Simrad RA771UA, Instruction Manual

Page: 33 / 46

Fig. Displacing Scanner Location from Keel
Line to Improve, Visibility. in the Bow
Direction
( 2 )
Making dip angle
The location of the scanner unit must be
sufficiently elevated so as to make a dip angle
(an angle formed by a horizontal line and a
line connecting the antenna
to
the top of the
obstacle)
of
more'than as illustrated.
n
I
fig. 5-6 How to Create a Dip Angle
5.
Select a location where the scanner is least
6. Keep the scanner unit as possible from the
7 . The scanner distance from the display unit should,
affected by smoke or hot blast from the stack.
antenna of a direction finder or a VHF transceiver.
preferably, be within the standard length of
multi-conductor cable. It must never exceed
100
meters.
Note: See the examples on the next page before preparing
the mount base for the scanner unit.