Interphace ULTRASCAN PC90, Operation Manual

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21
Running in PLAYBACK mode will allow you to
practice and to get a feeling for the Ultrascan PC90’s
many features before actually using the system in real
situations on the water. Note: when you play back the
recording, you will not be able to change the range.
However, you will be able to use most of the other
features.
Beam Width
The Ultrascan PC90’s Beam Width is approximately
12 degrees in both the vertical and horizontal scan
modes. The diagrams at right and below show the
approximate width of the vertical and horizontal
scanning beams at different distances from the boat.
The Ultrascan PC90 will generally image features
within the shaded areas.
The Ultrascan PC90 horizontal scan is oriented
approximately ten degrees down from horizontal (see
the diagram below). Thus, the depth to the center of
the beam is approximately 18 percent of the distance
from the boat.
TIP
The width of the 12-degree main beam is
approximately 1/5 of the distance from the boat
Distance Forward
12º Beam
Width
Depth
Width of Acoustic Beam
Horizontal Scan
Ultrascan
PC90 can see
targets within
this area.
Width of 12 Degree Acoustic Beam
Distance
Forward or
Below Boat
Ultrascan can
typically see
targets within
this area.
12 Degree
Cone Angle
250
500
750
1000
210
158
105
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