Furuno FCV-30 - Manual (Page 65)

2. WINDOW DISPLAYS
2-11
Setting up the v-temp graph
1. Click System.
2. Click Net.
Input data: Choose the format of data fed from net sonde or trawl sonar.
CIF: Water temperature and net depth fed from net sonde.
NMEA: Water temperature and net depth fed from trawl sonar
Horizontal axis Min and Horizontal axis Max: These set the minimum and maximum
temperature scale, and the range is –5 to 35(°C).
2.2.5 Bottom-lock zoom window
The bottom-lock zoom window zooms echoes within the user-set distance from the bottom.
Since the bottom is shown as flat, this window is useful for discriminating bottom fish from
the bottom echo.
00:00:28
34 42.616' N
135 19.740' E
Bottom
displayed
as flat
Alarm marker
Zoomed fish Bottom lock zoom window
60
TS
30
20
40
0
Fish school
Bottom-lock zoom window