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RSS FeedsData Acquisition > Products There is a persistent quandary out there concerning the difference between single-ended and differential analog input configurations. Specifically, many have the impression that analog inputs configured to be single-ended cannot measure negative-going voltages inputs. I’m not sure where or how this rumor got started, but it’s pervasive and has led many Read More
Category Archives: Data Acquisition
Be Mindful of Polarity When Making Thermocouple Measurements
Data Acquisition > Thermocouple A little vigilance will save you a lot of time and aggravation when making thermocouple measurements. A common mistakes people make when using thermocouples to acquire temperature data is to assume that the red wire is positive. I know what you’re thinking, “Isn’t it?” Nope. Contrary to popular belief (and what Read More
What’s All This Sink and Source Current Stuff?
Data Acquisition > Current Anyone who has connected to the digital outputs of data acquisition or data logger systems (for example the digital outputs of our DI-2108 and Starter Kits) has wrestled with sink and source current specs, and they continue to be a topic of confusion for many. When does sink current matter, and Read More
Event Versus Analog Data Acquisition
Data Acquisition > Event, State, Count Customers always know what problem they need to solve. Often don’t know how to find the best solution, which sometimes leads to cramming square pegs into round holes. A recurring example is the attempt to use an analog data logger to record counts or times of an electromechanical process. Read More
What’s the Difference between Data Loggers and Data Acquisition?
Data Acquisition > Products or Data Logger > Products In two words: Not much. But it was not always so. There was a time not long ago when significant differences existed between these two basic system types. Consider the following typical data logger features versus its data acquisition cousin: Data loggers were battery powered. Data Read More
Use the EL-DataPad to Configure your EL-USB Temperature/Humidity Logger and Review Data
Data Logger > Lascar > EL-USB Series The size of a deck of playing cards, with an LCD touch-screen, the EL-DataPad allows you to configure your EL-USB temperature/humidity data logger and review recorded data, without the need for a PC. Simply plug your EL-USB data logger into the built in USB port and follow through Read More
Synchronized Data Acquisition Options
Data Acquisition > Ethernet > Distributed Synchronous Sometimes you need to acquire data from several different locations that are separated far enough from each other that they cannot be acquired by a single, multichannel system. This defines the need to synchronize readings from two or more data gathering systems. In situations like that, how you Read More
Run WinDaq and Begin Recording on Windows Startup
Data Acquisition > Software > WinDaq A new application, currently for use with DI-718 and DI-730 Ethernet products, allows you to run WinDaq and begin recording on Windows start-up. The application, titled LaunchWinDaq, lets you “set it and forget it”. After following through a short procedure to save your default conditions (calibration, scaling, annotation, etc.), Read More
What’s an Instrument Protocol?
Data Acquisition > Software DATAQ Instruments has announced via its Twitter, RSS, and Facebook feeds that a preliminary version of the protocol for the soon-to-be-released DI-149 starter kit is now available for download and review. So, what’s a protocol? First, let’s separate those who need to read further from those who don’t. If you will Read More
How To Maximize RPM Measurement Resolution
Data Logger > Graphtec > GL820 A Graphtec GL820 data logger user could not understand why the resolution of the instrument was not better than 60 RPM. He connected the output of a reflective tape sensor to a discrete input programmed for REVOL, which applies an automatic scaling operation as follows: Clearly from the above Read More