8508A
Service Manual
1-10
DC Current
DC Current
[1] [2] [3]
Uncertainty Relative to Cal Stds Absolute
Uncertainties
± (ppm R ppm Range)
[4]
Range
Full Scale
[15]
24 hour
TCal ±1 °C
90 day
TCal ±1 °C
365 day
TCal ±1 °C
365 day
TCal ±1 °C
365 day
TCal ±5 °C
95 % Confidence Level
200 μA
199.990 00
5.5 + 2.0
6.0 + 2.0
6.5 + 2.0
12 + 2.0
12 + 2.0
2 mA
1.999 900 0
5.5 + 2.0
6.0 + 2.0
6.5 + 2.0
12 + 2.0
12 + 2.0
20 mA
19.999 000
6.5 + 2.0
7.0 + 2.0
8.0 + 2.0
13 + 2.0
14 + 2.0
200 mA
199.990 00
28 + 4.0
30 + 4.0
33 + 4.0
36 + 4.0
48 + 4.0
2 A
1.999 900 0
80 + 8.0
125 + 8.0
170 + 8.0
170 + 8.0
185 + 8.0
20 A
19.999 000
200 + 20
290 + 20
380 + 20
380 + 20
400 + 20
99 % Confidence Level
200 μA
199.990 00
7.0 + 2.0
7.5 + 2.0
8.0 + 2.0
15 + 2.0
16 + 2.0
2 mA
1.999 900 0
7.0 + 2.0
7.5 + 2.0
8.0 + 2.0
15 + 2.0
16 + 2.0
20 mA
19.999 000
8.0 + 2.0
9.0 + 2.0
10 + 2.0
16 + 2.0
18 + 2.0
200 mA
199.990 00
35 + 4.0
37 + 4.0
40 + 4.0
45 + 4.0
60 + 4.0
2 A
1.999 900 0
100 + 8.0
150 + 8.0
205 + 8.0
210 + 8.0
225 + 8.0
20 A
19.999 000
250 + 20
350 + 20
450 + 20
455 + 20
500 + 20
DC Current (Secondary Specifications)
[1] [2] [3]
Temperature Coefficient
Input Impedance (
Ω
)
15 °C - 30 °C
5 °C - 15 °C
30 °C - 40 °C
Range
Front Rear
± ppm Reading/°C
200
μ
A
150
150
0.4
0.6
2 mA
15.2
15.2
0.4
0.6
20 mA
1.8
1.9
1.2
1.8
200 mA
1.2
1.3
6. 0
9.0
2 A
0.3
0.4
8.0
12
20 A
0.04
-
15
20
Type
........................................................................ Multi-slope, multi-cycle A-D Converter
Protection
Front Input............................................................... 20 A rms
Rear Input ............................................................... 2 A rms, Rear Panel Fuse
Settling Time
200
μ
A to 200 mA Ranges, to 10 ppm step size .... Filter Out < 50 ms, Filter In < 1 s
2 A Range
to 100 ppm step size........................................... < 1 s
to 75 ppm step size............................................. < 30 s
to 30 ppm step size............................................. < 5 minutes
20 A Range (at 10 A)
to 300 ppm step size........................................... < 1 s
to 250 ppm step size........................................... < 30 s
to 100 ppm step size........................................... < 5 minutes
Содержание 8508A
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