NI 9144 User Guide and Specifications
40
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NI 9219 Error Status
Caution
Configuring all the channels in full-bridge mode shorts the channels and results
in the firmware setting all the bits in the lower nibble.
When a channel over-current condition occurs on any of the channels of the
NI 9219 (such as, configure channels in 4-wire resistance mode and do not
connect a resistor to the channel), the firmware sets a bit in the lower nibble
indicating the presence of this condition (LSB = ch0).
NI 9219 Calibration Data
The NI 9219 has four channels which each have 21 different operating
modes and ranges. Each channel has an associated LSB weight, which is
the number of volts per bit, and an offset, which is the number of volts per
bit measured when the inputs are grounded.
Note
LSB weight is referred to as Gain in the object dictionary.
The operating modes and ranges, in the order they are defined in the
calibration table for each channel, are:
Table 34.
NI 9219 Channel Calibration
Entry
Number
Mode
Range
1
Voltage
±60 V
2
±15 V
3
±4 V
4
±1 V
5
±125 mV
6
Current
±25 mA
7
4-Wire Resistance
10 k
Ω
8
1 k
Ω
9
2-Wire Resistance
10 k
Ω
10
1 k
Ω
11
Thermocouple
n/a
12
4-Wire RTD
Pt1000
13
Pt100