WSN-3202 Datasheet, PDF (6/11 Pages) National Instruments Corporation – Wireless Sensor Network Programmable Analog Input Measurement Nodes

Wireless Sensor Network Programmable Analog Input Measurement Nodes
NI WSN-3202 Specifications
These specifications are typical for the range -40 to 70 °C unless otherwise
noted. Some specifications (such as sample interval and power consumption)
can be optimized by customizing node behavior with the LabVIEW Wireless
Sensor Network (WSN) Module Pioneer. See the LabVIEW WSN Benchmarking
document, found on NI Developer Zone, for more information.
» For complete WSN-3202 analog input node specifications, see
the NI WSN-3202 User Guide and Specifications manual at ni.com/manuals.
Analog Input Characteristics
Number of channels.............................. 4 single-ended channels
ADC resolution....................................... 16 bits
DNL ...................................................... No missing codes guaranteed
INL ...................................................... Refer to the Absolute

Accuracy Formulas
Minimum sample interval¹.................... 1 second
Input coupling........................................ DC
Nominal input ranges............................ ±10 V, ±5 V, ±2 V, ±0.5 V
Minimum over range............................. 4%
Input impedance (at DC)
Powered on....................................... >1 GΩ
Powered off/overload....................... 10 kΩ
Input bias current................................... 3 nA
Crosstalk (at 1 kHz)
Adjacent channels............................. >100 dB
Nonadjacent channels...................... >100 dB
Analog bandwidth................................. 7 kHz
Overvoltage protection.......................... ±30 V (one channel only)
1_{Minimum sample interval for WSN-3202 can be improved by customizing node behavior with the}
LabVIEW Wireless Sensor Network (WSN) Module Pioneer. See the LabVIEW WSN Benchmarking
document, found on NI Developer Zone, for more information.
AI Absolute Accuracy Tables and Formulas
The values in the following tables are based on calibrated scaling coefficients,
which are stored in the onboard EEPROM.
Nominal Range (V)
±10
Absolute Accuracy
at Full Scale (mV)¹
27.61
Random Noise
S(μV_rms)
342
Sensitivity² (μV)
137
±5
16.61
172
68.5
±2
7.72
69
27.5
±0.5
1.95
18
7
1_{Absolute accuracy values at full scale on the analog input channels assume the device is operating}
within 45 °C of the last calibration and are valid for averaging 100 samples immediately following
calibration. Refer to the Absolute Accuracy Formulas for more information.
2_{Sensitivity is the smallest voltage change that can be detected. It is a function of noise.}
Table 6. Accuracy Summary
Nominal
Range (V)
±10
±5
±2
±0.5
Residual
Gain Error
(ppm of
Reading)
102
137
182
160
Table 7. Accuracy Details
Gain
Tempco
(ppm/°C)
31
41
48
50
Residual
Offset Error
(ppm of
Range)
164
240
420
300
Absolute Accuracy Formulas
Offset
Tempco
(ppm of
Range/°C)
22
22
22
24
INL Error
(ppm of
Range)
100
100
100
100
Digital I/O
Static Characteristics
Number of channels.............................. 4 bidirectional, individually settable
Modes (configurable per channel)......... Drive High Only, Drive Low Only,

Drive High and Low, and Tristate
Voltage range
Input..................................................
Output (sourcing)...............................
Output current (sourcing or sinking)......

Power-on output state...........................
DIO power supply voltage range...........
0 to 30 V
5 to 30 V
1 A max on any one channel,
1 A total for all four channels
High impedance, tristate
5 to 30 V
Digital input logic levels
Input high range................................ 1.65 to 30 V
Input low range................................. 0 to 0.45 V
Input current
0 V input............................................
5 V input............................................
30 V input..........................................
-160 μA
125 μA
220 μA
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