Furuno FA-2805, Operator'S Manual

Page: 16 / 169

1-1
1. OPERATION
WARNING WARNING
Before turning on the radar, make sure that
there is no one near the antenna unit.
Serious injury or even death may result if
a rotating antenna strikes someone
standing nearby.
1.1 Turning on the Power
The POWER switch is located at the lower
right corner of the display. Push it to switch
on the radar set. To turn off the radar, push
it again; the switch will extend. The screen
shows the bearing scale and digital timer
approximately 15 seconds after power-on.
The timer counts down three minutes of
warm-up time. During this period the mag-
netron, or the transmitter tube, is warmed
for transmission. When the timer has
reached 0:00, the legend STBY appears
indicating that the radar is now ready to
transmit pulses.
POWER
ON
OFF
Power
switch
Location of power switch
In warm-up and standby condition, you
will see the message BRG SIG MISSING.
This is normal because a bearing signal
is not yet generated when the antenna is
not rotating. ON TIME and TX TIME val-
ues shown at the bottom of the screen
are the time counts in hours and tenths
of hour when the radar has been pow-
ered on and transmitted.
1.2 Transmitter ON
When the STANDBY status is displayed
on the screen, press the Transmit switch
labeled ST-BY/TX on the control panel of
the display unit.
The radar is initially set to previously used
range and pulsewidth. Other settings such
as brilliance levels, VRMs, EBLs and
menu option selections are also set to
previous settings.
The Transmit switch toggles the radar be-
tween STANDBY and TRANSMIT status.
The antenna stops in STANDBY status
and rotates in TRANSMIT status.
Notes:
1) If the antenna does not rotate in
TRANSMIT status, check whether the
antenna switch in the tuning compart-
ment is in the OFF position.
2) The magnetron ages with time result-
ing in a reduction of output power. It is
highly recommended that the radar be
set to STANDBY status when not used
for an extended period of time.
Provided that the radar was once in use with the
transmitter tube (magnetron) still warm, you can
turn the radar into TRANSMIT condition without
3-minutes standby. If the Power Switch has been
turned off by mistake or the like and you wish to
restart the radar promptly, follow the steps
below:
• Turn on the Power Switch not later than 5 sec
after power-off.
• Press the ST-BY switch in the tuning
compartment.
• Press the Transmit Switch STBY/TX.
ORIGIN
MARK
VECTOR
TRUE/
REL
VECTOR
TIME
ST-BY switch
Antenna switch
Quick Start