lightlab.equipment.visa_bases.visa_object module¶

Summary¶

Classes:

VISAObject Abstract class for something that communicates via messages (GPIB/USB/Serial/TCPIP/etc.).

Data:

`CR`	str(object=’‘) -> str str(bytes_or_buffer[, encoding[, errors]]) -> str
`LF`	str(object=’‘) -> str str(bytes_or_buffer[, encoding[, errors]]) -> str
`OPEN_RETRIES`	int(x=0) -> integer int(x, base=10) -> integer

Reference¶

class VISAObject(address=None, tempSess=False)[source]¶

Bases: lightlab.equipment.visa_bases.driver_base.InstrumentSessionBase

Abstract class for something that communicates via messages (GPIB/USB/Serial/TCPIP/etc.). It handles message-based sessions in a way that provides a notion of object permanence to the connection with a particular address.

It acts like a pyvisa message-based session, but it is not a subclass; it is a wrapper. It only contains one (at at time). That means VISAObject can offer extra opening, closing, session management, and error reporting features.

This class relies on pyvisa to work

Parameters:	tempSess (bool) – If True, the session is opened and closed every time there is a command address (str) – The full visa address