Furuno CH-250 - Manual (Page 62)

3-12
3.12 Vertical Menu Overview
This section presents an overview of the items on the VERT menu.
1. Press the [MENU] key to open the menu.
7. Press to select MENU and then press or to select the VERT menu.
TVG LEVEL 4.0
TVG DISTANCE 4.0
GAIN ADJUST 0
RES. COLOR LOG
CLUTTER 0
HORZ RANGE x1
: SELECT : CHANGE MENU: END
MENU COM1 VERT ES PRESET SYS COM2 HORZ
Figure 3-16 VERT menu
8. Press or to select item desired.
9. Press to show corresponding dialog box.
10. Press or to select option desired.
11. Press the [MENU] key to register your selection and close the menu.
3.12.1 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.
GAIN ADJUST:
Compensates for too weak or too strong echo level. Adjust it when the gain on
the vertical fan mode is not the same as that on the horizontal and echo sounder modes. Setting
range: -10 to +10. Default setting is 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.