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Rohde & Schwarz SCPI Driver

Project description

Rohde&Schwarz Python SCPI Driver

Project goals:

  • Example python drivers

    • FSW, Vector Spectrum Analyzer
    • SMW, Vector Signal Generator
    • NRP, Power Sensor
    • VSE, Vector Signal Explorer
    • VST, Vectro Signal Transciever (FSW/SMW calls)
    • OSP, Switch Driver
    • NRQ, Frequency Selective Power Sensor
  • Example code

    • Automated test example
    • Instrument speed/repeatability evaluation
    • Proof of concept/Demo code
  • RSSD is in development.

    • Package APIs may change.
    • We recommend users "freeze/save" package version prior to use.

Drivers Structure:

  • Driver Structure:
    • Common Driver Call: pyvisa → → <instr> →
    • Instrument Options: pyvisa → → <instr> → <instr>_<OptionName>
  • yaVISA: pyvisa wrapper
    • yaVISA.jav_Open(sFileName, sLogFile): Open VISA link
    • yaVISA.write(sSCPI): Write SCPI command
    • yaVISA.query(sSCPI): Query SCPI command
    • yaVISA.jav_logscpi(): Turn on "SCPI to file"
    • yaVISA.jav_OPC_Wait(sCmd): Wait for longer commands.
    • Please see for full list of commands.

Instrument Drivers:

  • FSW: Vector Spectrum Analyzer
    • Developed & Tested with FSW
    • FSW & VSE share many commands.
    • Possible compatibility: VSE; FPS; FSV;
  • SMW: Vector Signal Generator
    • Developed & Tested with SMW
    • Possible compatibility: SGS; SGT; SMB; SMBV
  • NRP: Power Sensor
    • Developed & Tested with NRPxxS/SN sensors
  • VSE: Vector Signal Explorer SW
    • Developed & Tested with VSE
    • Drivers represent VSE commands not in FSW code
    • OFDMVSA K96 code resides here as well
    • Possible compatibility: FSW
  • VST: Vector Signal Transceiver
    • Code that calls both SMW & FSW
    • Typically protocol such as: LTE & 5GNR
  • OSP: Open Switch and Control Platform
    • Developed & TEsted with OSP120

Getting Started


    python -m pip install rssd


  • Load example files in <Python Install Directory>\Lib\site-packages\rssd\examples
  • Change IP address to match instrument(s)
  • Run

Example Code:

| FileName                | Descriptions                       |
| FSW_ACLR_Timing         | ACLR in Spectral Mode              |
| FSW_ACLR_IQ_Timing      | ACLR in IQ Analyzer                |
| FSW_CCDF                | CCDF in Spectral Mode              |
| FSW_IQCaptureTime       | IQ Capture time looping Fs         |
| NRP_BufferedContAvg     | Bufferened NRP measurement         |
|          | Load Arb file into SMW             |
| OSP_Debug               | Generic OSP example                |
|           | VSE/FSW Analog FM Demod            |
|            | VSE Raw SCPI                       |
|     | VSE Single OFDM Carrier EVM w/ K96 |
| | VSE Multi  OFDM Carrier EVM w/ K96 |
| VST_5GNR_EVMSpeed       | FSW K144 speed tests               |
| VST_5GNR_K144_Read      | Read SMW/FSW 5G NR Parameters      |
|            | SMW/FSW Frequency Sweep            |


  • Code Repository: GitHub
  • Author: Martin C Lim
  • License: This project is licensed under the R&S License for Royalty-Free Products- see the LICENSE file for details


Driver Description User Manual Models
SMW Vector Signal Generator User Manual SMW; SMBV; SGT; SGS; SMA
FSW Vector Signal Analyzer User Manual FSW; FSVA;
VSE Vector Analysis Software User Manual VSE
CMW Basestation Emulator User Manual CMW500; CMW100
NRP Three Path Power Sensor User Manual NRP; NRPM
NRQ Freq Selective Pwr Sensor User Manual Options
OSP Switch Matrix User Manual OPS1xx; OPS2xx
VNA Network Analyzer User Manual ZVA; ZNA; ZNB



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