Furuno MFD8 Guía Del Usuario
6. Radar
6-2
6.2
How to Adjust the Gain
The GAIN/TX key adjusts the gain (sensitivity) of the radar receiver. This key operates
like the volume control of a broadcast receiver, which amplifies received signals.
like the volume control of a broadcast receiver, which amplifies received signals.
The correct setting shows some background noise on the screen. If you do not use
enough gain, weak echoes are erased. If you use more gain than necessary, the back-
ground noise hides both weak and strong targets.
enough gain, weak echoes are erased. If you use more gain than necessary, the back-
ground noise hides both weak and strong targets.
Automatic gain adjustment
1.
Press the GAIN/TX key to show the Gain-Sea-Rain adjustment window. (You can
also show the window if you put the cursor near the site of the window.)
also show the window if you put the cursor near the site of the window.)
2.
[Gain] is selected. Rotate the RotoKey to the left until "Auto" appears in the bar.
The Gain "A" icon is green when the automatic gain is active.
Note: The Gain-Sea-Rain pop-up allows you to switch between automatic and manual
gain adjustment as shown in the procedure which follows.
gain adjustment as shown in the procedure which follows.
1.
Show the Gain-Sea-Rain adjustment window.
2.
Push the right-click button to show the Gain-Sea-Rain pop-up menu.
3.
Rotate the RotoKey to select [Auto Gain] then push the key to activate or deacti-
vate the Auto Gain.
vate the Auto Gain.
Manual gain adjustment
1.
Press the GAIN/TX key to show the Gain-Sea-Rain adjustment window. (You can
also show the window if you put the cursor near the site of the window.)
also show the window if you put the cursor near the site of the window.)
2.
[Gain] is selected. Rotate the RotoKey to adjust the gain level. The length of the
bar increases or decreases when you rotate the key.
bar increases or decreases when you rotate the key.
3.
Push the RotoKey to validate the setting and close the window.