Simrad NX45 Specifications download pdf (Page 36)

Simrad NX40/45 Installation and Operation Manual36

CAUTION

DANGER

WARNING

Use the automatic

Cruising or Fishing modes

when learning to use the

unit or when travelling at

speed.

9-1 Using the unit

The unit uses a echosounder transducer attached to

the hull. The transducer generates an ultrasonic pulse

(sound that is above the hearing range of the human

ear), which travels down towards the bottom at a speed

of about 1463 m/s (4800 ft/s), spreading out into a

cone shape.

When the pulse meets an object, such as a sh or the

bottom, it is partly reected back up towards the boat

as an echo.

The depth of the object or bottom is calculated by the

unit by measuring the time taken between sending a

pulse and receiving the echo. When an echo has been

returned, the next pulse is sent.

The unit converts each echo into an electronic signal,

shown as a vertical line of pixels.

The most recent echo appears on the extreme right

of the window, with the older echoes being scrolled

towards the left, eventually disappearing off the

window.

The scroll speed depends upon the water depth and

scroll speed setting.

The appearance of echoes shown are affected by:

The unit settings.•

Echoes (different sh types, different bottom types, •

wrecks and seaweed.

Noise (water clarity and bubbles.)•

Cruise, Fishing and Manual Modes

The unit has three echosounder operating modes:

• Cruising mode: Use this when on the move. The

unit automatically adjusts its settings to compensate

for water clarity and to display the bottom.

• Fishing mode: Use this when shing. The unit

automatically adjusts its settings to compensate for

water clarity and to best display sh, the bottom and

other details.

• Manual mode: Use this to ne-tune the unit

settings by hand. Best results are often achieved

in manual mode, but practice and experience are

required to obtain the optimum settings for different

conditions.

Echosounder shnding: Introduction9

1 2 ... 31 32 33 34 35 36 37 38 39 40 41 ... 119 120

Comments to this Manuals

No comments

Simrad NX45 Specifications Page 36

Comments to this Manuals

Related products and manuals for Car navigation systems Simrad NX45