Furuno GP-1650DF manual Sounder Display Description, Normal sounder display indications, markers

2.2Sounder Display Description

The figure below shows all indications and markers which may appear on the normal sounder display.

Normal sounder display indications, markers

							Functions for
			Variable				soft keys
			Range
Nav information			Marker
window			(white)			Depth scale
	34°	12.345’ N		CSE	245.8°		SOUNDER
	135°	12.345’ E		SPD	16.3kt
Color					15.0		RANGE
	30					20
bar
							GAIN
Temp.	20					30
scale							SHIFT
Water	10					40
temp.							MODE/
Graph						50	FREQ
	54.0
Water							SNDR
	DGPS 3D
			50k				FUNC
temp.
display			Tx frequency				Depth

GPS status

Figure 2-2 Indications on the normal sounder display

Note: The water temperature graph can be set on or off (See page 11-4.). The tempera- ture scale is fixed between 20-80 ° F (0 to 30° C).

The normal sounder display shows either the 50 kHz picture or 200 kHz picture. To switch between these pictures, do the following:

1.Press the [SNDR] key several times to show the normal sounder display.

2.Press the soft key MODE/FREQ. The dis- play changes as below.

	MODE/FREQ 0.0	0	SOUNDER
			SELECT
	▲
			50kHz
	' AUTO CRUISING
		50
	™ AUTO FISHING		SELECT
	™ MANUAL		200kHz
	▼
		100
DGPS 3D	50k	150	RETURN
Figure 2-4 Mode/freq window

3.Press the soft key SELECT 200kHz (SE- LECT 50kHz).

4.Press the soft key RETURN to manually close the window, or wait 10 seconds and the window automatically closes.

50 kHz picture

The sounder uses ultrasonic pulses to de- tect bottom conditions. The lower the fre- quency of the pulse, the wider the detection area. Therefore, the 50 kHz frequency is use- ful for general detection and judging bottom condition.

200 kHz picture

The higher the frequency of the ultrasonic pulse the better the resolution. Therefore, the 200 kHz frequency is ideal for detailed ob- servation of fish school.

50 kHz

DGPS 3D

50k

0.0	0	SOUNDER
		RANGE
	50	GAIN
	100	SHIFT
		MODE/
		FREQ
	150	SNDR
		FUNC

200 kHz

Figure 2-5 Comparisons of

transducer frequencies

Figure 2-3 Normal sounder display

2-2