Suppressing Main Bang; Other Settings - Furuno FCR-2127 Installation Manual

3.8

Suppressing Main Bang

If main bang appears at the screen center, suppress it as follows.
1. Transmit the radar on a long range and then wait ten minutes.
2. Adjust gain to show a slight amount of noise on the display.
3. Select the 0.125 nm range. Adjust sea clutter control to suppress sea clutter.
4. Roll the wheel to choose the MBS on the INITIALIZE / Page 1 / Echo Adjust menu (see
previous page).
5. Rotate the wheel to set a suitable value and click the left button so that the main bang
disappears. The setting range is 0 to 255.
3.9

Other Settings

Echo Adjust menu setting
Open the Echo Adjust menu as described on previous page.
Cable att adj
Before adjusting, set the radar as follows:
IR: 2, ES: off, EAV: off, 24nm range, long pulse
(Same as default setting of PICTURE1)
To adjust the cable attenuation manually, choose MANUAL and click the left button. Choose
a value below the letter of MANUAL and rotate the wheel so that noise just appears on the
screen when the gain is set to 80. Default setting is 30 for the antenna cable length of 15m.
The setting range is 0 to 73.
To adjust automatically, choose AUTO and click the left button. It takes about five minutes to
complete the adjustment, after which the radar goes into stand-by.
Radar Initialize
3. SETTING AND ADJUSTMENT
3-13