Furuno CH-270 - Manual (Page 23)

2. HORIZONTAL MODE
2-3
2.3 Choosing the Range
The [RANGE] control chooses the detection (display) range. Choose the range according
to either the fish species being searched or the depth desired. 15 ranges are available.
SEA SURFACE
Range indicated
on the screen.
BOTTOM
SEA SURFACE
Range indicated
on the screen.
BOTTOM
How to choose the range
Default horizontal mode range settings
Range No. Meters Feet
1 10 40
2 20 80
3 40 120
4 60 200
5 80 300
6 100 400
7 120 500
8 160 600
9 200 700
10 250 800
11 300 1000
12 400 1200
13 500 1500
14 600 2000
15 800 2500
Normally, the range is set so that the bottom is traced at the lower part of the screen (like
an echo sounder). Each time the [RANGE] control is operated the newly chosen range
briefly appears in large characters at the screen top. Range is always displayed at the top
right-hand corner of the screen.
Note 1: Unit of range measurement may be chosen from among meters, feet, fathoms,
passi/braza and Hiro (Japanese), with UNIT on the SYSTEM SETTING 1 menu.
For further details, see UNIT in paragraph 5.4.2.
Note 2: Ranges may be freely preset as desired. For further details, see paragraph 5.4.4.