Agilent Technologies 3588A Guia do Utilizador descarregar pdf (Página 176)

filtrsdf.mex

Syntax filtersdf (b, a, name, dataNo, rowNo, colNo)

Returns not applicable

This MATLAB subroutine digitally filters SDF data (time capture data).

Caution This MEX-file will modify your SDF file. You may want to make a back up copy of the

SDF file before using this subroutine.

Parameter Definitions

Parameter Definition

b Digital filter coefficients (numerator)

a Digital filter coefficients (denominator)

name name of SDF file to filter

dataNo data result to filter (default = 0, first result)

rowNo row number to filter (default = 0, first row)

colNo column number to filter (default = 0, first column)

All scans in a file are filtered. If the result is a time capture, the filter is cleared only once at the start of

the data. Otherwise, the filter is cleared at the start of each scan.

For a time capture file, dataNo is 0 (captured data is always the first result in the file), rowNo is the

channel number (0 is channel 1, 1 is channel 2), and colNo is always 0. For example, to filter channel 2

of the time capture file ‘TEST.TIM’, specify

filtersdf (b, a, ‘TEST.TIM’, 0, 1);

Note This MEX-file requires the MATLAB Signal Processing Toolbox, because it uses the

‘filter’ function.

MATLAB MEX-Files & M-Files

filtrsdf.mex

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