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CONNECT_AFG31000

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Connect Flojoy to a AFG31000 function generator. The connection is made with the VISA address in the Flojoy UI. This block should also work with compatible Tektronix AFG31XXX instruments. Params: device : VisaDevice The VISA address to connect to. Returns: device_addr : String The IP or VISA address of the VISA device.
Python Code
from flojoy import VisaDevice, flojoy, String
from flojoy.connection_manager import DeviceConnectionManager
from pyvisa import ResourceManager
from usb.core import USBError


@flojoy
def CONNECT_AFG31000(
    device: VisaDevice,
) -> String:
    """Connect Flojoy to a AFG31000 function generator.

    The connection is made with the VISA address in the Flojoy UI.

    This block should also work with compatible Tektronix AFG31XXX instruments.

    Parameters
    ----------
    device: VisaDevice
        The VISA address to connect to.

    Returns
    -------
    device_addr: String
        The IP or VISA address of the VISA device.
    """

    rm = ResourceManager("@py")
    addr = device.get_id()

    try:
        afg = rm.open_resource(addr)
    except USBError as err:
        raise Exception(
            "USB port error. Trying unplugging+replugging the port."
        ) from err

    afg.read_termination = "\n"
    afg.write_termination = "\n"
    DeviceConnectionManager.register_connection(device, afg)

    return String(s=addr)

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Videos

Control the AFG31000 Function Generator with Flojoy

Example App

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React Flow mini map

In this example, an Tektronix AFG31000 is used to generate two waveforms.

First the necessary blocks were added:

  • CONNECT_AFG31000
  • RESET_AFG31000
  • 2x FUNCTION_AFG31000
  • ALIGN_PHASES_AFG31000
  • OUTPUT_AFG31000
  • SAVE_STATE_AFG31000

The instrument address was set for each AFG31000 block. Ensure the OUTPUT_AFG31000 block has both channels turn on.

The blocks were connected as shown and the app was run. The SAVE_STATE_AFG31000 block can be used to save and recall the current state of the AFG. However, you must use a OUTPUT_AFG31000 block to turn the outputs back on.

An oscilloscope was connected to the AFG31000 resulting in waveform:

image