ESI VideoBridge 2150, Service Manual

Page: 19 / 332

1.1 I NTRODUCT I ON
SECTION
I
DESCRIPTION
E S I ' s Mod e l 2 1 50 a n d M o d e l 2 1 60 A u t o L R C Me t e r s a re two e x t re me l y
v e r s a t i l e i mp e da n ce mea s u r i n g i n s t rumen t s . T he y f e a t u re va r i a bl e t e s t
f re q u e n c i e s up to 1 50kH z , p r og ramma b l e t e s t- s i g n a l l e ve l s , c ompone n t
s o r t i ng , a n d C R T d i sp l ay s . T hey mea s u r e i nd u c t o rs ( L ) , re s i s t o rs ( R ) ,
c a pa c i tors ( C ) , a n d d i sp l ay up to 1 6 i mp e da n c e c h a ra c t e r i s t i c s .
The 2 1 50/2 1 60 L R C m e t e r i s ba s i ca l ly c ompose d of a f re q u e n c y
s e l e c ta b l e s i newa v e g e n e ra tor , a t e s t- l e v e l r e g u l a t o r , p re c i s i on
r a n g e re s i s t or s , a p h a s e - se n s i t i ve v o l t me t e r , a n d a c h a r g e ba l a n c i n g
a n a l og - t o- d i g i ta l c o n ve r t e r . A l l mea su r e me n t s , c a l cu la t i on s , a n d
d i sp l ays a re u n de r t h e c o n t ro l o f t h e 2 1 50 / 2 1 60's Z 80 m i c roproce s s or .
NOT E :
D u e t o t he e x t e n d e d f re q u e n c y capab i l i t i e s o f t h e
2 1 50/2 1 60 , m e a s u r e me n t s a bove 1 0kH z ( 1k H z f o r capa c i t o r s )
a r e s e n s i t i v e t o t h e p o s i t i o n o f t e s t c o n n e c t i o n s . W e
s t rong l y r e c omme n d t h a t y o u f a m i 1 i a r i z e y o u rs e l f w i t h t h e
s e c t i on s i n t h i s m a n ua l c o n c e rn i ng C onne c t i o ns t o t h e
U nknown a n d T e s t L e a d s v s . T e s t F i x t u r e s ( S e c t i on s 2 . 3 . 3 a n d
2 . 3 . 4 ) . W e h o p e t h i s w i l l h e l p y o u i mp r o v e m e a s u r e me n t
re l i a b i l i ty a n d u t i l i z e y o u r V i de oB r i d ge more p r o du c t i ve l y .
A l l f u n c t i on s , p r o c e d u re s , a nd spe c i f i ca t i ons 1 i s t e d i n t h i s manua 1
a s sume a m i n i mu m o f 1 0 m i n u t e s wa rm-up t i m e .
1 - 1
e l s l i 2 1 50/ 2 160 5 / 8 5