TANGO
Device Server


Tune measurement
Device Attributes Description

TuneMeasurement Class

Revision: release_1_0_5 - Author: stephle

Scalar Attributes
Attribute name
Data Type
R/W Type
Expert
NuPeakSearchStart: the beginning value for searching the peak value in the FFT that corresponds to the tune measure
DEV_DOUBLE
READ_WRITE
No
NuPeakSearchEnd: the end value for searching the peak value in the FFT that corresponds to the tune measure
DEV_DOUBLE
READ_WRITE
No
Nu
DEV_DOUBLE
READ
No
NuInHigherInterval: sets the interval of the Nu attribute : if false Nu will be in [0, 0.5], if true Nu will be in [0.5, 1].
DEV_BOOLEAN
READ_WRITE
No
NuRaw: the reduced frequency of the FFT maximum searched in the interval [0, 0.5]
DEV_DOUBLE
READ
No
FFTNbPoints
DEV_LONG
READ
No
SkippedFirstSamples: the number of samples that are dropped in the beginning of the src buffer, before computing the FFT
DEV_USHORT
READ_WRITE
No
FFTAveraging: the number of successive FFT taken to compute the averaged FFT
DEV_USHORT
READ_WRITE
No
EstimComputTime: the estimated time needed to get data from the src device and compute a new FFT
DEV_LONG
READ
No
ComputationPeriod: The internal period in millisecond at which new tune measures are produced.
DEV_LONG
READ_WRITE
No
FFTWindowSize: the number of points in the src buffer that are used to compute the FFT
DEV_LONG
READ_WRITE
No





Spectrum Attributes
Attribute name
Data Type
X Data Length
Expert
FFTabs: the abscissa axis of the FFTord attribute
DEV_DOUBLE
131072
No
FFTord: the RMS power spectrum on which nu is searched
DEV_DOUBLE
131072
No






ESRF - Software Engineering Group