Wesmar SS395, Руководство по установке и эксплуатации

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the probability of detection of small targets.
LIMITER
The third of three filters. The limiter can be ON or
OFF. Turning ON the limiter will remove inter-
ference from other sonar/sounder equipment from
the screen. Objects close to the bottom or on the
bottom may not mark with the limiter ON. The
limiter should only be used when large targets are
of interest.
THRESH
Or threshold. Selections are from 1 to 4. If set
too high, only strong targets will be detected. If
the threshold is set low the smallest of echoes will
be detected. For bottom typing a low threshold
setting is desirable.
DELETE
Delete will remove targets colors weak to strong.
CLIP
Clip is a color stronger then red when selected.
When bottom typing make the following settings.
Select the clip color. Lower the threshold to 1.
Turn ENHANCE to OFF. Turn FILTER to 5. When
over hard bottom adjust the near and far gains so
the bottom just marks in the clip color. All other
bottom types will mark in cooler colors.
BACK
Back or background is the color behind the targets
on the screen. 1=Black, 2=Blue and 3=White.
Black can be used at night and during the day. At
night the black background emits no light and the
targets stand out in fine detail. For nighttime view -
ing it is recommended to lower the brightness of
the text or words on the right of the screen. To dim
the text go to the LOCAL page and increase the
number for TEXT. Blue and White are normally
day time screen. A background color will increase
the contrast making the target much easier to view.
If small targets are of interest try the white back-
ground and select 4 to 6 on PALETTE.