NI 9144 User Guide and Specifications
|
© National Instruments
|
8
3
Use the calibration coefficients with the following equation to generate corrected data:
where
V
raw
(
bits
) represents data returned by the NI 9237 in bits
V
corrected
represents the corrected voltage value
NI 9242/9244
The vendor configuration extensions for the NI 9242/9244 are listed in Table 89.
As a DSA module, the NI 9242/9244 does not synchronize to other module and free-runs at its
own fixed rate.
NI 9242/9244 Configure ADC
The NI 9242-9244 converts at various rates, controlled by the field in the ADC conversion
command.
Table 89.
NI 9242/9244 Vendor Configuration Extensions
Index
Sub
Type
R/W
Description
0x2002
0
U32
R/W
Configure ADC,
default = 0x6
0x2100
0
ARR:U16
—
Calibration = 16
1
R
Ch0 Offset
2
R
Ch0 Gain
3
R
Ch1 Offset
...
—
—
8
R
Ch3 Gain
9
R
User Calibration Ch0
Offset
...
—
—
Vcorrected Vraw
(
)
Vraw bits
(
)
LSBweight
10
13
–
×
×
Offset pV
(
)
10
8
–
×
–
=
