FSV instrument nodes and peak detection

IO/INSTRUMENTS/SIGNAL_ANALYZERS/ROHDE_SCHWARZ/FSV/BASIC/CONNECTION_FSV/CONNECTION_FSV.py

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+from flojoy import VisaDevice, flojoy, DataContainer
+from flojoy.connection_manager import DeviceConnectionManager
+from typing import Optional
+from pyvisa import ResourceManager
+
+
+@flojoy()
+def CONNECTION_FSV(
+    device: VisaDevice,
+    default: Optional[DataContainer] = None,
+) -> Optional[DataContainer]:
+    """The CONNECTION_FSV node connects Flojoy to a FSV network analyzer.
+
+    The connection is made with the VISA address in the Flojoy UI.
+
+    This node should also work with compatible R&S network analyzers.
+
+    Parameters
+    ----------
+    device: VisaDevice
+        The VISA address to connect to.
+
+    Returns
+    -------
+    DataContainer
+        Optional: None
+    """
+
+    rm = ResourceManager("@py")
+    rohde = rm.open_resource(device.get_id())
+    rohde.read_termination = "\n"
+    rohde.write_termination = "\n"
+
+    DeviceConnectionManager.register_connection(device, rohde)
+
+    return None