Table of Contents
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Contents
Step 3-Read FFT Measurements................................................................................. 3-9
Reading a New Measurement ......................................................................... 3-9
LabVIEW Example......................................................................................... 3-12
C Example....................................................................................................... 3-12
Step 4-Control............................................................................................................. 3-13
Using Capture Mode to Acquire Time-Domain Data ................................................... 3-14
Using Engineering Units ............................................................................................... 3-15
Configure Engineering Units .......................................................................... 3-15
Chapter 4
Step 2-Configure the Swept-Sine Analyzer................................................................ 4-3
Configuring Inputs .......................................................................................... 4-3
Configuring the Source ................................................................................... 4-3
LabVIEW Example......................................................................................... 4-4
C Example....................................................................................................... 4-4
Notes on Examples.......................................................................................... 4-4
Step 3-Read Swept-Sine Measurement....................................................................... 4-5
Reading a New Measurement ......................................................................... 4-5
LabVIEW Example......................................................................................... 4-7
C Example....................................................................................................... 4-7
Step 4-Control............................................................................................................. 4-9
LabVIEW Example......................................................................................... 4-10
C Example....................................................................................................... 4-10
Source Mode (NI 4551 Only)........................................................................................ 4-11
Step 2-Configure Source............................................................................................. 4-11
LabVIEW Examples ....................................................................................... 4-13
C Examples ..................................................................................................... 4-14
Step 3-Generate Signal ............................................................................................... 4-14
LabVIEW Example......................................................................................... 4-14
NI-DSA Software User Manual
Setting the Span ................................................................................ 3-7
Configuring the FFT Settings ........................................................... 3-8
Averaging ......................................................................................... 3-8
LabVIEW Example .......................................................................... 3-16
C Example ........................................................................................ 3-16
Configuring Harmonics Measurements (Optional) .......................... 4-4
Configuring Custom Frequencies (Optional) ................................... 4-5
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Table of Contents
