SET_WAVEFORM_33510B
Python Code
from flojoy import flojoy, DataContainer, String, VisaConnection
from typing import Optional, Literal
@flojoy(inject_connection=True)
def SET_WAVEFORM_33510B(
connection: VisaConnection,
on_off: Literal["ON", "OFF"] = "OFF",
query_set: Literal["query", "set"] = "query",
channel: Literal["ch1", "ch2"] = "ch1",
waveform: Literal[
"SIN", "SQU", "TRI", "RAMP", "PULS", "PRBS", "NOIS", "ARB", "DC"
] = "SIN",
frequency: float = 1e6,
amplitude: float = 0.1,
amplitude_unit: Literal["VPP", "VRMS", "DBM"] = "VPP",
phase: float = 0,
offset: float = 0,
ramp_symmetry: float = 50,
pulse_width: float = 20,
default: Optional[DataContainer] = None,
) -> String:
"""Set waveform settings for a 33510B function generator.
The Keysight 33510B has a variety of waveform settings available.
Requires a CONNECTION_33510B node at the start of the app to connect with
the instrument. The VISA address will then be listed under 'connection'.
This node should also work with compatible Keysight 33XXX wavefunction
generators (although they are untested).
Parameters
----------
connection: VisaConnection
The VISA address (requires the CONNECTION_MDO3XXX node).
on_off: str
Whether to turn the waveform generation to on or off.
query_set: str
Whether to query or set the waveform.
channel: str
The channel to set or query.
waveform: str
The type of waveform to use.
frequency: float
The voltage of the waveform to set, in Hz.
amplitude: float
The voltage of the waveform to set.
amplitude_unit: str
The voltage unit to set the waveform to.
phase: float
The phase to set the waveform to, in degrees.
offset: float
The voltage offset to set the waveform to, in volts.
ramp_symmetry: float
The ramp symmetry if the RAMP waveform is used, in percent.
pulse_width: float
The pulse width in nanoseconds if the PULS waveform is used.
Returns
-------
DataContainer
String: Summary of waveform generator settings.
"""
ks = connection.get_handle()
channel_str = channel
channel = getattr(ks, channel)
if on_off == "OFF":
channel.output("OFF")
match query_set:
case "set":
assert (
-360.0 <= phase <= 360.0
), "The phase must be between -360 and 360 degrees."
assert (
0.0 <= ramp_symmetry <= 100.0
), "The ramp_symmetry must be between -0 and 100."
assert (
pulse_width >= 16
), "The pulse_width must be greater than or equal to 16 ns"
channel.function_type(waveform)
channel.amplitude_unit(amplitude_unit)
channel.amplitude(amplitude)
channel.phase(phase)
channel.offset(offset)
channel.frequency(frequency)
if waveform == "RAMP":
channel.ramp_symmetry(ramp_symmetry)
if waveform == "PULS":
channel.pulse_width(pulse_width)
summary = f"{channel_str}: {waveform}, amplitude: {amplitude} "
summary += f"{amplitude_unit}, frequency: {frequency} Hz"
case "query":
summary = f"{channel_str}: "
waveform = channel.function_type()
summary += f"waveform: {waveform}, \n"
amplitude_unit = channel.amplitude_unit()
amplitude = channel.amplitude()
summary += f"amplitude: {amplitude} {amplitude_unit}, \n"
frequency = channel.frequency()
summary += f"frequency: {frequency} Hz, \n"
phase = channel.phase()
summary += f"phase: {phase}, \n"
offset = channel.offset()
summary += f"offset: {offset} V, \n"
if waveform == "RAMP":
channel.ramp_symmetry(ramp_symmetry)
summary += f"ramp_symmetry: {ramp_symmetry}%, \n"
if waveform == "PULS":
channel.pulse_width(pulse_width)
summary += f"pulse_width: {pulse_width}, \n"
if on_off == "ON":
channel.output("ON")
return String(s=summary)
Example App
In this example, we change the waveform settings for the Keysight 33510B. The 33510B has many waveform settings to change including: waveform, amplitude, frequency, etc. We can also choose to turn the wavefunction generation on or off.
We must first add the CONNECTION_33510B node. This will create the connection to the instrument at the beginning of the app. To allow this we must set the VISA address for this (and all subsequent 33510B nodes). If the address does not appear in the parameters you may have to press REFRESH in the HARDWARE MANAGER tab.
We then add two of the SET_WAVEFORM_33510B nodes as well as the TEXT_VIEW node to view the summary of the changes. The first SET_WAVEFORM_33510B is used to set the parameters while the second is used to query the instrument to ensure the wavefunction parameters are correct. This can be done with the set_query parameter for the nodes.
We then must set the node parameters. First, the VISA address must be set for all nodes as mentioned above. The waveform settings were changed as follows: waveform: SIN, amplitude: 0.2, amplitude units: Vpp, frequency: 1e7 Hz, on_off: on, query_set: set. The second node only needs to ensure the query_set parameter is set to query (as well as the VISA address).
The 33510B cannot view the waveform directly. An oscilloscope can optionally be used to view the burst mode waveform.