Ninglu DS302 Manual de usuario

7-inch Dual-channel

Navigation Sounder

DS302

Operation & Installation Manual

Document: NLT-DS302-SSEN

Edition: V130815

Contents

Working Principle .......................................................................................3

Working Principle of the Sounder..........................................................3

Screen Display ........................................................................................3

Introduction.................................................................................................4

Screen......................................................................................................4

Operation.....................................................................................................5

Keyboard..................................................................................................5

Power ON/OFF...................................................................................5

Brightness .........................................................................................5

GAIN...................................................................................................5

RANGE...............................................................................................5

MODE.................................................................................................5

MOVE .................................................................................................5

MENU .................................................................................................5

Operation.....................................................................................................6

Installation...................................................................................................7

Host installation ......................................................................................7

Considerations........................................................................................7

Installation...................................................................................................8

Transducer installation...........................................................................8

Connection ..............................................................................................8

Technical Parameters.................................................................................9

Working Principle

Working Principle of the Sounder

Screen Display

The ultrasonic wave is sent and received repeatedly by the sounder. The latest echo

is recorded as a line on the far right of the screen. The image is consisting of the

moving-to- left echo.

The acoustic velocity is 340m/s in the air and 1,500m/s

in the water. The acoustic time is one second during the

round-trip distance of the underwater 750m. So, the

target depth can be calculated by measuring the

round-trip time of acoustic wave (Fig. 1).

Due to ultrasonic frequency is higher than that of the

sound waves by human-ear hearing, ultrasonic is

suitable for underwater detection. The ultrasonic

transducer of the sounder can launch and receives the

ultrasonic wave. Through recording, the underwater

target is displayed on the LCD screen and the water

depth is calculated for display.

The discontinuous yellow line is the

time scale of 30 seconds. Under the

time scale, the horizontal line is the

transmitting wave. Shown in Fig. 2, the

three spot may be the shoal. Under shoal,

there are the water-button wave and

second-trace echo, which depth is the

twice of the water-button wave depth. The

water button is harder, the echo is

stronger and thicker.

Fig. 1

Fig. 2

Introduction

DS302 dual-channel echo sounder（200kHz & 200kHz）is of high sensitivity and

advanced detecting software which can display the water bottom landform, depth and

figures accurately. With 7 inch color TFT LCD screen of high resolution (480X234 Pixel), it

is easily operated and used for ship navigation.

The dual channel gain can be adjust independently and adapted to the unbalanced

conditions of two transducer signals of the fore and after ship. The auto range can also

choose to track the stable measuring channel. It can timely, accurately and steadily

measure and display the underwater topography, water depth and the object shape.

Screen

①Depth ②Time Scale（Send a 30-second yellow horizontal line each 30 seconds）

③Basic Range ④Color Code Level ⑤Echo

Operation

Keyboard

Power ON/OFF

Switch on/off the power supply

Brightness

Adjust the LCD brightness (LCD backlight)

GAIN

【Gain+】&【Gain-】

In single channel model，set gain by pressing【Gain+】&【Gain-】directly.

In dual channel model, using 【Menu】to adjust gain value.

RANGE

【Range▲】&【Range▼】

Press【Range▲】&【Range▼】directly to adjust basic depth range, while theAuto range is

off (set in Menu).

MODE

Press【MODE】repeatedly to choose among three display model: Channel 1, Channel 2,

Dual-channel.

MOVE

The picture speed function is to set the screen frame rolling speed based on per ping of

transmission. Press【MOVE】repeatedly to choose among speed：1/4、1/2、1/1、2/1、4/1.

Press【Menu】into menu.

【▲】: UP 【▼】: DOWN

【▲】: LEFT 【- 】: RIGHT

Operation

GAIN_1

Gain for channel 1：01-20

GAIN_2

Gain for channel 2：01-20

Alarm

Set alarm depth: OFF/0.4-10m

Buzzer

Turn on/off the alarm buzzer

Echo LEVEL

Set echo colors: 3-8

Auto Range

Auto range：OFF, Track 1 (channel 1), Track 2 (channel 2)

When auto range is on, range cannot be adjusted manually.

Output

Power

Power output：BIG/SMALL

Background

Set background color：Blue/Black

Press［OK］

to quit

Save all setting and quit form menu

Installation

Host installation

The host installation can be in the type of Hung、Table and Flush.

Considerations

1. The instrument should avoid direct sunlight, shock and vibration.

2. The24 v regulated power supply should be used to avoid burning machine.

3. Main instruments should be far away from the equipment with electromagnetic radiation,

such as motor and generator.

Unit: mm

Installation

Transducer installation

Transducer is a sophisticated front-end signal sensor. Its transport and installation should be

careful to avoid pressure, drop or working in the air and the surface cannot be attached by

paint or parasites.

The installation location of the transducer is very important, which directly influences the

measuring accuracy. Transducer shall be installed where the ship bottom is relatively flat

and away from the vibration zone, such as the propeller. And the surface should be

horizontal to ensure uniform water flow around transducer when navigating. And the

transducer shall not be surface or contact the vortex flow.

Dual channel sounder can be used as water depth monitoring at the front or rear of the ship.

When the bare ship fast forward, the prow will slightly raise, which may result in unstable

readings of the transducer. Please manually choose reading stable channels as automatic

range tracking target.

Connection

Transducer Interface NMEA Output Power Supply

CH1/CH2

Technical Parameters

Item

Specification

Display

7 inch TFT LCD，480×234 pixel

Frequency

Dual-channel 200kHz

Range

2.5-200m

Min. depth

detectable

0.3m

Auto range

Select the auto range of tracing CH1/CH2

Output power

200kHz, 300W

Time Scale

30-second yellow time scale

Echo Levels

8 colors signal levels

Alarm Types

Shallow

Alarm Beeper

Buzzer(switch able),flashing

Power supply

DC24V（19~33V）,20W

Temperature

0~50℃，IEC 60945

Water proof

IP52

Weight

1.5kg

size

Width 188mm、High 166mm、Depth 65mm

（Not include holder）

Installation

Hung、Flush (Window size 168×150mm）

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