Anritsu RA77OUA, Instruction Manual

Page: 33 / 52

HEAD D I R E C T I O N
ADJUSTMENT
t o t h e r e a l b e a r i n g i n t h e SETUP mode.
*
T a r g e t c a t c h i n g and measurement
c l e a r l y observed on t h e r a d a r w i t h i n a r a n g e of 0 . 5 t o 1 . 0
T h i s a d j u s t m e n t
i s
t o
a d j u s t t h e r a d a r b e a r i n g
F i n d
a
small target i n t h e head d i r e c t i o n which i s
Measure t h e t a r g e t b e a r i n g a g a i n s t t h e s h i p ' s head
w i t h a compass.
S e t t h e
EBL
t o t h e b e a r i n g measuered from t h e t a r g e t .
*
Adjustment
-E n t e r t h e menu by p r e s s i n g
t h e
b r i l l i a n c e key more
t h a n 3 seconds.
p r e s s i n g t h e r a n g e and press t h e b r i l l i a n c e
key
t o
e n t e r t h e u n d e r l i n e d menu.
Turn
t h e c o n t r o l knob
t o set
t h e
t a r g e t on t h e EBL.
R e t u r n
t o
t h e radar s c r e e n
P r e s s t h e b r i l l i a n c e key
t o
r e t u r n t o t h e menu, or
p r e s s t h e
OPERATE
key t o r e t u r n
t o
t h e r a d a r s c r e e n .
( 2 ) T I M I N G ADJUSTMENT
T h i s
a d j u s t m e n t i s t o a d j u s t
t h e
r a n g e on t h e r a d a r
s c r e e n t o t h e a c t u a l r a n g e .
S e t t h e d e t e c t i o n range t o 0 . 1 2 5
or
0 . 2 5
NM
and
o p e r a t e t h e r a d a r , and e n t e r t h i s s e t u p mode t o a d j u s t t h e
t i m i n g . Then t u r n
t h e
c o n t r o l knob t o d e c r e a s e t h e
d i a m e t e r of t h e i n n e r r i n g of
t h e
b r i g h t s u n s p o t u n t i l
d i a m e t e r becomes n i l and c o i n c i d e s
w i t h
t h e s u n s p o t
c e n t e r .
' p r e s s t h e OPERATE key t o r e t u r n t o t h e r a d a r s c r e e n .
S e l e c t t h e " ( 6 ) HEAD DIRECTION ADJUSTMENT" by
Press
t h e
b r i l l i a n c e k e y t o r e t u r n t o t h e menu,
AUTO TUNE
t o t h e maximum v i s i b i l i t y of t h e t a r g e t e c h o e s .
A t
more
t h a n 6 range, f i n d s e v e r a l weak b u t s t e a d y
e c h o e s .
t h a n 3 seconds.
t h e
r a n g e and p r e s s
t h e
b r i l l i a n c e key t o
e n t e r t o t h e u n d e r l i n e d menu.
S e l e c t t h e mode of
CALIBRATION"
by t h e range
key, and t u r n t h e c o n t r o l knob t o g e t t h e maximum
p i c t u r e v i s i b i l i t y . I n t h i s c o n d i t i o n ,
t h e
t u n i n g s y s t e m
i s i n manual mode.
Then s e l e c t t h e mode
AUTO"
t o c a r r y o u t a u t o
t u n e system c a l i b r a t i o n . The c a l i b r a t i o n w i l l t a k e s e v e r a l
COMPLETED" i s
d i s p l a y e d on t h e s c r e e n . The a u t o - t u n i n g
c a l i b r a t i o n v o l t a g e
i s
d i s p l a y e d a t
"CONTROL"
a r e a .
p r e s s t h e
OPERATE
key t o r e t u r n t o
t h e
r a d a r s c r e e n .
T h i s
adjustment t o a d j u s t
t h e
a u t o - t u n i n g s y s t e m
E n t e r t h e menu by p r e s s i n g t h e b r i l l i a n c e key more
S e l e c t t h e
" ( 4 ) AUTO TUNE CALIBRATION"
by p r e s s i n g
When t h e c a l i b r a t i o n i s f i n i s h e d , t h e "CALIBRATION
t h e b r i l l i a n c e key t o r e t u r n t h e o r
5 - 7