National Instruments NI 9219 - page 23

© National Instruments Corp. 23 NI 9219 Operating Instructions
Input impedance
Voltage and Digital In modes
(±60 V, ±15 V, ±4 V).....................1 MΩ
Current mode.............................. <40 Ω
All other modes.......................... >1 GΩ
Accuracy
Mode, Range
Gain Error
(% of
Reading)
Offset Error
(ppm of
Range)
Typ (25 °C, ±5°C),
Max (–40 to 70 °C)
Voltage, ±60 V ±0.3, ±0.4 ±20, ±50
Voltage, ±15 V ±0.3, ±0.4 ±60, ±180
Voltage, ±4 V ±0.3, ±0.4 ±240, ±720
Voltage, ±1 V ±0.1, ±0.18 ±15, ±45
Voltage/Thermocouple, ±125 mV ±0.1, ±0.18 ±120, ±360
Current, ±25 mA ±0.1, ±0.6 ±30, ±100
4-Wire and 2-Wire* Resistance, 10 kΩ±0.1, ±0.5 ±120, ±320
4-Wire and 2-Wire* Resistance, 1 kΩ±0.1, ±0.5 ±1200, ±3200