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Manual MBS Adjustment
Reduce the main bang (black hole), which appears at the display center on short ranges, as fol-
lows.
1. Transmit the radar on the shortest range.
2. Open the Installation menu and select MBS Adjust.
3. Press the ENTER key to show the setting window.
4. Press the cursor pad to reduce the main bang (between 0 and 25).
5. Press the ENTER key to finish.
Video Initial Adjustment
After you complete the automatic installation setting, tune the video signal if necessary.
1. Transmit the radar and set the radar as follows.
• Gain : 85 to 90
• A/C Sea : zero
• A/C Rain : zero
• Echo Average : OFF
• Noise Rejector : OFF
• Interference Rejector : 2
2. Open the Installation menu and select Video Init Adjust.
3. Press the ENTER key to show the setting window.
4. Press the cursor pad to show some white noise on the display. The setting range is 0 to 31. A
large value increases the gain.
5. Press the ENTER key to finish.
Note: If the display unit is used as a remote display, set "Input Source" to "Slave". Do the Video
Initial Adjust as shown in the above procedure. The echo presentation on the remote display is
like the presentation on the main display.
ARPA Adjustment
During the sea trial, adjust the threshold level of the ARPA for short pulse, middle pulse and long
pulse.
• Default setting is 2.
• If the ship echoes are difficult to acquire at the setting 2, set to 1.
• If the ARPA symbol moves to other echo at the setting 2, set to 3.