Automatic Sounder Operation | Furuno GP-1850F, GP-1850DF guide

2.5Automatic Sounder Operation

Automatic sounder operation is useful when you are preoccupied with other tasks and do not have time to adjust the display.

How the automatic sounder works

The automatic sounder function automatically selects the proper gain, range scale and clut- ter suppression level according to depth. It works as follows:

•Range changes automatically to locate the bottom on the lower half of screen. It jumps to one step shallower range when bottom echoes reach a half way point of the full scale from top and to one step deeper range when they come to the lower edge of scale.

•The gain is automatically adjusted to dis- play the bottom echo in reddish brown (de- fault color arrangement).

•Clutter, which suppresses low level noise, is automatically adjusted.

Two types of automatic sounder modes

Two types of automatic sounder modes are available: CRUISING and FISHING. CRUIS- ING is for tracking the bottom, and FISHING is for searching fish schools. CRUISING uses a higher clutter rejection setting than FISH- ING therefore it is not recommended for fish detection - weak fish echoes may be erased by the clutter suppression circuit.

How to enable automatic sounder operation

1.To show the mode/freq window:

Normal sounder display: Press the soft key MODE/FREQ.

Plotter/sounder display: Press the soft key SNDR, MODE/FREQ in order.

Dual-frequency display: Press the soft

key MODE.

MODE/FREQ

▲

'AUTO CRUISING ™AUTO FISHING

™MANUAL

▼

Figure 2-14 Mode/frequency window

2.Press ▲ or ▼ to select AUTO CRUISING or AUTO FISHING.

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

2.6Manual Sounder Operation

Manual operation is useful for observing fish schools and bottom using fixed gain setting.

The gain, range and range shifting functions used together give you the means to select the depth you can see on screen. The basic range can be thought of as providing a “win- dow” into the water column and range shift- ing as moving the “window” to the desired depth.

Selecting the manual mode

1.Press the appropriate soft key to show the mode/freq window.

2.Select MANUAL.

3.Press the soft key RETURN.

2-5

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-1850F, GP-1850DF manual Automatic Sounder Operation, Manual Sounder Operation

Models: GP-1850F GP-1850DF