Simrad SP270 Manual de Instalação descarregar pdf (Página 112)

Simrad SP 270

Self -- no ise,

test '

In order to make a self-noise test of the sonar installation

, start

up the sonar and make the following settings

in the menu:

RANGE......

GAIN. . . . . . . :

MODE. . . .

. . . :

PULSE FORM. . :

TX POWER...

PING SECTOR:

TVG. . . . . . . . :

AGC. . . . . . . . :

RCG. . . . . .

. . :

PP FILTER..

COLOURTHRES:

DISPLAYGAIN:

2500 M

BOW UP

CW-NORM

OFF

OMNI

OFF

Now, when entering the TEST in the menu

, the text ECHO

LEVEL will be be followed by the dB

value of the self-noise.

If noise is shown on the display,

turn the white audio line

with one of the two manual

training buttons (the lower

buttons on the right-

hand side) to the noisy area

on the

display.

Write measured echo

level here:.................................

dB.

The self-noise level should be -

35:1:: 3' dB.

Switch OFF the Sonar Control Unit.

160573/A

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Simrad SP270 Manual de Instalação Página 112

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