Furuno CH-37 - Manual (Page 46)

3-2
3.2 Selecting Range
The RANGE control selects the detection (display) range. Se-
lect the range according to either the fish species being
searched or the depth desired. Normally it is set so that the
bottom is traced at the lower part of the screen (like an echo
sounder).
Surface
Bottom
RANGE m
Vertical
range
(V:H=1:1)
60 PORT
R
STBD 60
60
Horizontal
range
60
- RANGE +
Range (m) 20 40 60 280 320 400
Note: The unit of range measurement can be changed through
the SYSTEM menu. For details see page 6-1.
Figure 3-2 How to select range
V:H RANGE key
The V:H RANGE key changes the horizontal range scale in
two steps. See the figures below.
V:H=1:1 V:H=1:2
V
H
R 60
60
60
R 30
60
30
Figure 3-3 How the V:H RANGE key works