Furuno 1834C-BB ユーザーズマニュアル

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2. RADAR OPERATION 
 
2-18
2.18.2  Starting echo trails   
1.  If not displayed, press the HIDE/SHOW key to show the radar soft keys. 
2.  Press the D: TARGET soft key.   
3.  Press the A: TRAIL soft key. 
4.  Press the A: TRAIL ON/OFF soft key to select ON.   
5.  Press the E: RETURN soft key twice to finish. 
 
“TRAIL,” the echo trail time selected and elapsed time appear at the top right-hand corner 
of the display. Then, afterglow starts extending from all targets. Trails are restarted when 
the range or mode is changed and zoom or shift is turned on. 
 
For continuous trails, the maximum continuous trail time is 99 minutes and 59 seconds. 
When the elapsed time clock counts up to that time, the elapsed time display resets to zero 
and trails begin again. 
 
To turn off echo trail, press the A: TRAIL ON/OFF soft key to select OFF at step 4 in the 
above procedure. 
 
2.18.3 Trail gradation 
The echo trails can be shown in single or multiple gradations. Multiple gradation paints the 
trails thinner with time, like the afterglow on an analog PPI radar.   
 
1.  If not displayed, press the HIDE/SHOW soft key to show the radar soft keys. 
2.  Press the D: TARGET and A: TRAIL soft keys. 
3.  Press the C: GRAD soft key to select SINGLE or MULTI as appropriate. 
4.  Press the E: RETURN soft key twice to finish. 
Multitone                             Monotone
 
Multitone and monotone trails 
 
2.18.4 Trail color  
Trails may be shown target trails in blue, yellow, green or white. 
 
1.  If not displayed, press the HIDE/SHOW key to show the radar soft keys. 
2.  Press the D: TARGET, A: TRAIL and D: TRAIL COLOR soft keys in that order. 
TRAIL COLOR
BLUE
YELLOW
GREEN
WHITE
 
Trail color window 
3. Use the Trackball to select the color desired, then press the C: ENTER soft key. 
4.  Press the E: RETURN soft key twice.