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@ 
Heading 
line off 
setting
Has 
the same 
function as the 
[HL 
OFF] 
key. 
While this switch 
is clicked, the heading lines 
(HL)
display will be turned ofi.
@ 
CPA 
RING indicator 
selection
Turn on 
and off the CPA 
RING display.
When the vector mode 
is TRUE, the CPA RING cannol be turned 
on.
@ 
MAP 
SHrFT
This is used to mode maps 
made 
by users.
@ 
DEPTH
This displays the 
depth 
received 
from external 
devices.
The 
I 
u 
I 
button can be 
used 
to turn on and 
offthe depth 
graph 
display.
@ 
DAY/NIGHT 
setting
This button selects the 
day or 
night mode.  The mode changes each 
time this button is clicked.
There are 
four 
settings: 
DAY1--+ 
DAYZ 
-+ 
NIGHTI 
-+ 
NIGHT2.
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PANEUBRILL 
VIDEO/BRILL 
ARPA setting
The modes PANEL, ViDEO, 
and 
ARPA, which 
adjust 
luminosity, are 
switched.
The mode changes each 
time 
this button is clicked.
There are three settings: 
PANEL-+VIDEO-+ARPA.
@ 
Brillianceadjustment
Each 
time this switch is 
clicked, 
it will 
go 
to the next of four 
(BRILL VIDEO) 
or 
five 
(PANEL,
BRILL 
ARPA) brilliance 
settings.
@ 
Process 
setting function 
(FUNC) 
selection
Sets 
the 
process 
setting 
mode.  OFF, 
FUNC1, 
FUNC2, FUNC3, 
FUNC4, 
or FUNC5 
can 
be
selected.
@, 
@, @ 
, 
@ 
: EBL and 
VRM settings
The 
EBL1, EBL2, VRM1, 
and 
VRM2 switches are used to acquire 
operation rights.
They 
function in the same 
way 
as the EBLI and 2 and VRM1 and 
2 switches 
on the control
paner.
The 
numeric indicator switches 
are used to turn 
on and off the 
various EBLs 
and 
VRMs.
When 
a numeric indicator 
displays 
"OFF," 
that 
means 
the corresponding 
indicator in 
the PPI 
is
off.
The 
switches on the control 
panel 
are used to move the EBLs and 
VRMs.
nm
nm
o
+
When 
ON:  The numeric display is off.
When OFF: 
The numeric 
display 
is 
on.
This is used 
to turn 
ON and OFF either EBL 
or 
VRM operation, 
and turn 
ON and OFF 
the 
display.
The 
function thal 
is valid is indicated 
by the inverted 
display,
EBL 
and 
VRM intersection identification 
marks
2-9