Table Of Contents

4022 Control (G Dataflow)

Version:
    Last Modified: September 16, 2017

    Configures the PXI-4022 PXI amplifier module.

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    resource name

    Resource name of the device to initialize. The resource name is assigned in NI MAX.

    Examples

    The following examples are valid syntax for this parameter:

    • NI-DAQmx name
    • DAQ::NI-DAQmx name[::INSTR]
    • DAQ::Traditional NI-DAQ device number[::INSTR]
    • IVI logical name
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    Caution  

    All IVI names for the resource name, such as logical names or virtual names, are case-sensitive. If you use logical names, driver session names, or virtual names in your program, you must make sure that the name you use matches the name in the IVI Configuration Store file exactly, without any variations in the case of the characters in the name.

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    4022 configuration

    Operating mode of the Guard and Current Amplifier module. The driver by default sets the module to operate as a guard output.

    Name Value Description
    GUARD 0 Enables the internal amplifier to be a unity gain buffer for performing 6-wire guarded measurements.
    Current Amp 100 nA 2 Enables the low current amplifier and applies a gain of 1E8 V/A.
    Current Amp 10uA 3 Enables the low current amplifier and applies a gain of 1E6 V/A.
    Current Amp 1mA 7 Enables the low current amplifier and applies a gain of 1E4 V/A.
    Disconnect +IN from AGND 8 When one of the current amplification ranges is selected, the +INPUT of the amplifier is tied to analog ground. This is the default case. This default configuration can be overridden by selecting this option to disconnect the +INPUT, and allow the user to provide an external reference. Calling one of the current amplification ranges after calling this node will reconnect the +INPUT to analog ground.
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    error in

    Error conditions that occur before this node runs.

    The node responds to this input according to standard error behavior.

    Standard Error Behavior

    Many nodes provide an error in input and an error out output so that the node can respond to and communicate errors that occur while code is running. The value of error in specifies whether an error occurred before the node runs. Most nodes respond to values of error in in a standard, predictable way.

    error in does not contain an error error in contains an error
    If no error occurred before the node runs, the node begins execution normally.

    If no error occurs while the node runs, it returns no error. If an error does occur while the node runs, it returns that error information as error out.

    If an error occurred before the node runs, the node does not execute. Instead, it returns the error in value as error out.

    Default: No error

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    error out

    Error information.

    The node produces this output according to standard error behavior.

    Standard Error Behavior

    Many nodes provide an error in input and an error out output so that the node can respond to and communicate errors that occur while code is running. The value of error in specifies whether an error occurred before the node runs. Most nodes respond to values of error in in a standard, predictable way.

    error in does not contain an error error in contains an error
    If no error occurred before the node runs, the node begins execution normally.

    If no error occurs while the node runs, it returns no error. If an error does occur while the node runs, it returns that error information as error out.

    If an error occurred before the node runs, the node does not execute. Instead, it returns the error in value as error out.

    Where This Node Can Run:

    Desktop OS: Windows

    FPGA: Not supported

    Web Server: Not supported in VIs that run in a web application


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