Sperry Marine Visionmaster FT ECDIS, Руководство пользователя

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Radar ECDIS User Guide
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scale ratio and trail type selected. If Permanent Trails mode is selected the
trails do not decay.
When switching between trails length it takes as long as the new time
selection for the trail time to be representative. For example, changing
from 3 minutes on
Long to 60 seconds on Short will take 60 seconds for
the trails to represent how far the targets have moved. During this period
the trails displayed are not representative of the displayed trail time and so
the trail time is shown in the warning colour (yellowish-orange).
The table below lists the long and short maximum trail times, relative to the
scale ratio.
Scale Ratio Short Trail time Long Trail time
1:3,000 10 sec 30 sec
1:4,000 15 sec 45 sec
1:15,000 30 sec 1 min 30 sec
1:50,000 and above 2 min 6 min
Dual Radar – Video
On a dual radar system the Video window
includes separate tabs for Channel 1 and
Channel 2 where specific selections of
controls and Gain/anti-clutter adjustments
can be made for each channel.
The video processing controls and trails
settings are the same as described in the
`Video’ section.