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Development status:
New development
Information status: Updated
Repository:
http://svn.code.sf.net/p/tango-ds/code/DeviceClasses/BeamDiagnostics/TuneMeasurement
Contact:
Class Description
- Tune measurement device.
- This device computes tune measurement by getting its data from another device attribute (currently BPM or RF), computing a Fast Fourier Transform (FFT) on it with possible averaging, and extracting the maximal value of this FFT inside a predefined interval.
Families: BeamDiagnostics
Key words:
Language: Cpp
Contact:
Class interface
Attributes:
| Name | Description |
|---|---|
| NuPeakSearchStartScalar: DevDouble | — |
| NuPeakSearchEndScalar: DevDouble | — |
| NuScalar: DevDouble | — |
| NuInHigherIntervalScalar: DevBoolean | — |
| NuRawScalar: DevDouble | — |
| FFTNbPointsScalar: DevLong | — |
| SkippedFirstSamplesScalar: DevUShort | — |
| FFTAveragingScalar: DevUShort | — |
| EstimComputTimeScalar: DevLong | — |
| ComputationPeriodScalar: DevLong | — |
| FFTWindowSizeScalar: DevLong | — |
| NuRawMagnitudeScalar: DevDouble | — |
| FFTabsSpectrum: DevDouble | — |
| FFTordSpectrum: DevDouble | — |
| FFTphaseSpectrum: DevDouble | — |
Commands:
| Name | Description |
|---|---|
| StateInput: DevVoid Output: State |
This command gets the device state (stored in its device_state data member) and returns it to the caller. |
| StatusInput: DevVoid Output: DevString |
This command gets the device status (stored in its device_status data member) and returns it to the caller. |
| StartInput: DevVoid Output: DevVoid |
Start the computation of the tune measure |
| StopInput: DevVoid Output: DevVoid |
Stops the computation of the tune measure |
Pipes:
Properties:
| Name | Description |
|---|---|
| SrcDeviceDevString | Device name where the data are read |
| SrcDataAttrNameDevString | Attribute name read on SrcDevice for the data |
| SrcSizeAttrNameDevString | Attribute name to configure the number of samples in SrcDataAttrName |
| SrcSizeWriteEnabledDevBoolean | Tells if this device is allowed to control the SrcSizeAttrName, or if it can only read it |
| SkippedFirstSamplesDevShort | The number of samples that are dropped in the beginning of the data src buffer, before computing the FFT |
| WindowTypeDevString | The type of window applied to the input signal. Must be one of the following : RECTANGULAR, BLACKMAN, EXACT_BLACKMAN, HAMMING, HANN, FLATTOP, BLACKMAN_HARRIS_3, BLACKMAN_HARRIS_4, BLACKMAN_HARRIS_7, LOW_SIDELOBE |
| FFTMinimalNbPointsDevLong | The minimal number of bins in the FFT. Must be a power of 2 (otherwise, rounded to the next power of 2 |
| ComputationPeriodDevLong | The initial internal period in millisecond at which new tune measures are produced |
| AutoStartDevBoolean | if set to `true`, the computation of the tune measure starts automatically when the device is launched |
| FFTWindowSizeDevLong | The number of points in the src buffer that are used to compute the FFT |
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Generated
22 Feb 2018, DS Admin
Updated:
The device class has been updated.
You can see previous version here .
22 Feb 2018, DS Admin
Updated:
The device class has been updated.
You can see previous version here .
20 Apr 2017, Piotr Goryl
Updated:
The device class has been updated.
You can see previous version here .
23 Feb 2017, Piotr Goryl
Created:
The device class has been added to catalogue.
Updated:
The device class has been updated.
You can see previous version here .
22 Feb 2018, DS Admin
Updated:
The device class has been updated.
You can see previous version here .
20 Apr 2017, Piotr Goryl
Updated:
The device class has been updated.
You can see previous version here .
23 Feb 2017, Piotr Goryl
Created:
The device class has been added to catalogue.
Added by:pgoryl2
on:23 Feb 2017, 9:26 a.m.