Kenwood CO-1303D Instruction Manual page 12

T i m e - b a s e a n d signal f r e q u e n c i e s are e q u a l .

P o s i t i o n t h e w a v e f o r m b y a d j u s t i n g t h e v e r t i c a l p o s i t i o n c o n t r o l ( 9 ) a n d h o r i z o n t a l p o s i t i o n c o n t r o l ( 1 0 )

a p p r o p r i a t e l y .

If t h e w a v e f o r m i n c l u d e s a D C c o m p o n e n t , it is s h i f t e d u p o r d o w n d e p e n d i n g o n t h e p o l a r i t y o f t h e

c o m p o n e n t .

In t h i s c a s e , c o r r e c t t h e p o s i t i o n o f t h e w a v e f o r m b y m e a n s o f t h e v e r t i c a l p o s i t i o n

( 9 ) .

If t h e w a v e f o r m c a n n o t b e b r o u g h t w i t h i n t h e s c r e e n o f t h e c a t h o d e r a y t u b e , it m e a n s a large D C

c o m p o n e n t is i n c l u d e d in t h e s i g n a l u n d e r o b s e r v a t i o n .

c o n t r o l ( 8 ) c o u n t e r c l o c k w i s e u n t i l t h e w a v e f o r m is b r o u g h t b a c k t o a n a p p r o p r i a t e

A m p l i t u d e

A n y v o l t a g e

m e a s u r e m e n t s m a d e o n a n o s c i l l o s c o p e a r e m a d e in p-p

e f f e c t i v e , o r r m s v a l u e is o f t e n t h e o n e o f i n t e r e s t , t h e f o l l o w i n g t a b l e gives t h e c o n v e r s i o n b e t w e e n p-p

a n d r m s v a l u e s f o r a n u m b e r o f c o m m o n w a v e f o r m s .

Fig. 1 Relationship between signal and time base frequencies

A m p l i t u d e

(Positive square w a v e )

With A C - D C selector s w i t c h

set at position D C .

Fig. 2 Measurement of A C and DC components

OPERATING INSTRUCTIONS

T i m e - b a s e f r e q u e n c y is 1 / 5 of signal f r e q u e n c y .

In s u c h a c a s e , t u r n t h e V . A T T ( 7 ) o r V . G A I N

With A C - D C s e l e c t o r s w i t c h

set at position A C .