Agilent 8257D Signal Generator¶

class pymeasure.instruments.agilent.Agilent8257D(adapter, **kwargs)¶

Bases: pymeasure.instruments.instrument.Instrument

Represents the Agilent 8257D Signal Generator and provides a high-level interface for interacting with the instrument.

generator = Agilent8257D("GPIB::1")

generator.power = 0                     # Sets the output power to 0 dBm
generator.frequency = 5                 # Sets the output frequency to 5 GHz
generator.enable()                      # Enables the output

property amplitude_depth¶: A floating point property that controls the amplitude modulation in precent, which can take values from 0 to 100 %.

property amplitude_source¶: A string property that controls the source of the amplitude modulation signal, which can take the values: ‘internal’, ‘internal 2’, ‘external’, and ‘external 2’.

property center_frequency¶: A floating point property that represents the center frequency in Hz. This property can be set.

config_amplitude_modulation(frequency=1000.0, depth=100.0, shape='sine')¶

Configures the amplitude modulation of the output signal.

Parameters

frequency – A modulation frequency for the internal oscillator
depth – A linear depth precentage
shape – A string that describes the shape for the internal oscillator

config_low_freq_out(source='internal', amplitude=3)¶

Configures the low-frequency output signal.

Parameters

source – The source for the low-frequency output signal.
amplitude – Amplitude of the low-frequency output

config_pulse_modulation(frequency=1000.0, input='square')¶

Configures the pulse modulation of the output signal.

Parameters

frequency – A pulse rate frequency in Hertz
input – A string that describes the internal pulse input

config_step_sweep()¶: Configures a step sweep through frequency

disable()¶: Disables the output of the signal.

disable_amplitude_modulation()¶: Disables amplitude modulation of the output signal.

disable_low_freq_out()¶: Disables low frequency output

disable_modulation()¶: Disables the signal modulation.

disable_pulse_modulation()¶: Disables pulse modulation of the output signal.

property dwell_time¶: A floating point property that represents the settling time in seconds at the current frequency or power setting. This property can be set.

enable()¶: Enables the output of the signal.

enable_amplitude_modulation()¶: Enables amplitude modulation of the output signal.

enable_low_freq_out()¶: Enables low frequency output

enable_pulse_modulation()¶: Enables pulse modulation of the output signal.

property frequency¶: A floating point property that represents the output frequency in Hz. This property can be set.

property has_amplitude_modulation¶: Reads a boolean value that is True if the amplitude modulation is enabled.

property has_modulation¶: Reads a boolean value that is True if the modulation is enabled.

property has_pulse_modulation¶: Reads a boolean value that is True if the pulse modulation is enabled.

property internal_frequency¶: A floating point property that controls the frequency of the internal oscillator in Hertz, which can take values from 0.5 Hz to 1 MHz.

property internal_shape¶: A string property that controls the shape of the internal oscillations, which can take the values: ‘sine’, ‘triangle’, ‘square’, ‘ramp’, ‘noise’, ‘dual-sine’, and ‘swept-sine’.

property is_enabled¶: Reads a boolean value that is True if the output is on.

property low_freq_out_amplitude¶: A floating point property that controls the peak voltage (amplitude) of the low frequency output in volts, which can take values from 0-3.5V

property low_freq_out_source¶: A string property which controls the source of the low frequency output, which can take the values ‘internal [2]’ for the inernal source, or ‘function [2]’ for an internal function generator which can be configured.

property power¶: A floating point property that represents the output power in dBm. This property can be set.

property pulse_frequency¶: A floating point property that controls the pulse rate frequency in Hertz, which can take values from 0.1 Hz to 10 MHz.

property pulse_input¶: A string property that controls the internally generated modulation input for the pulse modulation, which can take the values: ‘square’, ‘free-run’, ‘triggered’, ‘doublet’, and ‘gated’.

property pulse_source¶: A string property that controls the source of the pulse modulation signal, which can take the values: ‘internal’, ‘external’, and ‘scalar’.

shutdown()¶: Shuts down the instrument by disabling any modulation and the output signal.

property start_frequency¶: A floating point property that represents the start frequency in Hz. This property can be set.

property start_power¶: A floating point property that represents the start power in dBm. This property can be set.

start_step_sweep()¶: Starts a step sweep.

property step_points¶: An integer number of points in a step sweep. This property can be set.

property stop_frequency¶: A floating point property that represents the stop frequency in Hz. This property can be set.

property stop_power¶: A floating point property that represents the stop power in dBm. This property can be set.

stop_step_sweep()¶: Stops a step sweep.