HP 3457A Service Manual page 15

General Inform
B
t' ]on
3457A
Table
1-1.
Specifications
RESISTANCE ( C o n t 'd)
MEASUREMENT ACCURACY
-
FOUR-WIRE OHMS:
f ( %
o f r e a d i n g + Number o f Counts)
A u t o - z e r o ON.
24 HOUR: Tcat
f
1 ° c
A f t e r two hour warm-up. Accuracy 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 .
100
PLC*
6 1 / 2
d i g i t s
215
2 4
5
5
6
12
8 0
RANGE
(OHMS)
9 0
DAY: T c a l
f 5 ' ~
A f t e r one h o u r warm-up.
%
READINC
10 PLC*
6 1 / 2 d i g i t s
235
25
6
6
7
14
83
1
YEAR: T c a l
f 5 ' ~
A f t e r one h o u r warm-up.
1
PLC*
6 1 / 2
d i g i t s
350
35
6
6
8
16
93
RANGE
(OHMS)
3 0
300
3 K
3 0 K
300 K
3 M
3 0 M
RANGE
I
% READING
1
(OHMS)
3 0
3 0 0
3 K
3 0 K
300 K
3 M
3 0 M
% READING
0.0065
0.0045
0.0035
0.0035
0.004
0.0055
0.025
NUMBER OF COUNTS
100 PLC*
6 1 / 2 d i g i t s
315
3 4
6
6
7
12
8 0
I
0.0075
0.0055
0.005
0.005
0.005
0.0065
0.04
10
PLC*
6 1 / 2 d i g i t s
335
3 5
7
7
8
14
8 3
100 PLC*
6 1 / 2 d i g i t s
315
3 4
6
6
7
12
8 0
.I
PLC*
5 1 / 2 d i g i t s
55
6
4
4
4
7
14
.005 PCC*
4 1 / 2
d i g i t s
1 7
4
4
4
4
5
6
NUMBER O F COUNTS
.0005
PLC*
3 1 / 2 d i g i t s
1
PLC*
6 1 / 2 d i g i t s
450
4 5
7
7
9
16
93
NUMBER
.I
PLC*
5 1 / 2
d i g i t s
6 5
8
4
4
4
7
14
10 PLC*
6 1 / 2
d i g i t s
.005 PLC*
4 1 / 2
d i g i t s
18
4
4
4
4
5
6
1
PLC*
6 1 / 2 d i g i t s
.0005 PLC*
3 1 / 2 d i g i t s
.0005 PLC*
3 1 / 2 d i g i t s
6
4
4
4
4
5
5
F COUNTS
.I
PLC*
5 1 / 2
d i g i t s
6
5
8
4
4
4
7
14
.005
PLC*
4 1 / 2 d i g i t s
18
4
4
4
4
5
6