Furuno CH-500, Operator'S Manual

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1. OPERATIONAL OVERVIEW
1-13
1.10 How to Adjust the Range
The RANGE knob adjusts the range for echo detection and display on all display
modes. There are 15 preset ranges, for Horizontal, Vertical and Echo Sounder modes,
which can be changed to suit your needs.
The default preset range is the same for all modes, as shown in the table below.
CH-500
CH-600
To increase the range, turn the RANGE knob clockwise.
To decrease the range, turn the RANGE knob counter-clockwise.
When the range is changed, the selected range is displayed at the top-center of the
screen for a few seconds. The indication at the top-right of the screen always shows
the currently selected range.
For normal use, the range should be set so that the seabed echo is at the bottom of
the screen.
Range
setting
60 kHz 88 kHz 150 kHz 180 kHz 240 kHz
m ft m ft m ft m ft m ft
1 10 40 10 40 10 40 10 40 10 30
2 20 80 20 80 20 80 20 80 20 60
3 40 120 40 120 40 120 40 120 30 90
4 80 200 80 200 60 200 60 200 40 120
5 120 300 120 300 80 300 80 300 60 150
6 160 400 160 400 120 400 100 400 80 200
7 200 500 200 500 160 500 120 500 100 250
8 250 600 250 600 200 600 160 600 120 300
9 300 800 300 800 250 700 200 700 160 400
10 400 1000 400 1000 300 800 250 800 200 500
11 500 1500 500 1500 400 1000 300 1000 250 600
12 600 2000 600 2000 500 1500 400 1200 300 800
13 800 3000 800 3000 600 2000 500 1500 400 1000
14 1200 4000 1000 3500 800 2500 600 2000 500 1500
15 1600 5000 1200 4000 1000 3500 800 2500 600 2000
Range setting
60/153 kHz, 85/215 kHz
m ft
1 20 50
2 40 100
3 60 200
4 80 300
5 100 400
6 120 500
7 160 600
8 200 700
9 250 800
10 300 1000
11 400 1200
12 500 1500
13 600 2000
14 800 3000
15 1200 4000