Specifications and Characteristics 6
U3402A User’s and Service Guide 99
Resistance
[1]
In order to eliminate the noise interference, which might be induced to the test leads, it is recommended to use a shielded
test cable for measuring resistance above 100 K
W
.
[2]
Use Rel operation.
Ta b l e 6- 7 Resistance resolution, full scale reading, and accuracy [± (% of reading + count)]
Rate Range
[1]
Resolution Maximum
reading
Current source Accuracy (One year; 23ºC ± 5ºC)
2-wire 4-wire
Slow
120.000
W
1.20000 k
W
12.0000 k
W
120.000 k
W
1.20000 M
W
12.0000 M
W
120.000 M
W
1 m
W
10 m
W
100 m
W
1
W
10
W
100
W
1 k
W
119.999
1.19999
11.9999
119.999
1.19999
11.9999
119.999
0.5 mA
0.5 mA
100 µA
10 µA
1 µA
100 nA
10 nA
0.1% + 8
[2]
0.08% + 5
[2]
0.06% + 5
[2]
0.06% + 5
0.06% + 5
0.3% + 5
3.0% + 8
0.05% + 8
[2]
0.05% + 5
[2]
0.05% + 5
0.05% + 5
0.05% + 5
0.3% + 5
3.0% + 8
Medium
400.00
W
4.0000 k
W
40.000 k
W
400.00 k
W
4.0000 M
W
40.000 M
W
300.00 M
W
10 m
W
100 m
W
1
W
10
W
100
W
1 k
W
10 k
W
399.99
3.9999
39.999
399.99
3.9999
39.999
299.99
0.5 mA
100 µA
50 µA
5 µA
500 nA
50 nA
10 nA
0.1% + 5
[2]
0.08% + 3
[2]
0.06% + 3
0.06% + 3
0.15% + 3
1.5% + 3
5.0% + 5
0.05% + 5
[2]
0.05% + 3
0.05% + 3
0.05% + 3
0.15% + 3
1.5% + 3
5.0% + 5
Fast
400.0
W
4.000 k
W
40.00 k
W
400.0 k
W
4.000 M
W
40.00 M
W
300.0 M
W
100 m
W
1
W
10
W
100
W
1 k
W
10 k
W
100 k
W
399.9
3.999
39.99
399.9
3.999
39.99
299.9
0.5 mA
100 µA
50 µA
5 µA
500 nA
50 nA
10 nA
0.1% + 2
[2]
0.08% + 2
0.06% + 2
0.06% + 2
0.15% + 2
1.5% + 2
5.0% + 2
0.05% + 2
0.05% + 2
0.05% + 2
0.05% + 2
0.15% + 2
1.5% + 2
5.0% + 2
U3402-90001.book Page 99 Friday, July 24, 2009 4:04 PM
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