O P E R A T I N G I N S T R U C T I O N - Kenwood AG-203 Instruction Manual

Cr oscillator
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Operating Instructions
1 . S t a r t - u p
F i r s t c h e c k t h a t t h e f u s e ( 1 2 ) a n d t h e p o w e r v o l t a g e
s e l e c t o r ( 1 4 ) a r e in t h e n o r m a l p o s i t i o n s , t h e n c o n n e c t
t h e s u p p l i e d A C p o w e r c o r d t o y o u r A C o u t l e t .
t h e p o w e r s w i t c h ( 2 ) a n d t h e p i l o t l a m p ( 1 ) w i l l l i g h t
i n d i c a t i n g t h a t t h e u n i t is r e a d y f o r o p e r a t i o n .
2 o r 3 m i n u t e s f o r t h e u n i t t o w a r m u p s o t h a t it is
s t a b i l i z e d .
2. Waveform S e l e c t i o n
Press t h e W A V E F O R M s w i t c h ( 5 ) t o t h e " V
t i o n t o o b t a i n s i n e w a v e s . Press t h e s w i t c h t o t h e " X L "
p o s i t i o n f o r s q u a r e w a v e s .
3 . F r e q u e n c y S e l e c t i o n
F i r s t set t h e F R E Q . R A N G E s w i t c h ( 6 ) t o t h e d e s i r e d
r a n g e , t h e n set t h e f r e q u e n c y d i a l ( 8 ) s o t h a t t h e d i a l
p o i n t e r ( 1 0 ) i n d i c a t e s y o u r f r e q u e n c y .
E x a m p l e :
S u p p o s e y o u w a n t t o s e l e c t a f r e q u e n c y
o f 1 . 5 k H z , t h e n p r o c e e d as f o l l o w s :
1 . S e t F R E Q R A N G E s w i t c h ( 6 ) t o x 1 0 0 .
2 . B y u s i n g t h e f r e q u e n c y d i a l , s e t t h e
d i a l p o i n t e r ( 1 0 ) r o " 1 5 " o n t h e d i a l
s c a l e .
T h e f r e q u e n c y t h u s s e l e c t e d i s :
1 5 x 1 0 0 = 1 5 0 0 ( H z ) = 1 . 5 ( k H z )
4 . A d j u s t m e n t of O u t p u t V o l t a g e
T h e o u t p u t v o l t a g e f r o m O U T P U T t e r m i n a l ( 4 ) , be
1 0
it s i n e w a v e o r s q u a r e w a v e , c a n be c o n t i n u o u s l y v a r i e d
b y A M P L I T U D E ( 7 ) a n d s t e p p e d d o w n b y A T T E N U A -
T O R ( 3 ) .
Press
E x a m p l e :
A l l o w
p o s i -
5 . U s e of S y n c h r o n i z i n g I n p u t T e r m i n a l
B y a p p l y i n g a n e x t e r n a l s i n e w a v e s i g n a l t o S Y N C ter-
m i n a l ( 1 1 ) , t h e o s c i l l a t i n g f r e q u e n c y o f A G - 2 0 3 c a n be
s y n c h r o n i z e d t o t h e e x t e r n a l s i g n a l . T h e s y n c h r o n i z i n g
range is i n c r e a s e d in p r o p o r t i o n as t h e i n p u t v o l t a g e is
i n c r e a s e d as s h o w n in F i g . 3 , i n d i c a t i n g t h a t t h e s y n c h r o -
n i z i n g range is a b o u t ± 1 % per i n p u t v o l t a g e o f 1 V .
E x a m p l e :
T o a d j u s t o u t p u t v o l t a g e t o 1 0 m V r m s ,
p r o c e e d a s f o l l o w s :
1 . C o n n e c t a v o l t m e t e r c a p a b l e o f meas-
u r i n g
A C
1 V
r m s
t e r m i n a l ( 4 ) .
2 . S e t A T T E N U A T O R
( 3 ) t o O d B a n d
t h e n a d j u s t A M P L I T U D E ( 7 ) u n t i l t h e
v o l t m e t e r i n d i c a t e s 1 V r m s . A v o l t a g e
o f
1 V
r m s w i l l
a p p e a r a t
t e r m i n a l ( 4 ) .
3 . S e t A T T E N U A T O R
( 3 ) t o
T h e
v o l t m e t e r
i n d i c a t e s
w h i l e a v o l t a g e o f 1 0 m V r m s a p p e a r s
at O U T P U T t e r m i n a l ( 4 ) .
S u p p o s e t h a t t h e i n p u t s i g n a l v o l t a g e is
1 V r m s a n d t h e o s c i l l a t i n g f r e q u e n c y o f
A G - 2 0 3 is b e t w e e n 9 9 0 H z a n d 1 0 1 0 H z
t o
O U T P U T
O U T P U T
- 4 0 d B .
a b o u t
0 V ,

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