T H E Q U E S T I O N A B L E S T A T U S R E G I S T E - Agilent Technologies E3646A/47A User Manual

E364xa series. dual output dc power supplies
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Chapter 4 Remote Interface Reference
The SCPI Status Registers
The Questionable Status Register
T h e Q u e s t i o n a b l e S t a t u s r e g i s t e r p r o v i d e s i n f o r m a t i o n a b o u t u n e x p e c t e d
o p e r a t i o n o f t h e p o w e r s u p p l y . B i t 4 r e p o r t s a f a u l t w i t h t h e f a n , a n d b i t 1 3
s u m m a r i z e s q u e s t i o n a b l e o u t p u t s f o r a n y o f t h e t w o s u p p l i e s . F o r e x a m p l e ,
i f o n e o f t h e t w o s u p p l i e s i s i n c o n s t a n t v o l t a g e m o d e a n d d u e t o a n o v e r l o a d
l o o s e s r e g u l a t i o n , b i t 1 3 i s s e t ( l a t c h e d ) . T o r e a d t h e r e g i s t e r , s e n d t h e
STATus:QUEStionable?
c o m m a n d
T o m a k e u s e o f b i t 1 3 y o u m u s t f i r s t e n a b l e r e g i s t e r s y o u w i s h t o s u m m a r i z e
w i t h b i t 1 3 . S e n d t h e c o m m a n d
Q u e s t i o n a b l e I n s t r u m e n t r e g i s t e r , t h e n s e n d t h e c o m m a n d
STAT:QUES:INST:ISUM<n>:ENAB 515
Q u e s t i o n a b l e I n s t r u m e n t S u m m a r y r e g i s t e r , w h e r e n i s 1 o r 2 .
Table 4-3. Bit Definitions - Questionable Status Register
Bit
Decimal
Value
0-3
Not Used
4
Overtemperature
5-12 Not Used
13
ISUM
8192
14-15 Not Used
The Questionable Instrument Status Register
T h e Q u e s t i o n a b l e I n s t r u m e n t r e g i s t e r p r o v i d e s i n f o r m a t i o n a b o u t u n e x p e c t e d
o p e r a t i o n s f o r e a c h o f t h e t w o s u p p l i e s . F o r e x a m p l e , i f t h e o u t p u t 1 s u p p l y i s
i n t h e c o n s t a n t v o l t a g e m o d e a n d l o o s e s r e g u l a t i o n , t h e n b i t 1 s e t i n d i c a t i n g a
p o s s i b l e o v e r l o a d i n t h e o u t p u t 1 s u p p l y . T h e o u t p u t 2 s u p p l y i s r e p o r t e d a s
b i t 2 . S e n d t h e c o m m a n d
STAT:QUES:INST:ISUM<n>
Q u e s t i o n a b l e I n s t r u m e n t r e g i s t e r . S e n d t h e c o m m a n d
STAT:QUES:INST:ISUM<n>:ENAB 515
.
STAT:QUES :INST:ENAB 6
f o r e a c h s u p p l y t o e n a b l e t h e
0
Always set to 0.
16
The fan has a fault condition.
0
Always set to 0.
Summary of QUES:INST and QUES:INST:ISUM
registers.
0
Always set to 0.
STAT QUES:INST?
t o r e a d t h e r e g i s t e r . T h e
r e g i s t e r s m u s t b e e n a b l e d t o m a k e u s e o f t h e
t o e n a b l e o u t p u t n .
t o e n a b l e t h e
Definition
101
4

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

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