Lowrance electronic lra-1800 Manual Do Utilizador

8 

We will set them up in that order, but before making any adjustments, 

make sure the display is set to a range of 0.125 nautical miles and that 
Gain, Anti-Sea Clutter (STC), Anti-Rain Clutter (FTC) and Trigger De-

lay all have been set to zero percent. 
Trigger Delay Preparation 

1. To reset range to 0.125 nm, make sure you are on the Radar Only 

page and press 

.  

2. Use 

↑ ↓  to select 

 and press 

, which will call up the 

Radar Range list. Press 

↑ to select 0.125 nm and press 

. You also 

can set the range to 0.125 nm from the radar screen by using the 

 

and 

 keys. 

1. To set Gain to zero, press 

, select 

 and press 

.  

2. Press 

↓ until the Gain is set to zero percent. Press 

. (Notice the 

corresponding value in the upper right-hand corner of the screen.)  

NOTE: 

When adjusting Gain back to a useable level, increase the level un-

til you see a light peppering on the display. Also remember, you will 

have to adjust gain every time you change ranges. 

1. To set Anti-Sea Clutter to zero, press 

, select 

 and press 

.  

2. Press 

↓ until the Anti-Sea Clutter is set to zero percent. Press 

. 

(Notice the corresponding value in the upper right-hand corner of the 

screen.) 

1. To set Anti-Rain Clutter to zero, press 

, select 

 and press 

.  

2. Press 

↓ until the Anti-Rain Clutter is set to zero percent. Press 

. 

(Notice the corresponding value in the upper right-hand corner of the 

screen.) 

1. To set Trigger Delay to zero, press 

, select

 and 

press 

.