NorthStar 6000i Installation Manual page 31

To properly and efficiently calibrate the radar, it is important to follow the instructions below in the
order they are listed. The major steps are as follows:
1. Put the radar in a known standard state to prepare for calibration.
2. Set the Trigger Delay.
3. Tune the radar.
4. Set the Heading Calibration.
5. Set the Gain.
Follow this procedure exactly as written for the fastest and most accurate calibration. After the
calibration has been completed, the gain may be adjusted freely by the user to obtain the most
useful picture.
Important: During the initial calibration of the unit, follow the entire procedure given below, in the
order stated. To make a later adjustment to the calibration, always follow the Preparation for
Calibration section below; then you may skip to the section needing adjustment.
Preparing for calibration
Note: A Northstar 958 or 6000i is shipped from the factory with all the following settings already in
place. If the unit has been operated after being removed from the shipping container, it is necessary
to check all of the settings listed below. Any adjustments that are already correct can be skipped over.
1. Press CHART and Split . Press the Radar menu key to select the full-screen radar display.
At this point, you should see range rings
displayed on the screen. You may see the
transmitter warm-up countdown displayed
(updated every five seconds), followed by the
message "Radar is OFF. "
If no messages or range rings appear, then
the radar control box is not powered or is not
properly interfaced to the navigator. Check
power wiring, interface wiring, and
navigator configuration as described above.
2. Press Adjust radar .
3. Make sure that the Rain Clutter key is displayed in the upper right corner of the screen. If
not, press Next Page until it appears.
First, we'll set the Rain Clutter and Sea Clutter to zero, and the Gain to 25 . If these values are
already correct, you can skip to step 16.
4. Press Rain Clutter.
5. Press the " 0 " key on the keypad twice to set the rain clutter value to zero.
6. Press Sea Clutter .
Press the " 0 " key on the keypad twice to set the sea clutter value to zero.
7.
8. Press Gain.
9. Press " 2 " and " 5 " on the keypad, to set the gain to 25.
Now, we'll set the scale to 1/8 nm.
Radar Installation Manual, Rev. E1
SECTION FOUR: Setting up the radar (older navigator software)
Page 27