Appendix A Specifications
NI 4050 User Manual A-4 www.ni.com
AC Current
Accuracy (% of reading ± mA)
AC current measurements require the use of the CSM current shunt
module.
Input Characteristics
200 mA shunt
Input protection............................... Fuse F1 500 mA/250 V fast
fusing
Shunt resistor...................................1 Ω
Burden voltage.................................< 400 mV at 200 mA
10 A shunt
Input protection...............................Fuse F1 12.5 A/250 V fast fusing
Shunt resistor...................................10 mΩ
Burden voltage.................................< 300 mV at 10 A
Range 24 Hour
(25 °C ± 1 °C) 90 Day
(25 °C ± 10 °C) 1 Year
(25 °C ± 10 °C) Temperature Coefficient
(% of Reading/°C ± mA/°C)
200.000 mA*0.45% ± 0.22 mA 0.47% ± 1.2 mA 0.47% ± 1.2 mA 0.007% ± 0.110 mA
20.0000 mA*0.35% ± 110 µA 0.37% ± 170 µA 0.37% ± 170 µA 0.019% ± 0.120 mA
10.0000 A** 0.3% ± 22 mA 0.32% ± 120 mA 0.32% ± 120 mA 0.026% ± 11 mA
Accuracy numbers are for 5 1/2 digits and include the effects of full-scale and zero-scale errors, temperature variation,
linerarity, and noise.
* Requires 200 mA shunt, CSM-200mA.
** Requires 10 A shunt, CSM-10A.