RsInstrument 1.2.0.25

VISA communication module for Rohde & Schwarz instruments

RsInstrument is a Python module that provides convenient way of communicating with R&S instruments over VISA It uses PyVisa to build instrument model layer that provides all the required tasks you might need when remote-controlling your instrument:

• Initializing a new session with setting all the required VISA and instrument registers depending on the session type
• Identification of the instrument, supported models, evaluation of the instrument options
• Special actions, e.g. Self-test, reset
• Typical text communication - Write / Query / Query
• OPC-synchronised actions - Write / Query with OPC. The synchronization mechanism can be: Status byte polling / *OPC? query, Service Request
• Asynchronous events-driven OPC-synchronised actions. After the instrument has finished the operation, a registered event handler is invoked
• Binary data transfer - Write / Query bin data
• Transfer of files between PC and Instrument, the size is unlimited
• Binary or ASCII arrays transfers - adaptable querying of float / double / integer arrays The response is processed correctly regardless whether it arrives as binary data or ASCII data
• Instrument status checking (SYSTem:ERRor?) after each command. This can be switched OFF if desired
• Optional feature of sending (*OPC?) after each Write command
• Multi-thread locking of the session, also available throughout multiple RsInstrument instances
• Sharing of the already openeed session with another RsInstrument instance, so the physical VISA session is still only one
• Logging of the communication
• Generating events if:
  • instrument reports an error
  • Operation Register event has occured
  • Questionable Register event has occured
  • big transferred data (write or read) are split into segments. This allows for showing the transfer progress, or in case of read operation processing partial data without having to wait for the complete response.

Version history:

Version 1.2.0.25 (03.08.2020)

• Fixed reading of long strings for NRP-Zxx sessions

Version 1.1.0.24 (16.06.2020)

• Fixed simulation mode

Version 1.0.0.21

• First released version