HP 3457A Service Manual page 11

General Information
Table 1-1. Specifications
DC VOLTS (Contyd)
1 YEAR: T c a l
*
5 ' ~ A f t e r 1 h o u r warm-up
RANGE
30 m V
300 m V
3
v
30 V
300
V
10 PLC*
6 1/2 d i g i t s
% READING
0.0045
0.0035
0.0025
0.0040
0.0055
100 PLC*
6 1/2 d i g i t s
365
3 9
6
19
6
NUMBER OF COUNTS
*
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
be 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 b e t w e e n
18 and 28 d e g r e e s c e n t i g r a d e .
1
PLC*
6 1/2 d i g i t s
500
5 0
7
30
7
-005 PLC*
4 1/2 d i g i t s
19
4
4
4
4
TEMPERATURE COEFFICIENT: '(% o f R e a d i n g
+
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
.I
PLC*
5 1/2 d i g i t s
70
9
4
7
4
.0005 PLC*
3 1/2 d i g i t s
6
4
4
4
4
A u t o - Z e r o OFF*
-0005
+
40
.0005
+
13
.0005
+
10.3
.0005
+
11.0
.0005
+
10.3
*
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
( k
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 , 0.01 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 .
NOISE REJECTION:
W i t h 1 Kohm i m b a l a n c e i n t h e LO l e a d and l i n e f r e q u e n c y (50 o r 60 Hz)
*
0.08%.
INTEGRATION TIME
100 PLC
A C N M R
DC C M R 140 d b
10 PLC
/
1 PLC
I
.I
PLC
1
-005 PLC
1
.0005 PLC