Overview
This VI is the NI ELVISmx Instrument Launcher’s Dynamic Signal Analyzer (DSA) for the Mac OS. The DSA computes and displays the RMS averaged power spectrum of a single channel. A variety of windowing and averaging modes can be applied to the signal. It also detects the peak frequency component and estimates the actual frequency and power. This instrument has been adapted from its Windows OS form to work with a Mac OS, and the changes between these versions are explained below.
Hardware Instructions
This VI requires a readable signal and a correctly connected analog channel. This can be done using a myDAQ. Connect your device via USB and select that from the device list in the VI.
Executable Instructions
1. First, you must download the NI-DAQmx for myDAQ driver from this link:https://decibel.ni.com/content/docs/DOC-39065.
2. Download the attached file (Dynamic Signal Analyzer.zip) and save a local copy on your computer.
3. Once inside the folder, navigate to the Dynamic Signal Analyzer.app and double click to open.
4. Choose your device from the drop down list and press run.
Changes from Windows Version
This instrument is the same as its Windows version in all except for two ways: the Print button does not cause any event to happen and the Help button does not launch the full LabVIEW Help window.
Disclaimer
This instrument is posted as an example for myDAQ for Mac OS X. While it is not an officially supported part of the DAQmx for Mac OS software, we have found it to work without issue. If you run into any issues apart from those noted above, please let us know by posting below.