IEEE488.2

Every SCPI interface is based on the IEEE488.2 protocol. This Python implementation separates the protocol into two layers:

IEEE488.2 layer: IEEE488.2 layer that implements the protocol based on the transport layer.
Transport layer: Transport layers responsible for lowest level of communcation (e.g. Ethernet or dummy).”

IEEE488.2 layer

class qblox_instruments.ieee488_2.Ieee488_2(transport: qblox_instruments.ieee488_2.transport.Transport)[source]

Bases: object

Class that implements the IEEE488.2 interface.

__init__(transport: qblox_instruments.ieee488_2.transport.Transport)[source]

Creates IEEE488.2 interface object.

Parameters: transport (Transport) – Transport class responsible for the lowest level of communication (e.g. ethernet).

Transport layer

class qblox_instruments.ieee488_2.IpTransport(host: str, port: int = 5025, timeout: float = 60.0, snd_buf_size: int = 524288)[source]

Bases: qblox_instruments.ieee488_2.transport.Transport

Class for data transport of IP socket.

__init__(host: str, port: int = 5025, timeout: float = 60.0, snd_buf_size: int = 524288)[source]

Create IP socket transport class.

Parameters

host (str) – Instrument IP address.
port (int) – Instrument port.
timeout (float) – Instrument call timeout in seconds.
snd_buf_size (int) – Instrument buffer size for transmissions to instrument.

close() → None[source]: Close IP socket.

write(cmd_str: str) → None[source]

Write command to instrument over IP socket.

Parameters: cmd_str (str) – Command

write_binary(data: bytes) → None[source]

Write binary data to instrument over IP socket.

Parameters: data (bytes) – Binary data

read_binary(size: int) → bytes[source]

Read binary data from instrument over IP socket.

Parameters: size (int) – Number of bytes
Returns: Binary data array of length “size”.
Return type: bytes

readline() → str[source]

Read data from instrument over IP socket.

Returns: String with data.
Return type: str

class qblox_instruments.ieee488_2.PulsarDummyTransport(dummy_type: Union[qblox_instruments.types.PulsarType, qblox_instruments.types.ClusterType], scope_acq_cfg_format: str, qcm_seq_cfg_format: str, qrm_seq_cfg_format: str)[source]

Bases: qblox_instruments.ieee488_2.qcm_qrm_dummy_transport.QcmQrmDummyTransport

Class to replace Pulsar device with dummy device to support software stack testing without hardware. The class implements all mandatory, required and Pulsar specific SCPI calls. Call reponses are largely artifically constructed to be inline with the call’s functionality (e.g. *IDN? returns valid, but artificial IDN data.) To assist development, the Q1ASM assembler has been completely implemented. Please have a look at the call’s implentation to know what to expect from its response.

class qblox_instruments.ieee488_2.ClusterDummyTransport(dummy_cfg: Dict, scope_acq_cfg_format: str, qcm_seq_cfg_format: str, qrm_seq_cfg_format: str)[source]

Bases: qblox_instruments.ieee488_2.dummy_transport.DummyTransport

Class to replace Cluster device with dummy device to support software stack testing without hardware. The class implements all mandatory, required and Cluster specific SCPI calls. Call reponses are largely artifically constructed to be inline with the call’s functionality (e.g. *IDN? returns valid, but artificial IDN data.) To assist development, the Q1ASM assembler has been completely implemented. Please have a look at the call’s implentation to know what to expect from its response.

__init__(dummy_cfg: Dict, scope_acq_cfg_format: str, qcm_seq_cfg_format: str, qrm_seq_cfg_format: str)[source]

Create Cluster dummy transport class.

Parameters

dummy_cfg (Dict) – Dictionary of dummy module types (e.g. Cluster QCM, Cluster QRM). Each key of the dictionary is a slot index with a dummy type specification of type ClusterType.
scope_acq_cfg_format (str) – Configuration format based on struct.pack format used to calculate scope acquisition configuration transaction size.
qcm_seq_cfg_format (str) –
QCM sequencer configuration format based on struct.pack format used to calculate scope acquisition configuration transaction size.
qrm_seq_cfg_format (str) –
QRM sequencer configuration format based on struct.pack format used to calculate scope acquisition configuration transaction size.

