Furuno CH-250 - Manual (Page 21)

2-3
2.3 Selecting the Range
The [RANGE] control selects the detection (display) range. Select the range according to either
the fish species being searched or the depth desired. 15 ranges are available and minimum and
maximum ranges depend on the transducer used.
SEA SURFACE
Range indicated
on the screen.
BOTTOM
SEA SURFACE
Range indicated
on the screen.
BOTTOM
Figure 2-3 How to select the range
Default horizontal mode range settings
60 kHz 88 kHz 150 kHz
Range
m ft m ft m ft
No.1 10 40 10 40 10 40
No.2 20 80 20 80 20 80
No.3 40 120 40 120 40 120
No.4 80 200 80 200 60 200
No.5 120 300 120 300 80 300
No.6 160 400 160 400 120 400
No.7 200 500 200 500 160 500
No.8 250 600 250 600 200 600
No.9 300 800 300 800 250 700
No.10 400 1000 400 1000 300 800
No.11 500 1500 500 1500 400 1000
No.12 600 2000 600 2000 500 1500
No.13 800 3000 800 2500 600 2000
No.14 1200 4000 1000 3500 800 2500
No.15 1600 5000 1200 4000 1000 3500
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 selected range briefly
appears in large characters at the screen top. Range is always displayed at the right-hand
corner of the screen.
Note 1: Unit of range measurement may be selected for meters, feet, fathoms, passi/braza or
Hiro (Japanese) with UNIT on the SYSTEM SETTING 1 menu. For details see page
5-10.
Note 2: Ranges may be freely preset as desired. For details see page 5-14.