Furuno MODEL 1622 - Manual (Page 11)

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1.3 Turning the Radar On/Off
The [POWER] key turns the radar on/off. When
turning on the power, the control panel lights and
the timer displays the time remaining for warm
up of the magnetron (device which transmits
radar pulses), counting down from 1:00 to 0:00.
Provided that the radar was once in use with
the transmitter tube (magnetron) still warm,
you can turn on the radar into TRANSMIT
status without the one-minute stand-by.
If the power switch has been turned off by
mistake and you want to restart the radar
promptly do the following:
1. Press the [POWER] key not later than five
seconds after power-off.
2. Press the [TX] key. The radar is restored
for full operation.
Quick Start
1.4 Transmitting, Stand-by
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.
Press the [TX] key to transmit. Echoes appear in
four levels of digitized video according to echo
strength. Note that when a target is beneath a
marker (VRM, EBL, heading marker, range ring)
the part of the marker where the target lies is
displayed in reverse video.
Note: If you press the [TX] key before the
indication ST-BY appears, the buzzer sounds
and the radar does not transmit pulses.
When you won’t be using the radar for an
extended period, but you want to keep it in a
state of readiness, press the [TX] key to set the
radar in stand-by.
1.5 LCD Tone and Brilliance
1. Press the [TONE] key. The dialogue shown
in Figure 1-3 appears.
TONE: 12
LOW HIGH
BRILL: 3
LOW ▼ ▲ HIGH
▲
▲
Figure 1-3 Dialogue for adjustment of
LCD tone and brilliance
2. Press or or the [TONE] key to adjust
tone; ▲ or ▼ to adjust brilliance.
The dialogue for adjustment of tone and
brilliance is automatically erased when there is
no TrackDisk operation for about 10 seconds. To
erase it more quickly, press the [TONE] key after
making the adjustment.
1.6 Selecting the Range
The range selected automatically determines the
range ring interval, the number of range rings
and pulse repetition rate.
Press the [+] or [-] key to select a range. The
range and range ring interval appear at the top
left corner on the screen.
045.0
°
3.35 NM
Range
Range ring
interval
6.0 NM
2.0
Figure 1-4 Location of range and range
ring interval indications