Table 34. ni 9219 channel calibration – National Instruments Deterministic Ethernet Expansion Chassis NI 9144 User Manual

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NI 9144 User Guide and Specifications

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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

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