Agilent Technologies E3633A Operating Manual page 148

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Chapter 7 Tutorial
Overview of Agilent E3633A and Agilent E3634A Operation
I n t e r m s o f p e r f o r m a n c e , a l i n e a r r e g u l a t e d s u p p l y h a s a v e r y p r e c i s e r e g u l a t i n g
p r o p e r t i e s a n d r e s p o n d s q u i c k l y t o v a r i a t i o n s o f t h e l i n e a n d l o a d . H e n c e , i t s
l i n e a n d l o a d r e g u l a t i o n a n d t r a n s i e n t r e c o v e r y t i m e a r e s u p e r i o r t o s u p p l i e s
u s i n g o t h e r r e g u l a t i o n t e c h n i q u e s . T h e p o w e r s u p p l y a l s o e x h i b i t s l o w r i p p l e
a n d n o i s e , i s t o l e r a n t o f a m b i e n t t e m p e r a t u r e c h a n g e s , a n d w i t h i t s c i r c u i t
s i m p l i c i t y , h a s a h i g h r e l i a b i l i t y .
T h e A g i l e n t E 3 6 3 3 A a n d A g i l e n t E 3 6 3 4 A c o n t a i n a l i n e a r r e g u l a t e d p o w e r
s u p p l y . I t i s c o n t r o l l e d b y a c o n t r o l c i r c u i t t h a t p r o v i d e s v o l t a g e s t o p r o g r a m
t h e o u t p u t s . T h e p o w e r s u p p l y s e n d s b a c k t o t h e c o n t r o l c i r c u i t s a v o l t a g e
r e p r e s e n t i n g t h e o u t p u t a t t h e t e r m i n a l s . T h e c o n t r o l c i r c u i t s r e c e i v e
i n f o r m a t i o n f r o m t h e f r o n t p a n e l a n d s e n d i n f o r m a t i o n t o t h e d i s p l a y . S i m i l a r l y
t h e c o n t r o l c i r c u i t s ' ' t a l k ' ' t o t h e r e m o t e i n t e r f a c e f o r i n p u t a n d o u t p u t w i t h t h e
G P I B a n d R S - 2 3 2 i n t e r f a c e s . T h e r e m o t e i n t e r f a c e i s a t e a r t h g r o u n d a n d
o p t i c a l l y i s o l a t e d f r o m t h e c o n t r o l c i r c u i t a n d t h e p o w e r s u p p l y .
GPIB
RS-232
Figure 7-2. Block Diagram of the Power Supply Showing the Optical Isolation
136
OPTICAL
ISOLATION
POWER
CONTROL
SUPPLY
DISPLAY
OUTPUT
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