User's Manual

ED 3038 G 232 / 01 (2002-06)
Operating Instructions
2 Basic Settings; General Remarks about Operating
2.4 Degaussing
b_r1_e12.fm / 21.06.02
23
RADARPILOT / CHARTRADAR
2.4 Degaussing
This section is relevant only for monitors with cathode ray tubes, and not for monitors with flat screens.
As a result of changes in the magnetic field at the location of the monitor, the shadow mask of the
cathode ray tube might become magnetised, which leads to discolouration over the entire screen or in
parts of the display. Because, in the earth’s magnetic field, the ship itself acts as a magnet, such changes
in the magnetic field can also be caused by changes in the ship’s course. The demagnetisation which
then has to be performed on the shadow mask ("degaussing") can be performed manually.
☞ If this does not lead to success, the trouble might also be due to magnetic components or magnet-
ised housings, which must then be removed from the environment of the monitor or degaussed.
Manual Degaussing
Manual degaussing is performed by pressing of the
DEGAUSS key on the monitor. On monitors which do not
have this key, a corresponding button is active:
Click on the BRILL button and then on the DEGAUSS MAN
area.
Automatic Degaussing
With particular types of monitor, it also possible to set auto-
matic degaussing. When the autodegauss function is switched
on, degaussing takes place at adjustable intervals of time, and
also when the course has been changed by a predefined
amount after the last degauss.
Switching the Autodegauss Function On and Off
Click on the BRILL button and then on the AUTO DEGAUSS
area.
Setting the Autodegauss Function
1. Click on the BRILL button, and then click on the AUTO
DEGAUSS button by means of MORE.
2. Click on the TIME area by means of the MORE key; then,
in the menu that is opened as a result, either
a) click on the desired time interval, or
b) click into the (vertical) bar-area, drag the bar to the
desired value, and press the DO key, or
c) click into the upper numerical area and enter the
value by means of the virtual keyboard.
3. Click on the TURNING field by means of the MORE key;
then, in the same way, input the course change for which
automatic degaussing is to take place.
BRILL
1.DO
MAN
DEGAUSS
2.DO
BRILL
1.DO
MAN
DEGAUSS
AUTO
DO
AUTO
DEGAUSS
AUTO
10 min
20 min
30 min
60 min
10 min
OFF
120 min
180 min
2.a
2.b
DO
DO
2.c
DO
TIME
TURNING
1.MORE
2. DO
AUTO TIME