T O P R O G R A M O V E R C U R R E N T P R O T E C T I O; S E T T I N G T H E O C P L E V E L A N D E N A B L E T H E O C P C I R C U I - Agilent Technologies E3633A Service Manual

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Chapter 2 Quick Start
To Program Overcurrent Protection
To Program Overcurrent Protection
O v e r c u r r e n t p r o t e c t i o n g u a r d s t h e l o a d a g a i n s t o u t p u t c u r r e n t s t h a t r e a c h a
s p e c i f i e d v a l u e g r e a t e r t h a n t h e p r o g r a m m e d p r o t e c t i o n l e v e l . I t i s
a c c o m p l i s h e d b y p r o g r a m m i n g t h e o u t p u t c u r r e n t t o z e r o .
T h e f o l l o w i n g s t e p s s h o w h o w t o s e t t h e o v e r c u r r e n t p r o t e c t i o n t r i p l e v e l , h o w
t o c h e c k O C P o p e r a t i o n a n d h o w t o c l e a r o v e r c u r r e n t c o n d i t i o n .
Setting the OCP Level and Enable the OCP Circuit
Power
1 T u r n o n t h e p o w e r s u p p l y .
T h e p o w e r s u p p l y w i l l g o i n t o t h e
( t h e
8V
* o r
Output
On/Off
2 E n a b l e t h e o u t p u t .
T h e
Over
Current
3 E n t e r t h e O C P m e n u a n d s e t t h e t r i p l e v e l .
LEVEL 22.0 A
LEVEL 7.5 A
Y o u w i l l s e e t h e a b o v e m e s s a g e o n t h e d i s p l a y w h e n y o u e n t e r t h e O C P m e n u .
A d j u s t t h e k n o b f o r t h e d e s i r e d O C P t r i p l e v e l .
Over
Current
4 E n a b l e t h e O C P c i r c u i t .
OCP ON
Y o u w i l l s e e t h e a b o v e m e s s a g e a f t e r p r e s s i n g t h e
*For Agilent E3633A Model
OFF
a n n u n c i a t o r t u r n s o n ) ; t h e 8 V / 2 0 A * o r 2 5 V / 7 A * * r a n g e i s s e l e c t e d ( t h e
25V
* * a n n u n c i a t o r t u r n s o n ) ; a n d t h e k n o b i s s e l e c t e d f o r
OFF
a n n u n c i a t o r t u r n s o f f a n d t h e d i s p l a y w i l l g o t o t h e m e t e r m o d e .
(E3633A)
(E3634A)
**For Agilent E3634A Model
p o w e r - o n / r e s e t
s t a t e ; t h e o u t p u t i s d i s a b l e d
Over
k e y .
Current
2
v o l t a g e
c o n t r o l .
37

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