Supporting classes and functions

class qblox_instruments.ieee488_2.QcmQrmDummyTransport(dummy_type: Union[qblox_instruments.types.PulsarType, qblox_instruments.types.ClusterType], scope_acq_cfg_format: str, qcm_seq_cfg_format: str, qrm_seq_cfg_format: str)[source]

Bases: qblox_instruments.ieee488_2.dummy_transport.DummyTransport

Class to replace a QCM/QRM module with a dummy device to support software stack testing without hardware. The class implements all mandatory, required and QCM/QRM specific SCPI calls. Call reponses are largely artifically constructed to be inline with the call’s functionality (e.g. *IDN? returns valid, but artificial IDN data.) To assist development, the Q1ASM assembler has been completely implemented. Please have a look at the call’s implentation to know what to expect from its response.

__init__(dummy_type: Union[qblox_instruments.types.PulsarType, qblox_instruments.types.ClusterType], scope_acq_cfg_format: str, qcm_seq_cfg_format: str, qrm_seq_cfg_format: str)[source]

Create QCM/QRM dummy transport class.

Parameters

dummy_type (Union[PulsarType, ClusterType]) – Dummy module type (e.g. Pulsar QCM, Pulsar QRM)
scope_acq_cfg_format (str) –
Configuration format based on struct.pack format used to calculate scope acquisition configuration transaction size.
qcm_seq_cfg_format (str) –
QCM sequencer configuration format based on struct.pack format used to calculate scope acquisition configuration transaction size.
qrm_seq_cfg_format (str) –
QRM sequencer configuration format based on struct.pack format used to calculate scope acquisition configuration transaction size.

property is_qcm_type: bool

Return if module is of type QCM.

Returns: True if module is of type QCM.
Return type: bool

property is_qrm_type: bool

Return if module is of type QRM.

Returns: True if module is of type QRM.
Return type: bool

property is_rf_type: bool

Return if module is of type QCM-RF or QRM-RF.

Returns: True if module is of type QCM-RF or QRM-RF.
Return type: bool

class qblox_instruments.ieee488_2.DummyTransport(dummy_type: Union[qblox_instruments.types.PulsarType, qblox_instruments.types.ClusterType])[source]

Bases: qblox_instruments.ieee488_2.transport.Transport

Class to replace device with dummy device to support software stack testing without hardware. The class implements all mandatory and required SCPI calls. Call reponses are largely artifically constructed to be inline with the call’s functionality (e.g. *IDN? returns valid, but artificial IDN data.)

__init__(dummy_type: Union[qblox_instruments.types.PulsarType, qblox_instruments.types.ClusterType])[source]

Create dummy transport class.

Parameters: dummy_type (Union[PulsarType, ClusterType]) – Dummy instrument type (e.g. Pulsar QCM, Pulsar QRM)

property instrument_class: str

Get instrument class (e.g. Pulsar, Cluster).

Returns: Instrument class
Return type: str

property instrument_type: str

Get instrument type (e.g. MM, QRM, QCM).

Returns: Instrument type
Return type: str

close() → None[source]: Close and resets base dummy transport class.

write(cmd_str: str) → None[source]

Write command to dummy. Stores command in command history.

Parameters: cmd_str (str) – Command

write_binary(data: bytes) → None[source]

Write binary data to dummy. Stores command in command history.

Parameters: data (bytes) – Binary data

read_binary(size: int) → bytes[source]

Read binary data from dummy.

Parameters: size (int) – Number of bytes
Returns: Binary data array of length “size”.
Return type: bytes

readline() → str[source]

Read data from dummy.

Returns: String with data.
Return type: str

get_cmd_hist() → list[source]

Get list of every executed command since the initialization or reset of the class.

Returns: List of executed command strings including arguments (does not include binary data argument).
Return type: list

class qblox_instruments.ieee488_2.Transport[source]

Bases: object

Abstract base class for data transport to instruments.

abstract close() → None[source]: Abstract method to close instrument.

abstract write(cmd_str: str) → None[source]

Abstract method to write command to instrument.

Parameters: cmd_str (str) – Command

abstract write_binary(data: bytes) → None[source]

Abstract method to write binary data to instrument.

Parameters: data (bytes) – Binary data

abstract read_binary(size: int) → bytes[source]

Abstract method to read binary data from instrument.

Parameters: size (int) – Number of bytes
Returns: Binary data array of length “size”.
Return type: bytes

abstract readline() → str[source]

Abstract method to read data from instrument.

Returns: String with data.
Return type: str