Lowrance electronic LRA-1000 - Manual (Page 20)

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3. Use ← → to adjust the position of the green heading line, so its line
to the reference point's radar image matches your bow's actual line to
the reference point.
4. Press
EXIT
to remove the heading line arrows from the display.
Adjust Transmit Off Zone
The Transmit Off Zone is a feature that allows you to select an area in
the radar's 360
° transmission path where the radar beam will not be
transmitted.
WARNING:
ALL targets inside the Transmit Off Zone will NOT be
displayed on the screen. This will create a blind spot
within the off zone!
Transmit Off Zone is shown in bright red; the remaining area of the
PPI is considered the Transmit Zone. Color is exaggerated here for
clarity; on-screen, the off zone actually appears in a dimmer shade so
as not to distract from target images in the transmit zone. Dialog box
values at upper right are in degrees, relative to the heading line.
Caution:
Preventing the main beam or lobe from transmitting through the
Transmit Off Zone will diminish the amount of radiation
broadcast in that area, but it WILL NOT protect you from radia-
tion transmitted by the side lobes of the radar antenna.
To avoid radiation exposure, be sure to follow the installation
instructions, which require the radar to be installed at least 1
foot above all persons.
Transmit Off
Zone
Transmit
Zone