HP 3457A Service Manual page 26

3457A General Information
Table 1-1. Specifications
TRUE RMS AC CURRENT ( C o n t y d )
24 HOUR: T c a l k 1
O C
(ACDCI F u n c t i o n ) A f t e r 2 h o u r warm-up 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
1 A r a n g e . (1 amp maximum i n p u t )
FREQUENCY
I
PERCENT
I
NUMBER OF COUNTS
1
O F
1
I =
I
PLC
1
0.1 PLC
READING
6 1/2
d i g i t s
5 1/2
d i g i t s
.005 PLC
4 1/2 d i g i t s
165
I65
165
375
.0005
PLC
3 1/2 d i g i t s
20
2 0
2 0
4 2
.0005
PLC
3 1/2 d i g i t s
90 DAY: T c a l
f
5 ' ~ (ACDCI F u n c t i o n ) A f t e r 1 h o u r warm-up
30 m A a n d 300 m A r a n g e s .
FREQUENCY
*
PERCENT
0 F
READ I N G
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
.005 PLC
4 1/2 d i g i t s
20
20
20
42
2 2
.0005 PLC
3 1/2
d i g i t s
90 DAY: T c a l f 1 ° c (ACDCI F u n c t i o n ) A f t e r 1 h o u r warm-up
1 A
r a n g e .
(1
amp maximum i n p u t )
*
PERCENT
O F
READ l N G
1.65
0.5
0.4
0.75
NUMBER OF COUNTS
FREQUENCY
0.1
PLC
5 1/2 d i g i t s
1600
1600
1600
3750
> = 1
PLC
6 1/2 d i g i t s
16000
16000
16000
16000
.005
PLC
4 1/2 d i g i t s
165
165
165
375
*
S p e c i f i c a t i o n s a p p l y w i t h i n one week o f AC a u t o - c a l (ACAL
2 )
f o r s t a b l e t e m p e r a t u r e
c o n d i t i o n s . I f AC a u t o - c a l i s n o t used, add 0.6 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 ,
a d d 6000 t o t h e 6 1/2 d i g i t c o u n t s , a d d 600 t o t h e 5 1/2 d i g i t c o u n t s , a d d 60 t o
t h e
4 1/2
d i g i t c o u n t s a n d
6
t o t h e
3 1/2
d i g i t c o u n t s .
F o r
1
y e a r s p e c i f i c a t i o n s , add -08% t o t h e 90 d a y P e r c e n t o f R e a d i n g f i g u r e s .
**
U s i n g AC f a s t f i l t e r (ACBAND
400)
f o r f r e q u e n c i e s a b o v e
400Hz.