Plc = I N T E G R A T I O N Time I N Power L I N E C Y C L E S . When U S I N G I N T E G R A T I O N T I M E S O F O R Iplc; M U L T I P L Y Number O F Counts I N T H E Measurement A C C U R A C Y T A B L E S B Y; R E A D I N G S , 0.01 F O R; Temperature Coefficient; 1/2 D I G I T S D I S P L A Y E D - HP 3457A Service Manual

Table 1-1.
Specifications
DC CURRENT (Cont9d)
9 0
DAY: T c a l
+
5 ' ~
A f t e r one hour warm-up.
RANGE
1 YEAR: T c a l f 5 ' ~ A f t e r one hour warm-up.
% READING
100
PLC*
6 1 / 2 d i g i t s
104
104
104
204
604
10 PLC*
6 1 / 2 d i g i t s
104
104
104
204
604
NUMBER O F COUNTS
1 PLC*
6 1 / 2
d i g i t s
115
115
115
215
615
RANGE
.0005
PLC*
3 1 / 2 d i g i t s
% READING
NUMBER O F COUNTS
. I
PLC*
5 1 / 2
d i g i t s
14
14
14
2 4
64
1 0 0 PLC*
6 1 / 2 d i g i t s
104
104
104
204
604
*
PLC
=
I n t e g r a t i o n Time i n Power L i n e C y c l e s . When u s i n g i n t e g r a t i o n t i m e s o f 1 0 0 PLC, 1 0 PLC,
o r IPLC; m u l t i p l y Number o f Counts i n t h e Measurement Accuracy T a b l e s b y 0 . 1 f o r
5 1 / 2
d i g i t
r e a d i n g s , 0.01 f o r 4 1 / 2 d i g i t r e a d i n g s and 0.001 f o r
3 1 / 2
d i g i t r e a d i n g s .
T c a l
=
t h e t e m p e r a t u r e o f t h e environment where t h e
3 4 5 7 A
was c a l i b r a t e d . C a l i b r a t i o n s h o u l d
be p e r f o r m e d w i t h t h e environment t e m p e r a t u r e between
1 8
and
2 8
degrees c e n t i g r a d e .
.005 PLC*
4 1 / 2
d i g i t s
5
5
5
6
1 0
.005 PLC*
4 1 / 2
d i g i t s
TEMPERATURE COEFFICIENT: * ( % o f Reading
+
Number o f ~ o u n t s ) / ' ~
6 1 / 2 D i g i t s D i s p l a y e d
10 PLC*
6 1 / 2
d i g i t s
104
104
104
204
604
.0005 PLC*
3 1 / 2 d i g i t s
A u t o - Z e r o OFF*
*
S p e c i f i c a t i o n s g i v e n a r e f o r a s t a b l e environment
( *
I ' c )
and o v e r a t e n m i n u t e p e r i o d .
M u l t i p l y Number o f Counts b y 0 . 1 f o r 5 1 / 2 d i g i t r e a d i n g s , 0 . 0 1 f o r 4 1 / 2 d i g i t
r e a d i n g s and 0 . 0 0 1 f o r 3 1 / 2 d i g i t r e a d i n g s .
1
PLC*
6 1 / 2 d i g i t s
115
115
115
215
615
. I
PLC*
5 1 / 2 d i g i t s
14
14
14
2 4
64