Display Indications And Markers; Turning The Radar On And Off - Furuno 841 MARK-2 Operator's Manual

2.2 Display Indications and Markers

Range
Range ring interval
Presentation mode
Off center
Pulsewidth
Heading marker
Guard zone
area
Cursor
EBL

2.3 Turning the Radar On and Off

Turning the radar on
Press the [POWER] key to turn the radar on
or off. The control panel lights and a timer
displays the time remaining for warm up of
the magnetron (the device which produces
radar pulses), counting down from 2:30 to
0:01.
Note: When the power is reapplied within a
certain amount of time and circuits remain
charged, the warmup process is skipped—you
can transmit immediately.
4
HDG 326.8°
0.5
1.5
NM
CU
OFF
CENTER
SP
VRM EBL
0.675 220.9°
NM R
EBL
VRM
bearing
range
Figure 2-2 Display indications
Heading (requires
heading data)
TRAIL AUTO
15S
0:00
G (IN)
FTC1
ES
IR
}
+ CURSOR
0.646 308.7°
NM R
Cursor Cursor
range bearing
CAUTION
The radar antenna emits high frequency
radio radiation which can be harmful,
particularly to your eyes. Never look
directly at the antenna from a distance of
less than two feet when the radar is in
operation. Always make sure no one is near
the antenna before turning on the radar.
Note: When the heading signal is lost, the HDG
readout at the top of the screen shows ***.*.
This warning stays on when the heading sig-
nal is restored to warn the operator that the
readout may be unrealiable. The warning may
be erased by pressing the [DISP MODE] key,
Echo trail, AUTO tuning
Echo trail elapsed time,
echo trail time, tuning indicator
Guard zone
Fast Time Constant
(rain clutter suppressor)
Echo stretch
Interference rejector
Range ring
VRM
Range and bearing to cursor
or cursor position in latitude
and longitude may be displayed
by pressing the [HM OFF] key.