Waveform D A T A R E L A T I V E Measurements - Kenwood DCS-8200 Instruction Manual

Programmable digital storage oscilloscope
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E q u i v a l e n t s a m p l i n g
5
Waveform d a t a r e l a t i v e m e a s u r e m e n t s
1)
Use o f r e f e r e n c e
When w a v e f o r m c o m p a r i s o n s a r e made i n t h e o b s e r v a n c e o f s i g n a l s
same t y p e ,
a c c u r a t e w a v e f o r m c o m p a r i s o n s
p r o c e d u r e .
E x a m p l e : R i s e t i m e c h a r a c t e r i s t i c s o f a r e g u l a t e d power s u p p l y
f r o m a n AC v o l t a g e
As b a s i c c h a r a c t e r i s t i c s ,
i n p l a c e o f t h e AC v o l t a g e s o u r c e a r e u s e d .
®
S e l e c t t h e s t o r a g e mode, and s e t t h e s i n g l e - s w e e p
©
Make C H I t h e i n p u t when t h e DC v o l t a g e s o u r c e
t h e T R I G SOURCE, and t h e DC v o l t a g e s o u r c e
s e t t h e T R I G DLY a s needed.
©
A f t e r s t o r i n g
t h e SAVE s w i t c h .
memory, t r a n s m i t t e d and s t o r e d .
®
N e x t , u s e t h e a c t u a l AC power s o u r c e a s t h e i n p u t , and s t o r e t h e i n p u t and o u t p u t i n t h e same manner.
©
S i n c e t h e r e f e r e n c e d a t a
n e c e s s a r y a r e o b t a i n e d .
©
Compare t h e r e f e r e n c e d a t a w i t h t h e d a t a s t o r e d l a t e r ,
62
OFF
d a t a
i n p u t a r e t o be m e a s u r e d .
t h e o u t p u t c h a r a c t e r i s t i c s when a s e p a r a t e DC v o l t a g e s o u r c e
t h e d a t a , p r e s s t h e R E F D I S P s w i t c h t o t u r n on t h e r e f e r e n c e memory, and t h e n
T h e a q u i s i t i o n memory c o n t e n t s w i l l now be c o p i e d a s t h a t a r e i n t h e r e f e r e n c e
i s n o t u p d a t e d , r e p e a t
E q u i v a l e n t s a m p l i n g
F i g . 17
o f t h e same s i g n a l s o u r c e
c a n be made by u s i n g
r e f e r e n c e d a t a w i t h
c i r c u i t
mode.
i s a p p l i e d , and a p p l y
i n p u t p o i n t a s t h e t r i g g e r , s t o r e t h e d a t a .
s t e p 4 ) t o s t o r e d a t a u n t i l
and s t u d y i t .
ON
o r o f t h e
t h e f o l l o w i n g
t h a t o b t a i n s a DC o u t p u t v o l t a g e
i s u s e d
t h e o u t p u t CH2. U s i n g
A t t h i s
t h e w a v e f o r m s
CHI a s
t i m e ,
p r e s s
t h o u g h t

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