Detailed Circuit Description; Analog Section - Philips PM2517E Service Manual

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3 . 3 . D E T A I L E O C I R C U I T D E S C R I P T I O N
3 . 3 . 1 . G e n e r a l ( F i g . 1 1 )
T h e P M 2 5 1 7 i s b u i l t u p o f t h e a n a l o g . A D C a n d d i g i r a l s e c t i o n . A l l i n p u t s i g n a l s a r e c o n v e r t e d I n t o a d . c . v o l t a g e
s i g n a l . T h e d . c . v o l t a g e s i g n a l i s s u p p l i e d t o t h e A D C a n d c o n v e r t e d i n t o a d i g i t a l s i g n a l . l n t h e d i g i t a l s e c t i o n
t h e d i g i t a l s i g n a l t r o m t h e A D C i s u s e d t o c o n t r o l t h e a n a l o g s e c t i o n a n d A D C a n d t o s u p p l y t h e c o u n t r n g
r e s u l t s t o t h e d i s p l a y ( F i g . 1 1 ) .
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In the'detailed circuit description the sections will be described
3.3.2- Analog section
3.3.2.1. Dc voltage measurcments (Fig. 12)
s e p a r a t e l y i n t h e o r d e r a s s h o w n i n f i g u r e
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