
Publication 1746-UM001A-US-P
Specifications A-3
Input Specifications
Description Specification
Type of Input
(Selectable)
NI16V ±10V dc, 1 to 5V dc, 0 to 5V dc, 0 to 10V dc,
NII16I 0 to 20 mA, 4 to 20 mA,
±
20 mA, 0 to 1 mA
Type of Data (Selectable) Engineering Units
Scaled-for-PID
Proportional Counts (-32,768 to +32,767 range)
Proportional Counts (User-Defined Range, Class 3
only)
1746-NI4 Data Format
Input Impedance NI16V 20 M
Ω
NI16I 249
Ω
Maximum Voltage
Input without
Damage
NI16V
±
30V between any two signal terminals
NI16I ±8V between any two signal terminals
Current Input (maximum) ±30 mA (Between analog com and any input terminal)
Time to Detect Open Circuit Less than 5 seconds
Module Update Time See Chapter 4, Channel Filter Frequency Selection,
page 4-6
Input Resolution NI16V 312 µA
NI16I 640 nA
Display Resolution 1 mV or 1 µA
Module Error Over
Full Temperature
Range
(0°C to +60°C, +32°F
to +140°F)
NI16V Voltage input types (±10V dc, 1 to 5V dc, 0 to 5V dc, 0
to 10V dc): 0.1%
NI16I Current input types (0 to 20 mA, 4 to 20 mA, 0 to 1 mA,
±20 mA): 0.3%
Input Offset Drift
with Temperature
NI16V Voltage input type: 90 µV/°C offset drift with
temperature
NI16I Current input type: 360 nA/°C offset drift with
temperature
Gain Drift with
Temperature
NI16V 15 ppm/°C
NI16I 20 ppm/°C
Calibrated Accuracy
at 25°C
NI16V Better than 0.05% of range
NI16I Better than 0.15% of range
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