vspec_tran()
Returns the transient voltage spectrum
Syntax
y = vspec_tran(vPlus, vMinus, fundFreq, numHarm, windowType, windowConst)
Arguments
| Name | Description | Range | Type | Default | Required |
|---|---|---|---|---|---|
| vPlus | voltage at the positive terminal | (-∞, ∞) | real, complex | yes | |
| vMinus | voltage at the negative terminal | (-∞, ∞) | real, complex | yes | |
| fundFreq | fundamental frequency | [0, ∞) | real | yes | |
| numHarm | number of harmonics of fundamental frequency | [0, ∞) | integer | yes | |
| windowType | type of window to be applied to the data | [0, 9]† | integer, string | 0 | no |
| windowConst | window constant | [0, ∞) | integer, real | 0 | no |
| † The window types and their default constants are: 0 = None 1 = Hamming 0.54 2 = Hanning 0.50 3 = Gaussian 0.75 4 = Kaiser 7.865 5 = 8510 6.0 (This is equivalent to the time-to-frequency transformation with normalgate shape setting in the 8510 series network analyzer.) 6 = Blackman 7 = Blackman-Harris 8 = 8510-Minimum 0 9 = 8510-Maximum 13 | |||||
Examples
a = vspec_tran(v1, v2, 1GHz, 8)
Defined in
$HPEESOF_DIR/expressions/ael/circuit_fun.ael
See Also
Notes/Equations
This measurement gives a voltage spectrum across any two nodes. The measurement gives a set of RMS voltages at each frequency. The fundamental frequency determines the portion of the time-domain waveform to be converted to the frequency domain. This is typically one full period corresponding to the lowest frequency in the waveform. The numHarm argument is the number of harmonics of the fundamental frequency to be included in the voltage spectrum.
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