NI 5402/5406/5421/5422/5441/5442
Analog Filter
The analog filter is a lowpass filter that is used to eliminate aliased images and artifacts due to the digital-to-analog conversion from the signal from the DAC. In general, use the analog filter for signals containing a large portion of sinusoidal content, such as AM and FM, sinc pulse, and sinusoidal chirp waveforms. The filter can be bypassed for signals that are better represented without filtering, such as square waves or waveforms containing many pulse characteristics. You can set the enabled state of the analog filter in the Analog Output path. Refer to the niFgen Configure Analog Filter VI or the niFgen_EnableAnalogFilter and niFgen_DisableAnalogFilter functions for more information about setting the analog filter.
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Notes NI recommends that the analog filter and digital filter always be enabled or disabled at the same time.
The analog filter is not available on the NI 5421/5422/5441/5442 when the Direct path is selected. |
The delay from the time the device receives a Start trigger to the time a signal is generated at the analog output increases if the analog filter in the Analog Output path is enabled. Refer to the device specifications for information about the delay from the trigger to the analog output based on the configured filter settings.