|NI-SCOPE (English | Japanese)|
Short Name: Flex FIR Antialias Filter Type
Property of niScope
The NI 5922 flexible-resolution digitizer uses an onboard FIR lowpass antialias filter. Use this property to select from several types of filters to achieve desired filtering characteristics. For most applications, the default value of this property is recommended. The other available filters are useful for optimizing settling time measurements of step responses. The default value is 48 Tap Standard.
|Note Settling time values refer to the FIR filter only and do not take into account settling time caused by the analog front end. Refer to the NI PXI-5922 Specifications for combined digital and analog settling times.|
|48 Tap Standard (0)||
48 Tap Standard filter is optimized for alias protection and frequency-domain flatness.
|48 Tap Hanning (1)||
48 Tap Hanning filter is optimized for the lowest possible bandwidth for a 48 tap filter and maximizes the SNR.
|16 Tap Hanning (2)||
16 Tap Hanning is optimized for the lowest possible bandwidth for a 16 tap filter and maximizes the SNR.
|8 Tap Hanning (3)||
8 Tap Hanning filter is optimized for the lowest possible bandwidth for a 8 tap filter and maximizes the SNR.
The following table lists the characteristics of this property.