Fixed Equalization (User Correction, Playback User Correction)
The properties apply a fixed FIR Finite Impulse Response equalization filter to the time data for the specified Measurent Channel. The filter is defined by its frequency response rather than by its impulse response. The frequency response must be stored in a data register. See About Fixed Equalization for more information.
When the measurement hardware or recorded signal has more than one input channel, choose the appropriate . The equalization settings on the tab apply only for the selected. (For more information, see Measurent Channel in Input Properties).
Select the check box to enable fixed equalization. Clear the check box to turn off fixed equalization.
- Select a register in which the frequency domain data has been saved. This data defines the frequency response of the equalizer. A different register can be used for each channel.
- The usual effect of equalization is to divide the unequalized spectrum by the frequency response in the data register. Select the check box to effectively multiply rather than to divide. This means that if a saved two channel frequency response (Channel 2 / Channel 1) is used to define the equalizer, then either apply it un-inverted to channel 2, or inverted to channel 1. If the adaptive equalizer channel response is used to define the fixed equalizer, it is usually applied to either channel un-inverted.
See Also
Using Fixed Equalization for Two-channel Measurements
Using Fixed and Adaptive Equalization Together
