Anritsu RA77OUA, Instruction Manual

Page: 16 / 52

10
11
12
13
14
S e l e c t t h e key p o s i t i o n by t h e r a n g e key, and
s e t t h e f u n c t i o n number t o t h e key by t h e c o n t r o l knob.
Replace t h e
KEY-CAP
w i t h t h e new f u n c t i o n ' s one.
( 4 ) AUTO TUNE CALIBRATION
1 2 NM.
T h i s mode i s u s e d 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 f o r 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 .
S e t t h e mode t o "2
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 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 system i s i n
manual mode.
,
Then s e t t h e mode "1
AUTO",
and t u n e s y s t e m
c a l i b r a t i o n
w i l l b e carried
o u t . 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
m i n u t e s .
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
COMPLETED"
i s d i s p l a y e d on t h e screen. The a u t o - t u n i 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 .
( 5 )
T I M I N G
ADJUSTMENT
t o t a r g e t .
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 .
T h e n 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 t h e 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 .
HEAD
DIRECTION ADJUSTMENT
T h i s mode e l i m i n a t e s t h e a n g u l a r d i f f e r e n c e between
t h e h e a d i n g d i r e c t i o n of t h e s c a n n e r i n s t a l l e d on t h e s h i p
and t h a t of t h e d i s p l a y e d p i c t u r e . When t h e c o n t r o l knob
i s t u r n e d c l o c k w i s e , t h e h e a d i n g marker on t h e p i c t u r e
moves
clockwise
( t h e p i c t u r e
on
t h e
screen t u r n s
c o u n t e r c l o c k w i s e ) ; t u r n i n g t h e c o n t r o l knob c o u n t e r -
c l o c k w i s e makes t h e h e a d i n g marker move
p i c t u r e on t h e s c r e e n
t u r n s
Each movement
i s i n 0 . 1 d e g r e e s t e p s .
B e f o r e e n t e r t h e S e t u p mode, s e t t h e range s c a l e t o
T h i s mode
i s
used t o a d j u s t t h e t i m i n g for d i s t a n c e
S e t t h e d e t e c t i o n r a n g e t o 0 . 1 2 5
or
0 . 2 5
NM,
o p e r a t e
2
-
1 1