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Introduction and Specifications
DC Current Specifications
1
1-27
1-31. DC Current Specifications
Table 1-14. 5720A Series II DC Current Specifications: 99 % and 95 % Confidence Levels
5720A
99%
99 % Confidence Level
Range Resolution
Absolute Uncertainty
±5 °C from calibration temperature.
For fields strengths >0.4 V/m but ≤3 V/m,
add 1 % of range.
Relative Uncertainty ±1 °C
24 Hours 90 Days 180 Days 1 Year 24 Hours 90 Days
nA ± (ppm output + nA) ± (ppm output + nA)
220 µA
2.2 mA
22 mA
0.1
1
10
040 + 7
030 + 8
030 + 50
042 + 7
035 + 8
035 + 50
045 + 7
037 + 8
037 + 50
050 + 7
040 + 8
040 + 50
024 + 7
024 + 8
024 + 50
026 + 7
026 + 8
026 + 50
µA ± (ppm output + µA) ± (ppm output + µA)
220 mA
2.2 A
[Note 1]
0.1
1
040 + 0.8
060 + 15
045 + 0.8
070 + 15
047 + 0.8
080 + 15
050 + 0.8
090 + 15
026 + 0.5
040 + 12
030 + 0.5
045 + 12
5725A Amplifier:
11 A 10 330 + 470 340 + 480 350 + 480 360 + 480 100 + 130 110 + 130
5720A
95%
95 % Confidence Level
Range Resolution
Absolute Uncertainty
±5 °C from calibration temperature
For fields strengths >0.4 V/m but ≤3 V/m,
add 1 % of range.
Relative Uncertainty ±1 °C
24 Hours 90 Days 180 Days 1 Year 24 Hours 90 Days
nA ± (ppm output + nA) ± (ppm output + nA)
220 µA
2.2 mA
22 mA
0.1
1
10
032 + 6
025 + 7
025 + 40
035 + 6
030 + 7
030 + 40
037 + 6
033 + 7
033 + 40
040 + 6
035 + 7
035 + 40
020 + 6
020 + 7
020 + 40
022 + 6
022 + 7
022 + 40
µA ± (ppm output + µA) ± (ppm output + µA)
220 mA
2.2 A
[Note 1]
0.1
1
035 + 0.7
050 + 12
040 + 0.7
060 + 12
042 + 0.7
070 + 12
045 + 0.7
080 + 12
020 + 0.7
032 + 12
025 + 0.7
040 + 12
5725A Amplifier:
11 A 10 330 + 470 340 + 480 350 + 480 360 + 480 100 + 130 110 + 130
Note: Maximum output from calibrator terminals is 2.2 A. Uncertainty specifications for 220 mA and 2.2 mA
ranges are increased by a factor of 1.3 when supplied through 5725A terminals.
Specifications are otherwise identical for all output locations.
1. Add to uncertainty specifications:
±200 x
I
2
ppm for >100 mA on 220 mA range
±10 x I
2
ppm for >1 A on 2.2 A range