National Instruments AT E Series - Manual (Page 34)

Chapter 3 Hardware Overview
AT E Series User Manual 3-8 ni.com
AT-MIO-16E-10, and AT-MIO-16DE-10 have gains of 0.5, 1, 2, 5, 10, 20,
50, and 100 and are suited for a wide variety of signal levels. With the
proper gain setting, you can use the full resolution of the ADC to measure
the input signal. Table 3-2 shows the overall input range and precision
according to the input range configuration and gain used.
♦ AT-MIO-16XE-10, AT-AI-16XE-10, AT-MIO-16XE-50
These devices have two input polarities—unipolar and bipolar. Unipolar
input means that the input voltage range is between 0 and V
ref
, where V
ref
is a positive reference voltage. Bipolar input means that the input voltage
range is between –V
ref
and +V
ref
. The AT-MIO-16XE-10, AT-AI-16XE-10,
and AT-MIO-16XE-50 have a unipolar input range of 10 V (0 to 10 V) and
a bipolar input range of 20 V (±10 V). You can program polarity and range
settings on a per channel basis so that you can configure each input channel
uniquely.
Table 3-2. Actual Range and Measurement Precision
Range
Configuration Gain Actual Input Range Precision 1
0 to +10 V 1.0
2.0
5.0
10.0
20.0
50.0
100.0
0 to +10 V
0 to +5 V
0 to +2 V
0 to +1 V
0 to +500 mV
0 to +200 mV
0 to +100 mV
2.44 mV
1.22 mV
488.28 µV
244.14 µV
122.07 µV
48.83 µV
24.41 µV
–5 to +5 V 0.5
1.0
2.0
5.0
10.0
20.0
50.0
100.0
–10 to +10 V
–5 to +5 V
–2.5 to +2.5 V
–1 to +1 V
–500 to +500 mV
–250 to +250 mV
–100 to +100 mV
–50 to +50 mV
4.88 mV
2.44 mV
1.22 mV
488.28 µV
244.14 µV
122.07 µV
48.83 µV
24.41 µV
1 The value of 1 LSB of the 12-bit ADC; that is, the voltage increment corresponding to a
change of one count in the ADC 12-bit count.
Note: Refer to Appendix A, Specifications , for absolute maximum ratings.