D I S A B L I N G T H E O U T P U; D I S C O N N E C T I N G T H E O U T P U T U S I N G A N E X T E R N A L R E L A - Agilent Technologies E3646A/47A User Manual

E364xa series. dual output dc power supplies
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Chapter 3 Front-Panel Operation and Features
Disabling the Output
Disabling the Output
T h e o u t p u t o f t h e p o w e r s u p p l y c a n b e d i s a b l e d o r e n a b l e d f r o m t h e f r o n t p a n e l .
• W h e n t h e p o w e r s u p p l y i s i n t h e " O f f " s t a t e , t h e
a n d t h e o u t p u t i s d i s a b l e d . T h e
s u p p l y r e t u r n s t o t h e " O n " s t a t e . W h e n t h e o u t p u t i s d i s a b l e d , t h e v o l t a g e
v a l u e i s 0 v o l t s a n d t h e c u r r e n t v a l u e i s 0 . 0 2 a m p s . T h i s g i v e s a z e r o o u t p u t
v o l t a g e w i t h o u t a c t u a l l y d i s c o n n e c t i n g t h e o u t p u t .
• T h e o u t p u t s t a t e i s s t o r e d i n
w h e n p o w e r h a s b e e n o f f o r a f t e r a r e m o t e i n t e r f a c e r e s e t .
• W h i l e t h e o u t p u t i s d i s a b l e d , t h e c o n t r o l
u n w a n t e d c h a n g e s o c c u r r i n g . B u t t h e o t h e r f r o n t p a n e l k e y s a r e w o r k i n g .
• T o l o c k t h e c o n t r o l k n o b , m o v e t h e f l a s h i n g d i g i t t o t h e r i g h t o r l e f t u s i n g
T o s e e o r c h e c k t h e c h a n g e s w h i l e t h e o u t p u t i s d i s a b l e d , p r e s s
r e t u r n i n g t o m e t e r m o d e .
• F r o n t - p a n e l o p e r a t i o n :
• R e m o t e i n t e r f a c e o p e r a t i o n :
Disconnecting the Output Using an External Relay
T o d i s c o n n e c t t h e o u t p u t , a n e x t e r n a l r e l a y m u s t b e c o n n e c t e d b e t w e e n t h e
o u t p u t a n d t h e l o a d . A T T L s i g n a l o f e i t h e r l o w t r u e o r h i g h t r u e i s p r o v i d e d t o
c o n t r o l a n e x t e r n a l r e l a y . T h i s s i g n a l c a n o n l y b e c o n t r o l l e d w i t h t h e r e m o t e
c o m m a n d
2 3 2 c o n n e c t i o n p i n 1 a n d p i n 0 .
W h e n t h e
( 4 . 5 V ) a n d p i n 9 i s l o w ( 0 . 5 V ) . T h e l e v e l s a r e r e v e r s e d w h e n t h e
OUTPut:RELay
c o n n e c t o r i s a v a i l a b l e o n l y a f t e r i n s t a l l i n g t w o j u m p e r s ( J P 1 a n d J P 2 ) i n s i d e
t h e p o w e r s u p p l y . S e e t h e
N o t e
Do not use the RS-232 interface if you have configured the power supply to output
relay control signals. Internal components on the RS-232 circuitry may be damaged.
56
<
>
o r
r e s o l u t i o n s e l e c t i o n k e y s u n t i l t h e f l a s h i n g d i g i t d i s a p p e a r s .
Output
output Off
On/Off
OUTP {OFF|ON}
OUTPut:RELay {OFF|ON}
OUTPut:RELay
s t a t e i s " O N " , t h e T T L o u t p u t o f p i n 1 i s h i g h
s t a t e i s " O F F " . T h e T T L o u t p u t o f p i n 1 o r p i n 9 o f t h e R S - 2 3 2
S e r v i c e I n f o r m a t i o n
OFF
a n n u n c i a t o r t u r n s o n
OFF
a n n u n c i a t o r t u r n s o f f w h e n t h e p o w e r
v o l a t i l e
m e m o r y ; t h e o u t p u t i s a l w a y s d i s a b l e d
k n o b
i s l o c k e d t o p r e v e n t f r o m a n y
. T h e T T L o u t p u t i s a v a i l a b l e o n t h e R S -
t o l o c a t e t h e m .
Display
b e f o r e
Limit

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E3648a/49a2110-10682110-10702110-04572110-0996

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