HP 3457A Service Manual page 24

General Informntion
Table 1-1. Specifications
TRUE RMS AC CURRENT ( C o n t y d )
MEASUREMENT ACCURACY
-
A C COUPLED:
k(%
o f r e a d i n g + number o f c o u n t s )
A f t e r t w o h o u r warm-up.
S i n e - w a v e i n p u t s > 10% o f r a n g e .
A C s l o w f i l t e r O N (ACBAND
2 0 ) .
A u t o - z e r o ON.
F o r p r e - p r o g r a m m e d s e t t l i n g t i m e s , e r r o r i s
<
0 . 1 %
o f i n p u t c u r r e n t s t e p .
24
HOUR: T c a l
+
1 ' ~
(ACI 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 a n d a r d
3 0 m A and 300 m A r a n g e s .
FREQUENCY PERCENT
0 F
READ 1 N G
> = 1 PLC
6 1 / 2 d i g i t s
2800
4000
NUMBER C
0.1 PLC
5 1 / 2
d i g i t s
2 9 0
290
290
7 5 0
400
COUNTS
.005
PLC
4 1 / 2
d i g i t s
- 0 0 0 5
PLC
3 1 / 2 d i g i t s
2 4
HOUR: T c a l
f 1
O C
(ACI 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 a n d a r d
1 A r a n g e . ( 1 amp maximum i n p u t )
.0005
PLC
3 1 / 2 d i g i t s
NUMBER OF COUNTS
9 0
DAY: T c a l
f 5 ' ~
(ACI F u n c t i o n ) A f t e r
1
h o u r warm-up
> = 1
PLC
6 1 / 2
d i g i t s
2800
2800
2800
2800
FREQUENCY
20Hz-45112
4 6 H z - 1 0 0 H z
101Hz-20KHz
**
400Hz-20KHz
0.1
PLC
5 1 / 2
d i g i t s
3 0 m A a n d 3 0 0 m A r a n g e s .
PERCENT
0 F
READING
0 . 9
0.35
0.30
0 . 3 0
.005 PLC
4 1 / 2
d i g i t s
FREQUENCY
*
PERCENT
O F
READING
NUMBER OF COUNTS
> = 1
PLC
6 1 / 2 d i g i t s
.005
PLC
4 1 / 2
d i g i t s
32
3 2
3 2
8 0
4 2
0.1
PLC
5 1 / 2
d i g i t s
.0005 PLC
3 1 / 2
d i g i t s
7
7
7
12
8