You can configure a filter for each bank on the FD-11634.

FieldDAQ supports three types of lowpass filtering:

  • Brickwall (default)
  • Butterworth
  • Comb
Table 12. Comparing FieldDAQ Filters
Attribute Brickwall (Default) Butterworth Comb
Passband Tracks sample rate Configurable independent of sample rate Tracks sample rate
Alias Protection Best—Full protection Better—Configurable protection level Good—Partial protection
Latency High Medium to high (configuration-dependent) Low
Input Delay Variation versus Frequency Constant input delay Variable input delay Constant input delay
Flatness Best Best Good
Step Response (Time Domain) Most delay, ringing (overshoot/undershoot) Mid-level delay, overshoot Short delay, no overshoot/undershoot
Typical Applications

Analyzing dynamic properties of signals

Analyzing spectrum of signals

Filtering out specific noise sources

Analyzing signals in the time domain

Reducing measurement noise

Filtering out specific noise sources

Analyzing signals in the time domain

Control applications

Configurable filtering is supported in NI-DAQmx 18.6 and later. Previous versions of NI-DAQmx support only brickwall filtering. Refer to the FD-11634 Specifications for details on the amount of variation in the response you can expect for different input frequency ranges.

Learn more about FieldDAQ filters.