HP 3457A Service Manual page 17

General Tnf ormation
Table 1-1. Specifications
RESISTANCE (Contyd)
1 YEAR: T c a l
f
5 ' ~
A f t e r one h o u r warm-up.
100 PLC*
5 1 / 2 d i g i t s 6
RANGE
(OHMS) 10 PLC*
1 / 2 d i g i t s
% READING NUMBER OF COUNTS
1 PLC*
5 1 / 2 d i g i t s
.I PLC*
5 1 / 2 d i g i t s
.005 PLC* .0005 PLC*
3 1 / 2 d i g i t s
*
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 100 PLC, 10 PLC,
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 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 e n v i r o n m e n t where t h e 3457A 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
b e p e r f o r m e d w i t h t h e e n v i r o n m e n t t e m p e r a t u r e between 18 and 28 d e g r e e s c e n t i g r a d e .
TEMPERATURE COEFFICIENT: * ( % o f R e a d i n g
+
Number o f c o u n t s ) /
'C
6 1 / 2 D i g i t s D i s p l a y e d
RANGE A u t o - Z e r o O N 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 e n v i r o n m e n t
( *
I ' c )
and o v e r a t e n m i n u t e p e r i o d .
F o r i n t e g r a t i o n t i m e s o f >= 1 PLC, 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 , 0.01 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 .