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 → yaVISA.py → <instr>_Common.py →
  • Instrument Options: pyvisa → yaVISA.py → <instr>_Common.py → <instr>_<OptionName>_Kxx.py
• 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 yaVISA.py 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

Installing

    python -m pip install rssd

Running

• 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         |
| SMW_LoadArb.py          | Load Arb file into SMW             |
| OSP_Debug               | Generic OSP example                |
| VSE_ADemod.py           | VSE/FSW Analog FM Demod            |
| VSE_Debug.py            | VSE Raw SCPI                       |
| VSE_OFDM_1CC_K96.py     | VSE Single OFDM Carrier EVM w/ K96 |
| VSE_OFDM_MultiCC_K96.py | VSE Multi  OFDM Carrier EVM w/ K96 |
| VST_5GNR_EVMSpeed       | FSW K144 speed tests               |
| VST_5GNR_K144_Read      | Read SMW/FSW 5G NR Parameters      |
| VST_Sweep.py            | SMW/FSW Frequency Sweep            |

Project

• 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

References

Acknowledgments

Acknowledgments

• Thanx to Nick Lalic for all his help.
• Markdown reference