GMR 21/41 Marine Radar Installation Instructions
5
Powering on the System
To power on the scanner:
1. On the MFD (multi-function display), press the red
Power
key. The scanner is automatically powered on with the MFD. The Welcome
Page appears showing the GMR 21 or GMR 41 as a detected network connection.
2. Press
ENTER
when
I Agree
turns yellow, then press
PAGE
until the Radar Page appears.
3. During Standby mode, a countdown appears on the Radar Page and the status bar as the scanner prepares to operate.
4. With the scanner
Ready
, press and hold the
FCTN
key until
Do you want to begin radar transmission?
appears.
5. When safe (personnel are clear of the radar beam path), highlight
Yes,
and press
ENTER
. The scanner spins up and becomes
operational.
Bearing Offset
It may be necessary to adjust the bearing of the radar picture shown on the screen. First, using a magnetic compass, take an optical bearing of a
stationary target located within viewable range. Measure the target bearing on the radar. If the bearing deviation is more than +/- 1°, then do the
following to correct for the offset:
1. From the Radar Page, press the
ADJ
key to display the Adjustment Menu.
2. From the Adjustment Menu, select
Setup,
and press
ENTER
. Using the
ROCKER
, select the
Advanced
tab.
3. Using the
Rocker
, highlight the
Front of Boat Offset
slider, and press
ENTER
.
4. Press Left on the
Rocker
to adjust to a negative value, or press Right to adjust to a positive value. The preview window changes as you
adjust the slider.
5. Once an offset has been determined, press
ENTER
to save, then press
QUIT
to return to the Radar Page. Your new Garmin marine
radar is now ready to use! Refer to the
GMR 21/41 Owner’s Manual
for details about operating the scanner.
Summary of Contents for GMR 21/41
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