Furuno NAVNET 1823C - Manual (Page 206)

5. CUSTOMIZING YOUR UNIT
5-32
5.9.3 Sounding range, zoom range, bottom lock range
This paragraph shows you how to set custom ranges for basic range, zoom
range (marker and bottom zoom) and bottom lock range. All default basic ranges
are restored whenever the unit of depth measurement is changed. Therefore,
change the depth unit before changing the basic ranges.
1. Show the sounder display, then press the [MENU] key to open the main
menu.
2. Press the SOUNDER RANGE SETUP soft key to show the SOUNDER
RANGE SETUP menu.
RANGE
SETUP
EDIT
RETURN
RANGE 1 15 ft
RANGE 2 30 ft
RANGE 3 60 ft
RANGE 4 120 ft
RANGE 5 200 ft
RANGE 6 400 ft
RANGE 7 1000 ft
RANGE 8* 4000 ft
ZOOM RANGE 30 ft
BOTTOM LOCK RANGE 20 ft
*2000 ft on using ETR-6/10N
Sounder range setup menu
3. Select the range to change, then press the EDIT soft key.
4. Rotate the trackball or [ENTER] knob to set range desired, then press the
RETURN soft key. For basic range, set depth from lowest to highest; a range
cannot be higher than its succeeding neighbor.
5. Press the [MENU] key to finish.
Default basic ranges
Range 8 Range 1 Range 2 Range 3 Range 4 Range 5 Range 6 Range 7
ETR-6/10N ETR-30N
5 m 10 m 20 m 40 m 80 m 150 m 300 m 1200 m 1500 m
15 ft 30 ft 60 ft 120 ft 200 ft 400 ft 1000 ft 4000 ft 4500 m
3 fa 5 fa 10 fa 20 fa 40 fa 80 fa 150 fa 650 fa 900 fa
3 P/B 5 P/B 10 P/B 30 P/B 50 P/B 100 P/B 200 P/B 700 P/B 900 P/B
Setting range: 2 m –1200 m, 7 ft – 4000 ft, 2 fa – 650 fa, 1 P/B – 1000 P/B
Zoom range and bottom-lock ranges
Item Settings Default Setting
Zoom Range 2 m – 120 m, 7 ft – 400 ft,
1 fa – 60 fa, 1 P/B – 70 P/B 10 m, 30 ft, 10 fa, 10 P/B
Bottom-lock
Range 3 or 6 m, 10 or 20 ft, 2 or 3
fa, 2 or 3 P/B 6 m, 20 ft, 3 fa, 3 P/B