HP 3457A Service Manual page 21

General Infol-mation
Table 1-1. Specifications
TRUE RMS AC VOLTAGE (Cont'd)
TEMPERATURE COEFFICIENT
-
AC COUPLED: A t l R a n g e s .
FREQUENCY PERCENT
READING
100KHz- 1MHz 0.08
6
1/2
d i g i t s 3 1/2
d i g i t s
0.15
0.3
NUMBER OF COUNTS
*
F o r AC i n p u t s b e t w e e n
3%
a n d
10%
o f f u l l - s c a l e a n d <
20KHz,
a d d
.04%
t o p e r c e n t r e a d i n g
5 1/2 d i g i t s
MEASUREMENT ACCURACY
-
DC COUPLED: * ( % o f r e a d i n g + number o f c o u n t s )
4 1/2 d i g i t s
A c c u r a c y specified f o r s l n e - w a v e ~ n p u t s
>
10% o f r a n g e w ~ t h DC c o m p o n e n t < 10% o f t h e AC com-
p o n e n t f r o m a s o u r c e i m p e d a n c c o f
<I0
KOhms, w l t h A u t o z e r o ON, AC s l o w f i l t e r ON (ACBAND
2O),
a n d a f t e r
2
h r warm u p . F o r DC c o m p o n e n t
>lo%
o f t h e AC c o m p o n e n t , a l l o w a n a d d ~ t i o n a l 1 . 5 s c c .
s e t t l i n g t l m e f o r c o r r e c t f ~ r s t r e a d i n g , a d d
.14%
t o t h e a p p l i c a b l e p e r c e n t o f r e a d l n g f i g -
u r e s , a d d 23000 t o t h e 6 1/2 d ~ g i t c o u n t s , a d d 2300 t o t h e 5 1/2 d ~ g ~ t c o u n t s , a d d 230 t o t h e
4 1/2 d ~ g ~ t c o u n t s , a d d 23 t o t h e 3 1/2 digit c o u n t s .
F o r p r e - p r o g r a m m e d s e t t l l n g t l m e s , a d d
.I%
o f I n p u t v o l t a g e s t e p t o a c c u r a c y s p e c i f i c a t i o n s
f o r t h e f i r s t r e a d i n g .
24
HOUR: T c a l
k
1
O C
(ACDCV F u n c t ~ o n ) A f t e r
2
h o u r w a r m - u p A c c u r a c y r e l a t l v e t o c a l i b r a t ~ o n s t d
30 mV t o 30 V r a n g e s
FREQUENCY PERCENT
0 F
READING
NUMBER OF COUNTS
.005
PLC
4 1/2 d i g i t s
>=
1
PLC
6 1/2
d i g i t s
.0005
PLC
3 1/2 d i g i t s
0.1
PLC
5 1/2
d i g i t s
24
HOUR: T c a l
k 1
O C
(ACDCV F u n c t i o n ) A f t e r
2
h o u r w a r m - u p A c c u r a c y r e l a t i v e t o c a l i b r a t i o n s t d
3 0 0 V r a n g e
FREQUENCY PERCENT
NUMBER OF COUNTS
> =
1
PLC
6 1/2
d i g i t s
0.1 PLC
5 1/2
d i g i t s
I
I
.005 PLC
4 l/2
d i g i t s
.0005 PLC
3 1/2
d i g i t s