User Manual

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5.3.3 Adjusting the brilliance of screen and key-backlight
xxx = Keys to press
(1) Press the "BRILL" key. (Bar and figure indicating brightness, and figure indicating backlight appears on the
screen.)
(2) Select brilliance or key-backlight with the up-down cursor.
(3) Adjust each item with the control knob.
(4) When the adjustment is finished, press either the "BRILL" key or the "ENT" key to exit from the adjustment screen.
(Pressing some other key after adjustment will lead to the function of the pressed key.)
BRIL
→
Control knob (Adjustment of brilliance)
→
BRIL or ENT
→
Up/Down (Adjustment of brightness, panel)
→
Other function key Shift to other functions
5.3.4 Changing the range scale (RANGE UP, RANGE DOWN)
Pressing the RANGE UP key increases the range scale and the RANGE DOWN key decreases the scale.
RA53
RANGE 0.125 0.25 0.5 0.75 1.5 3 6 12 24 48 64
Number of rings 2 2 2 3 6 6 6 6 6 6 4
Range ring interval 0.0625 0.125 0.25 0.25 0.25 0.5 1 2 4 8 16
RA54
RANGE 0.125 0.25 0.5 0.75 1.5 3 6 12 24 48 72
Number of rings 2 2 2 3 6 6 6 6 6 6 6
Range ring interval 0.0625 0.125 0.25 0.25 0.25 0.5 1 2 4 8 12
5.3.5 Automatic adjustment (AUTO)
Pressing the AUTO key sets the up GAIN, STC and FTC to optimized level automatically.
If you press the AUTO key while GAIN, STC, or FTC are set in manual mode, they will all be switched to AUTO or
HBR (Harbor) mode.
Continual pressing of the AUTO key brings in the AT1, AT2 and HBR signs in circulating sequence. These
signs mean the degree of automatic processing, selected according to the navigational situation. To cancel the
AUTO mode, press the STC key. The GAIN, STC and FTC controls will be brought to manual mode. Note that
pressing either the GAIN or FTC key sets only the pressed function to the manual mode.
AT1:
Used in navigating congested waters such as harbors, narrow channels, etc. The controlled condition is
that the weather and sea clutter components are expertly suppressed, while the receiver gain is slightly
reduced.
AT2:
Used in the open sea navigation. The controlled condition is similar to that of AT1 while the receiver gain
is increased adequately.
HBR:
Used in bay areas, inlets, or harbors. In this mode the STC will be set to semi-manual mode and FTC in
manual mode. To set up the degree of STC, enter the HARBOR of ADJUST menu.
Note) Refer to "Setting STC circuit (STC)" in section 5.5.4.5.4(6).
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HU
BRILLIAMCE 50
ST’BY
+
KEY BACKLIGNT 4