Introduction and Specifications
Electrical Specifications 1
1-35
DC Current Secondary Performance Specifications and Operating Characteristics
Temperature
Coefficient
[2]
Noise
Bandwidth
0.1-10 Hz
Bandwidth
10 Hz-10
kHz
Stability
±1 °C
[1]
24 Hours
10 – 40 °C
0 – 10 °C
and
40 – 50 °C
pk-pk RMS
Range
± (ppm output +
nA)
± (ppm output + nA) / °C
Compliance
Limits
Burden
Voltage
Adder
[3]
(±nA/V)
Maximum
Load for Full
Accuracy
[4]
(Ω)
ppm output
+ nA
nA
220 µA
2.2 mA
22 mA
220 mA
2.2 A
5 + 1
5 + 5
5 + 50
8 + 300
9 + 7 µA
1 + 0.40
1 + 2
1 + 20
1 + 200
1 + 2.5 µA
3 + 1
3 + 10
3 + 100
3 + 1 µA
3 + 10 µA
10
10
10
10
3
[5]
0.2
0.2
10
100
2 µA
20k
2k
200
20
2
6 + .9
6 + 5
6 + 50
9 + 300
12 + 1.5 µA
10
10
50
500
20 µA
5725A
± (ppm output
+ µA)
± (ppm output + µA) / °C
ppm output
+ µA
µA
11 A 25 + 100 20 + 75 30 + 120 4 0 4 15 + 70 175
Notes:
Maximum output from the calibrator’s 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.
1. Stability specifications are included in the Absolute Uncertainty values for the primary specifications.
2. Temperature coefficient is an adder to uncertainty specifications. It does not apply unless operating more than ±5 °C from calibration
temperature.
3. Burden voltage adder is an adder to uncertainty specifications that does not apply unless burden voltage is greater than 0.5 V.
4. For higher loads, multiply uncertainty specification by:
accuracy full for load maximum
load actual x 0.1
1+
5. The calibrator’s compliance limit is 2 V for outputs from 1 A to 2.2 A. 5725A Amplifier may be used in range-lock mode down to 0 A.
Minimum Output: ................................................. 0 for all ranges, including 5725A.
Settling Time: ....................................................... 1 second for mA and mA ranges; 3 seconds for 2.2 A range; 6 seconds
for 11 range; + 1 second for range or polarity change
Overshoot: ............................................................ <5 %