Sounder Display Description, KHz picture | Furuno GP-1850DF instruction

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		SOUNDER
	135°	12.345’ E		SPD	16.3kt
Color					15.0		RANGE
Color	30					20
bar						20
bar							GAIN
							GAIN
Temp.	20					30
scale							SHIFT
Water	10					40
Water						40
temp.							MODE/
Graph						50	FREQ
Graph	54.0

Water							SNDR
	DGPS 3D						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
	MODE/FREQ 0.0	0	SELECT
	▲		SELECT
	▲		50kHz
	' AUTO CRUISING		50kHz
	' AUTO CRUISING	50
	™ AUTO FISHING		SELECT
	™ MANUAL		200kHz
	™ MANUAL
	▼
		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
		GAIN
	100	SHIFT
	100
		MODE/
		FREQ
	150	SNDR
	150	FUNC

200 kHz

Figure 2-5 Comparisons of

transducer frequencies

Figure 2-3 Normal sounder display

2-2

GP-1850F, GP-1850DF specifications

Furuno is renowned for its high-quality marine electronics, and the GP-1850DF and GP-1850F are no exceptions. These advanced GPS chart plotters are designed to meet the needs of both professional mariners and recreational boaters alike.

The GP-1850DF is equipped with a powerful 12-channel GPS that provides fast and accurate positioning information, while the GP-1850F features a sturdy built-in fish finder, making it ideal for anglers. Both units boast a brilliant color display that enhances visibility in various lighting conditions, ensuring that users can easily read information on the screen, even in direct sunlight.

One of the standout features of these models is their compatibility with a variety of chart formats, including C-MAP, and Furuno’s proprietary raster charts. This flexibility allows users to choose from a broad range of navigational charts, catering to specific regional needs and preferences. The intuitive interface of the GP-1850 series simplifies navigation, offering menu-driven commands and support for multiple languages.

Furuno has integrated advanced sonar technology in the GP-1850F model, including a high-resolution fish finder capable of detecting fish signatures with remarkable precision. The dual-frequency capabilities enable users to switch between higher frequencies for shallow water fishing and lower frequencies for deeper waters. This enriches the fishing experience while improving catch rates.

Moreover, both devices feature a built-in waypoint register, allowing users to store up to 1,000 waypoints, which can be essential for returning to promising fishing spots or navigating back to port. The navigation functions also include routes and track recording, empowering boaters to create custom paths and review their previous journeys.

The GP-1850 series also places a high emphasis on safety, incorporating features like man overboard (MOB) alarms and route alarms to enhance on-water safety. Additionally, they are designed to withstand the harsh marine environment, with waterproof housings that ensure durability during adverse weather conditions.

In conclusion, the Furuno GP-1850DF and GP-1850F models provide an exceptional combination of performance, reliability, and user-friendly features, making them a preferred choice for both fishermen and navigators. Their adaptability in various maritime situations, alongside advanced technologies, cements their reputation as essential tools for successful and safe voyages on the water.

Furuno GP-1850DF manual Sounder Display Description, Normal sounder display indications, markers

Models: GP-1850F GP-1850DF