This manual describes the R&S®SMBV-K360, R&S®SMBVB-K360, and R&S®SMW-K360 ERA-GLONASS Test Suite, which are options for the R&S®CMWrun software. These options enable the testing of in-vehicle systems (IVS) for ERA-GLONASS compliance, specifically against GOST 33471 and GOST R 55534 standards. The test suite simulates a global navigation satellite system (GNSS) environment, allowing for comprehensive testing of IVS functionality.
Function Description
The R&S®CMWrun software, with the ERA-GLONASS test suite options, provides a platform for automated testing of in-vehicle systems. It simulates GNSS signals and controls the IVS via SCPI commands or vendor-specific commands on a serial port interface. The system can perform various tests related to GNSS receiver performance, including availability of position/velocity, NMEA transmission verification, functional RAIM (Receiver Autonomous Integrity Monitoring), use of different reference systems, location accuracy (static and moving receiver), minimum update rate of NMEA stream, reacquisition time, time-to-first-fix (TTFF) under cold start conditions, tracking and acquisition sensitivity, change update rate of NMEA stream, check cutoff angle settings for navigation satellites, and checking power-off time of the navigation module.
The test setup typically comprises an R&S SMBV100A or R&S SMBV100B signal generator, a controller PC running R&S CMWrun, and the IVS (GNSS receiver) under test. The signal generator provides GNSS signals to the IVS, and the controller PC manages the test execution and data acquisition. An external attenuator is recommended for signal levels below -120 dBm.
The test suite allows for detailed configuration of test parameters, including GNSS simulation settings, vehicle simulation settings, signal power settings, and advanced settings. It supports both GLONASS and GPS systems for various tests.
Important Technical Specifications
The manual outlines the required equipment for each option:
- Hardware: R&S SMBV100A for GNSS simulation.
- HW option R&S SMBV-B10
- HW option R&S SMBV-B103/-B106
- Minimum required options:
- R&S SMBV-K44, GPS
- R&S SMBV-K91, extension to 12 satellites
- R&S SMBV-K92, GNSS enhanced (motion files, atmospheric effects)
- R&S SMBV-K94, GLONASS
- R&S SMBV-K96, extension to 24 satellites
- Additional options for full test coverage:
- R&S SMBV-K110, SBAS for functional RAIM test (5.5)
- R&S SMBV-K102, antenna pattern and R&S SMBV-K103, spinning and attitude simulation for test location accuracy with moving receiver - test mode poor reception (test cases 5.8 and 5.9)
- Software: R&S CMWrun base software, version 1.8.8 or higher. No smart card and no licenses are required for R&S CMWrun.
- Hardware: R&S SMBV100B for GNSS simulation.
- Minimum required options:
- R&S SMBVB-K520 real-time extension
- R&S SMBVB-K44, GPS
- R&S SMBVB-K94, GLONASS
- Additional option for full test coverage:
- R&S SMBVB-K108, antenna pattern, spinning and attitude simulation for test location accuracy with moving receiver - test mode poor reception (test cases 5.8 and 5.9)
- Software: R&S CMWrun base software, version 1.9.6 or higher. No smart card and no licenses are required for R&S CMWrun.
- Hardware: R&S SMW200A for GNSS simulation.
- HW option R&S SMW-B10
- HW option R&S SMW-B103/-B203
- Minimum required options:
- R&S SMW-K44, GPS
- R&S SMW-K94, GLONASS
- Additional option for full test coverage:
- R&S SMW-K108, antenna pattern, spinning and attitude simulation for test location accuracy with moving receiver - test mode poor reception (test cases 5.8 and 5.9)
- Software: R&S CMWrun base software, version 1.9.5 or higher. No smart card and no licenses are required for R&S CMWrun.
The software version for R&S®CMWrun must be V1.9.10 or higher for these options.
Usage Features
The R&S CMWrun software provides a user-friendly interface for configuring and executing tests.
- Test Plan Management: Users can create, load, and manage test plans, which define the sequence of tests to be performed. Test plans are stored as XML files.
- DUT Configuration: The software allows for detailed configuration of the Device Under Test (DUT), including its attributes and properties. This involves setting up communication parameters (e.g., serial port settings for IVS connection) and defining DUT-related automation methods.
- Test Case Configuration: Individual test cases can be configured with specific parameters such as measurement duration, pseudorange error ramp, number of satellites, visibility intervals, blockage zones, and acquisition/tracking sensitivity settings.
- GNSS Simulation Settings: Users can define almanac and RINEX files, configure atmospheric models (Troposphere and Ionosphere), and set the test procedure (e.g., GOST 33471 or GOST R 55534).
- Vehicle Simulation Settings: The software allows for specifying the geo-position of the IVS, simulating movement, and defining files for movement and visibility masks (e.g., GOSTC2_C3.xtd for "Maximum Velocity/ Manoeuvring" and GOSTC4.xtd for "Blockage/ Poor Reception").
- Signal Power Settings: Users can adjust the received satellite power for GLONASS and GPS, and configure external power attenuation.
- Advanced Settings: The software offers advanced settings to speed up tests or loosen strict conformance limits. These include jitter tolerance, timeout acquisition mode, timeout tracking mode, NMEA format compliance, exclude acceleration interval, GNSS signal logging, ignore coordinate system, GNSS signal logging rate, receiver autonomous integrity monitoring (RAIM) settings, error estimation/restore interval, and sensitivity settings.
- Monitoring: A "GNSS Monitor" subtab provides real-time graphical representation of measured signal characteristics during test execution. This includes views for summary, satellite power, planimetric error, circular error, velocity error, altitude error, and trajectory profile.
- Test Results: The system generates measurement reports containing results for each executed test case, including pass/fail verdicts, thresholds, and units. Errors and warnings are also logged.
Maintenance Features
While the manual primarily focuses on usage and configuration, some aspects touch upon maintenance:
- Software Updates: The requirement for specific R&S CMWrun software versions (V1.8.8, V1.9.5, V1.9.6, or V1.9.10 and higher) implies that regular software updates are part of maintaining the system's functionality and compliance with standards.
- Calibration: For tests like "Tracking and acquisition sensitivity," a precise calibration of the signal path is necessary, indicating a need for periodic calibration of the test equipment.
- Error Logging: The system logs errors and warnings, which can be used for troubleshooting and identifying potential issues with the IVS or the test setup.
- Documentation: The user manual itself serves as a key maintenance tool, providing detailed instructions for setup, configuration, and interpretation of results, which is crucial for effective operation and troubleshooting.
- Support: The contact information for Rohde & Schwarz (phone, email, internet) suggests that technical support is available for maintenance and operational issues.
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