICAL SCAN MODE
3-12
3.13 Vertical Menu Overview
This section presents an overview of the items on the VERT menu.
1. Press the MENU key to open the menu.
2. Press ▲ to choose MENU and then press ◄ or ► to choose the VERT menu.
TVG LEVEL 4.0
TVG DISTANCE 4.0
RES. COLOR LOG
CLUTTER 0
HORZ SCAN RATE
VERT SCAN RATE
HORZ RANGE
1
1
x1
: SELECT : CHANGE MENU: END
MENU COM1 VERT ES PRESET SYS COM2 HORZ
VERT menu
3. Press ▲ or ▼ to choose item desired.
4. Press ► to show corresponding dialog box.
5. Press ◄ or ► or to choose option desired.
6. Press the MENU key to register your selection and close the menu.
3.13.1 Vertical menu description
TVG LEVEL: Compensates for propagation loss of sound in water. The default setting is
4.0.
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. You can see the
characteristics of each by watching the color bar as you change the setting. Default setting
is LOG.
LOG: Displays weak to strong echoes in their respective levels. This setting 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 of random dots. The higher the number (setting) the weaker the
echoes which are erased.