--- Monitors and controls the measurement.
--- The device info page.
--- The maintenance page. The configuration parameters from this page are described below.The Noise-Source-Measurement logical device controls the measurement procedure for a noise source calibration using a 'Decimator-Spectrum-Analyzer'. For a measurement the device sets the spectrum analyzer parameters and the signal path. It switches off the noise source for the first measurement and takes one spectrum measurement. Then it switches on the noise source and takes a second spectrum measurement.
The results of the two measurements are saved as csv-files (tables with two columns:frequency and level).
Device window pages
The following table shows which device window pages are available with this individual device type. Tool-bar functions not mentioned here are described at the general description of device windows .
--- Monitors and controls the measurement. --- The device info page. --- The maintenance page. The configuration parameters from this page are described below.Configuration parameters
At the maintenance page of the device window there are a couple of configuration parameters which configure the behaviour of the device.
| parameter | description |
|---|---|
| spectrAnalyzer | The device name of the spectrum analyzer to use for the measurement. Actually only devices of the type 'Decimator-Spectrum-Analyzer' are supported. |
| noiseSrcId | The message ID of the parameter which switches the noise source ON or OFF. |
| directory | The directory where to save the measurement result files containing the spectrum data. May be left empty (files are saved in the home directory of the sat-nms software), relative or absolute (starting with a '/' character). |
Variables defined by this device driver
| name | type | flags | range |
|---|---|---|---|
| info.driver | TEXT | R/O | StringRange R/O |
| info.type | TEXT | R/O | StringRange R/O |
| info.port | TEXT | R/O | StringRange R/O |
| info.frame | TEXT | R/O | StringRange R/O |
| config.noiseSrcId | TEXT | SAVE SETUP | StringRange |
| config.spectrAnalyzer | TEXT | SAVE SETUP | StringRange |
| config.directory | TEXT | SAVE SETUP | StringRange |
| preMeasSwitchId.1 | TEXT | SAVE | StringRange |
| preMeasSwitchId.2 | TEXT | SAVE | StringRange |
| preMeasSwitchId.3 | TEXT | SAVE | StringRange |
| preMeasSwitchId.4 | TEXT | SAVE | StringRange |
| preMeasSwitchVal.1 | TEXT | SAVE | StringRange |
| preMeasSwitchVal.2 | TEXT | SAVE | StringRange |
| preMeasSwitchVal.3 | TEXT | SAVE | StringRange |
| preMeasSwitchVal.4 | TEXT | SAVE | StringRange |
| start | FLOAT | SAVE | DoubleRange (0.000000 .. 0.000000) |
| stop | FLOAT | SAVE | DoubleRange (0.000000 .. 0.000000) |
| rbw | FLOAT | SAVE | DoubleRange (0.000 .. 0.000) |
| vbw | FLOAT | SAVE | DoubleRange (0.000 .. 0.000) |
| avg | INTEGER | SAVE | IntegerRange (1 .. 255) |
| pdfilter | CHOICE | SAVE | EnumRange (VBW AVG) |
| measure | TEXT | NOPRESET | StringRange |
| progress | TEXT | R/O | StringRange R/O |