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NI 9144 User Guide and Specifications
Use the calibration coefficients with the following equation to generate corrected data:
where
V
corrected
represents the calibrated voltage value
V
raw
(
bits
)
represents data returned by the NI 9215 in bits
NI 9217
The vendor configuration extensions for the NI 9217 are listed in Table 41.
Table 41.
NI 9217 Vendor Configuration Extensions
Index
Sub
Type
R/W
Description
0x2001
0
ARR:U32
—
Scan List = 5
1
R
Channels to Convert = <1..4>,
default = 4
2..5
R/W
Channel Code
0x2002
0
U32
R/W
Conversion Speed Control = 2 or 31,
default = 31
0x2100
0
ARR:U32
—
Calibration = 16
1
R
Ch0 Offset
2
R
Ch0 Gain
3
R
Ch1 Offset
...
—
—
8
R
Ch3 Gain
9
R
External Ch0 Offset
...
—
—
Vcorrected Vraw
(
)
Vraw bits
(
)
LSBweight
nV
bits
----------
10
9
–
×
V
nV
-------
×
Offset nV
(
)
10
9
–
×
V
nV
-------
–
=