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NI 9144 User Guide and Specifications
NI 9219 Configuration Data
Note
When any AI data channel is configured for Thermocouple, ADC conversion
time increases by 10 ms for all channels. Refer to
Max Frequency
in Table 58 for
various ACD timing configurations. The TC mode/range configuration code is 0x0A.
Table 57.
NI 9219 Scan List Format
Bits
Field
Description
7..6
Channel Number,
<0..3>
—
5
= 0
—
4..0
Configuration Type
Configuration Type values:
Conversion Time
Mode & Range
Calibration Offset 2 (LSB)
Calibration Offset 1
Calibration Offset 0 (MSB)
Calibration Gain 2 (LSB)
Calibration Gain 1
Calibration Gain 0 (MSB)
0x1F
0x01
0x06
0x05
0x04
0x0A
0x09
0x08
Table 58.
NI 9219 Type Conversion Time
Configuration
Value
Max Frequency
Conversion Time
Description
0x01
100 Hz/50 Hz (TC)
10 ms/20 ms (TC)
High Speed
0x08
9.09 Hz/8.33 Hz (TC)
110 ms/120 ms (TC)
Best 60 Hz
Rejection
0x09
7.69 Hz/7.14 Hz (TC)
130 ms/140 ms (TC)
Best 50 Hz
Rejection
0x0F
2 Hz/1.96 Hz (TC)
500 ms/510 ms (TC)
High Resolution