---
title: PulseDefaults (v1.0)
description: API reference for qiskit.providers.models.PulseDefaults in qiskit v1.0
source: https://eu-de.quantum.cloud.ibm.com/docs/en/api/qiskit/1.0/qiskit.providers.models.PulseDefaults
---

# PulseDefaults

*class* `qiskit.providers.models.PulseDefaults(qubit_freq_est, meas_freq_est, buffer, pulse_library, cmd_def, meas_kernel=None, discriminator=None, **kwargs)`

[GitHub](https://github.com/Qiskit/qiskit/tree/stable/1.0/qiskit/providers/models/pulsedefaults.py#L163-L304)

Bases: [`object`](https://docs.python.org/3/library/functions.html#object)

Description of default settings for Pulse systems. These are instructions or settings that may be good starting points for the Pulse user. The user may modify these defaults for custom scheduling.

Validate and reformat transport layer inputs to initialize. :param qubit\_freq\_est: Estimated qubit frequencies in GHz. :param meas\_freq\_est: Estimated measurement cavity frequencies in GHz. :param buffer: Default buffer time (in units of dt) between pulses. :param pulse\_library: Pulse name and sample definitions. :param cmd\_def: Operation name and definition in terms of Commands. :param meas\_kernel: The measurement kernels :param discriminator: The discriminators :param \*\*kwargs: Other attributes for the super class.

## Attributes

### qubit\_freq\_est

Qubit frequencies in Hertz.

### meas\_freq\_est

Measurement frequencies in Hertz.

## Methods

### from\_dict

*classmethod* `from_dict(data)`

[GitHub](https://github.com/Qiskit/qiskit/tree/stable/1.0/qiskit/providers/models/pulsedefaults.py#L262-L292)

Create a new PulseDefaults object from a dictionary.

**Parameters**

**data** ([*dict*](https://docs.python.org/3/library/stdtypes.html#dict)) – A dictionary representing the PulseDefaults to create. It will be in the same format as output by [`to_dict()`](#qiskit.providers.models.PulseDefaults.to_dict "qiskit.providers.models.PulseDefaults.to_dict").

**Returns**

The PulseDefaults from the input dictionary.

**Return type**

[PulseDefaults](#qiskit.providers.models.PulseDefaults "qiskit.providers.models.PulseDefaults")

### to\_dict

`to_dict()`

[GitHub](https://github.com/Qiskit/qiskit/tree/stable/1.0/qiskit/providers/models/pulsedefaults.py#L227-L260)

Return a dictionary format representation of the PulseDefaults. :returns: The dictionary form of the PulseDefaults. :rtype: dict