Furuno FR-8251 Manual De Usuario
1 – 4
1.3 Selecting Range
The range selected automatically determines the
range ring interval, the number of range rings and
pulse repetition rate, for optimal detection capa-
bility in short to long ranges.
range ring interval, the number of range rings and
pulse repetition rate, for optimal detection capa-
bility in short to long ranges.
0.75NM
0.25
SP
0.25
SP
Range
Range
rings
rings
Range
Range ring
interval
Pulselength
Figure 1-4 Location of range, range ring
interval and pulselength indications
Procedure
Press the RANGE key at + or –. The range, range
ring interval and pulselength appear at the top
left corner of the display.
ring interval and pulselength appear at the top
left corner of the display.
1.1 Turning the Radar On/Off
Before turning on the radar, make
sure no one is near the antenna unit.
Serious injury or death can result if
a rotating antenna strikes someone
standing nearby.
sure no one is near the antenna unit.
Serious injury or death can result if
a rotating antenna strikes someone
standing nearby.
DANGER
Turning on the radar
Press the POWER key. The control panel lights
and a timer displays the time remaining for warm
up of the magnetron, counting down from 3:00
to 0:00.
and a timer displays the time remaining for warm
up of the magnetron, counting down from 3:00
to 0:00.
Turning off the radar
Press POWER and ST BY/TX keys together.
1.2 Transmitting, Stand-by
Transmitting
After the power is turned on and the magnetron
has warmed up, ST-BY (Stand-By) appears at the
screen center, indicating the radar is ready to
transmit radar pulses. In stand-by the radar is
available for use at any time.
has warmed up, ST-BY (Stand-By) appears at the
screen center, indicating the radar is ready to
transmit radar pulses. In stand-by the radar is
available for use at any time.
Press the ST BY/TX key to transmit. The radar
displays echoes in eight intensities according to
echo strength.
displays echoes in eight intensities according to
echo strength.
Stand-by
When you won’t be using the radar for an ex-
tended period, but you want to keep it in a state
of readiness, place it in stand-by by pressing the
ST BY/TX key. The display shows ST-BY.
tended period, but you want to keep it in a state
of readiness, place it in stand-by by pressing the
ST BY/TX key. The display shows ST-BY.