HP 3457A Service Manual page 19

General Information
Table 1-1. Specifications
TRUE RMS AC VOLTAGE
(AC and DC Coupled)
INPUT CHARACTERISTICS:
MAX I MUM
READ 1 NG
3 . 2 5 0 0 0 0 V
RESOLUTION
INPUT IMPEDANCE:
1
megohm *I% s h u n t e d by
c
9 0 pF
(
< 115 pF r e a r i n p u t ) .
MAXIMUM INPUT VOLTAGE: ( n o n - d e s t ~ u c t i v e )
I n p u t T e r m i n a l s :
I '
450V p e a k .
H I o r
L O
t o E a r t h G r o u n d :
k
450V p c a k .
CREST FACTOR: 3 . 5 t o 1 a t f u l l - s c a l e .
MEASUREMENT ACCURACY
-
AC COUPLED: f ( % o f r e a d i n g + number o f c o u n t s )
S p e c i f i c a t i o n s a p p l y f o r s i n e - w a v e i n p u t s
>
1 0 % o f r a n g e w i t h DC c o m p o n e n t
<
1 0 % o f t h e AC
c o m p o n e n t , w i t h A u t o - z e r o ON, AC s l o w f i l t e r O N (ACBAND 2 0 1 , a n d a f t e r 2 h o u r w a r m - u p .
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 0 . 7 % t o t h e p e r c e n t o f r e a d
i n g f i g u r e 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 i 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 .
2 4 HOUR: T c a l
I 0 c
(ACV 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 a n d a r d
3 0 mV t o 3 0 V r a n g e s .
FREQUENCY PERCENT
0 F
READING
> =
I PLC
6 1 / 2 d i g i t s
NUMBER
(
0.1 PLC
5 1 / 2 d i g i t s
COUNTS
. 0 0 5 PLC
4 1 / 2 d i g i t s
- 0 0 0 5 PLC
3 l / 2 d i g i t s