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39
NI 9144 User Guide and Specifications
NI 9219 ADC Format
The NI 9219 converts at different rates, and can specify different data
formatting styles. This is determined by both the ADC Format field and
corresponding fields in the setup commands. The format of the ADC
Format field is shown in Table 33.
formatting styles. This is determined by both the ADC Format field and
corresponding fields in the setup commands. The format of the ADC
Format field is shown in Table 33.
Standard values for ADC Format are:
•
0x0001000F, High-Speed
•
0x000B000F, Best 60 Hz Rejection
•
0x000D000F, Best 50 Hz Rejection
•
0x0032000F, High-Resolution
0x2100
0
ARR:U32
—
Calibration = 168
1
R
Ch0 60 V Offset
2
R
Ch0 60 V Offset
3
R
Ch0 15 V Offset
...
...
...
42
R
Ch0 Full Bridge 7.8m V–V Gain
43
R
Ch1 60 V Offset
...
...
...
0x2101
0
ARR:U32
Q
External Calibration = 168
1
—
R
Ch0 60 V Offset
...
...
...
...
...
Table 33. NI 9219 ADC Format Field Format
Bits
Field
31:24
Reserved
23:16
Conversion speed in multiples of 10 mS
15:8
Reserved
7:0
AI Data Formatting
Table 32. NI 9219 Vendor Configuration Extensions (Continued)
Index
Sub
Type
R/W
Description