rssd 2019.5.3

Rohde & Schwarz SCPI Driver

Rohde&Schwarz Python SCPI Driver

Description

• Example python drivers

  • FSW, Vector Spectrum Analyzer
  • SMW, Vector Signal Generator
  • NRP, Power Sensor
  • VSE, Vector Signal Explorer
  • VST, Vectro Signal Transciever (Calls to FSW & SMW)
  • OSP, Switch Driver
  • NRQ, Frequency Selective Power Sensor

• Example code

  • Automated test examples (see below table)
  • 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.
  • SW is provided as is

Getting Started

Installation

python -m pip install rssd

Running

• Load example files in <Python Install Directory>\Lib\site-packages\rssd\examples

  python -m pip show rssd
  

• Change IP address to match instrument(s)

• Run

Example Code

FileName	Instrumnt	Description
AAA_CommandTime	Any	Time command to instrument
AAA_IDN_IPArry	Any	Send *IDN to instruments in IPArry
FSW_ACLR_Timing	VSA	ACLR in Spectral Mode
FSW_ACLR_IQ_Timing	VSA	ACLR in IQ Analyzer
FSW_CCDF	VSA	CCDF in Spectral Mode
FSW_IQCaptureTime	VSA	IQ Capture time looping Fs
NRP_AvGPwr	NRP	NRP Average power capture
NRP_BufferedContAvg	NRP	Bufferened NRP measurement
SMW_LoadArb.py	VSG	Load Arb file into SMW
OSP_Debug	OSP	Generic OSP example
VSE_ADemod.py	VSE	VSE/FSW Analog FM Demod
VSE_Debug.py	VSE	VSE Raw SCPI
VSE_OFDM_1CC_K96.py	VSE	VSE Single OFDM Carrier EVM w/ K96
VSE_OFDM_MultiCC_K96.py	VSE	VSE Multi OFDM Carrier EVM w/ K96
VST_5GNR_EVM	VSG VSA	SMW/FSW K144 speed tests
VST_5GNR_K144_Read	VSG VSA	SMW/FSW Read 5G NR Parametes
VST_Sweep.py	VSG VSA	SMW/FSW Frequency Sweep
VST_WLAN_EVM	VSG VSA	SMW/FSW 802.11 EVM sweep test

Documentation

Driver 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.

Specific 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
  • Currently 5GNR; LTE; WLAN implemented
• OSP: Open Switch and Control Platform
  • Developed & Tested with OSP120

Instrument Documentation

Driver	Description	User Manual	Models
SMW	Vector Signal Generator	User Manual	SMW; SMBV; SGT; SGS; SMA-B; SMB-B; SMF
FSW	Vector Signal Analyzer	User Manual	FSW; FSWP; FSVA; FPL;
VSE	Vector Analysis Software	User Manual	VSE
CMW	Basestation Emulator	User Manual	CMW500; CMW100; CMP200
NRP	Three Path Power Sensor	User Manual	NRP; NRPM
NRQ	Freq Selective Pwr Sensor	User Manual	NRQ
OSP	Switch Matrix	User Manual	OPS1xx; OPS2xx
VNA	Network Analyzer	User Manual	ZVA; ZNA; ZNB
[N/A]	Digital Oscillocope	User Manual	RTP; RTO;
[N/A]	Radiated Chambers	User Manual	ATS800; ATS1000; ATS1800; CMQ; DST200; TS7124

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

Acknowledgments

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