Chapter3 HardwareOverview
©NationalInstruments Corporation 3-9 ATE Series User Manual
Note Youcan calibrate the AT-MIO-16XE-10, AT-AI-16XE-10,and AT-MIO-16XE-50
AIcircui try for either a unipolar or bipolar polarity.If you mix unipolar and bipolar
channelsin the s canlist and you are using NI-DAQ, then NI-DAQ loads the calibration
constants appropriate to the polarity for which AI channel 0 is configured.
The software-programmablegain on these devices increases their overall
flexibility bymatching the input sig nal ranges to those that the ADC can
accommodate.The AT-MIO-16XE-10 and AT-AI-16XE-10have gains of
1,2, 5, 10, 20, 50, and 100 and the AT-MIO-16XE-50 has gains of 1, 2, 10,
and100. These gains are suited for a wide variety of signal levels. With the
propergain setting, youcan use the full resolutiono f the ADC to measure
the input signal. Table3-3 shows the overall input range and precision
according to the input range configurationand gain used.
Table3-3. Actual Range and Measurement Precision for the AT-MIO-16XE-10,
AT-AI-16XE-10,and AT-MIO-16XE-50
Range
Configuration Gain ActualInput Range Precision1
0to+10V 1.02
2.02
5.02
10.02
20.02
50.02
100.02
0to+10V
0to+5V
0to+2V
0to+1V
0t o +500 mV
0t o +200 mV
0t o 100 mV
152.59 µV
76.29 µV
30.52 µV
15.26 µV
.63 µV
3.05 µV
1.53 µV
–10 to +10 V 1.02
2.02
5.02
10.02
20.02
50.02
100.02
–10 to+1 0 V
–5to+5V
–2to+2V
–1to+1V
–500 to +500 mV
–200 to +200 mV
–100 to +100 mV
305.18 µV
152.59 µV
61.04 µV
30.52 µV
15.26 µV
6.10 µV
3.05 µV
1Thevalue of 1 LSB of the 16-bit ADC; that is, the voltage increment correspon ding to a
changeof one count in the ADC 16-bit count.
2AT-MIO-16XE-10andAT-AI-16XE-10only
Note:Refer to Appendix A, Specifications, for absolute maximum ratings.