Document Type: Example Program
NI Supported: Yes
Publish Date: Sep 6, 2006

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Signal Processing & Analysis

Frequency Response using Swept Sine

7 ratings | 3.71 out of 5

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Filename: 3620.llb
Requirements: View

This test measures frequency response of a filter by sweeping a sine wave from a low frequency to a high frequency. This technique is much slower than one based on DSP techniques and broadband noise excitation.

Experiment: Try to set the sweep rate to 10000 Hz/s and see how it affects the result.

Requirements

Filename: 3620.llb

Software Requirements

Application Software: LabVIEW Full Development System 6.0
Language(s): LabVIEW

7 ratings | 3.71 out of 5

Reader Comments | Submit a comment »

Some flaws
Nice FP design. But: * False case needs a wait statement. (RIght now there is 100% CPU use running idle and a few % during a sweep.) * X-axis map mode does not update unless a sweep is in progress * Big stop button should also work during a sweep.
- Feb 3, 2007

WHAT AN AWESOME creation
OK OK... Who wrote this vi! It is AWESOME and I am trying to get somtheing to work with it! VERY IMPRESSIVE JOB!
- Dave Korpi, Micromeasurements. korpi@starband.net - May 16, 2003

Legal
This example program (this "program") was developed by a National Instruments ("NI") Applications Engineer. Although technical support of this program may be made available by National Instruments, this program may not be completely tested and verified, and NI does not guarantee its quality in any way or that NI will continue to support this program with each new revision of related products and drivers. THIS EXAMPLE PROGRAM IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND AND SUBJECT TO CERTAIN RESTRICTIONS AS MORE SPECIFICALLY SET FORTH IN NI.COM'S TERMS OF USE (http://ni.com/legal/termsofuse/unitedstates/us/).