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10 GMR 21/41 Owner’s Manual
basIc oPeratIon > radar tab
Radar Tab
When GMR 21/41 is connected to a Garmin Marine Network
chartplotter, and either the Auto-Detect Services or Radar check
box is selected on the System tab, the Radar tab appears on the Main
Menu.
To access and change a setting on the Radar tab:
1. Press the Setup soft key on the Radar Page to open the Main
Menu. The Radar tab is automatically selected.
2. Highlight the setting you want to change, and then press
ENTER.
3. Press QUIT to return to the Radar Page.
General Sub Tab
Use the General sub tab to select orientation, timed transmit, and
cross-talk rejection. The available General sub tab options are:
•
Orientation—sets the orientation of the Radar Page display.
The settings are Heading Up, North Up, or Course Up.
•
North Indicator—toggles the north indicator arrow on or off.
•
Timed Transmit—used to save power, usually while at anchor.
When Timed Transmit is On, the radar uses the settings in
Timed Transmit XMIT Time and Timed Transmit STBY
Time elds. When set to Off, these elds are unavailable.
• Timed Transmit XMIT Time—sets the amount of time (in
minutes) for which the radar transmits. If set to 01 min, the
radar transmits for one minute before switching to standby
for the amount of time entered in the Timed Transmit STBY
Time eld.
•
Timed Transmit STBY Time—sets the amount of time (in
minutes) that the radar is in Standby Mode. If set to 10 min,
the radar is in Standby Mode for 10 minutes before switching
to transmission for the amount of time entered in the Timed
Transmit XMIT Time eld. When the radar is in Standby
Mode, the scanner does not rotate or transmit; however, power
is still applied to the Magnetron, eliminating the need for a
warm-up cycle.