Stand-alone Data Acquisition and Flash Memory

Stand-alone Data Acquisition and Flash Memory

For years, DATAQ has offered a number of different flash memory solutions for stand-alone data acquisition. Beginning with standard 2GB max capacity SD-style cards for older DI-710/718 series data loggers, progressing to the 32 GB thumb-style USB drives, included with contemporary DI-2000 and DI-4000 series instruments. With maximum sample rates on the order of 14.4 Read MoreSource: DATAQ…

Version 2.0 VSM software released

We’ve released a new version of software for our 8600 Series VSM system. In addition to numerous improvements for system stability and usability, the 2.0 release features:Source: Lakeshore…

Measurement performance of our new 10-inch VSM — read the app note

For researchers requiring higher applied magnetic fields than our 4- and 7-inch 8600 Series VSMs, we now offer a 10-inch electromagnet version (Model 8610). Providing fields as high as 3.6 T (>36 kOe), it is particularly ideal for characterizing permanent magnet materials, such as rare-earth NdFeB magnets, which typically require large fields to saturate and demagnetize the materials. Source: Lakeshore…

Convert and Combine WinDaq Files in Microsoft Excel Format

Convert and Combine WinDaq Files in Microsoft Excel Format

Getting data into Microsoft Excel format is one of the most common customer requests. Often times customers are dealing with numerous data files, and the prospect of manually converting those files, one-by-one, into .CSV format. Fortunately, the software engineering team here at DATAQ has a solution! In conjunction with the WINDH32.EXE (WinDaq Waveform Browser), the Read More Source: DATAQ…

The irony of the magnet system for Kibble balances—a review

The magnet system is an essential component of the Kibble balance, a device that is used to realize the unit of mass. It is the source of the magnetic flux, and its importance is captured in the geometric factor Bl . Ironically, the Bl factor cancels out and does not appear in the final Kibble equation. Nevertheless, care must be taken to design and build the magnet system because the cancellation is perfect only if the Bl is the same in…

Achievement of 0.005% combined transfer uncertainties in the NIST detector calibration facility

Improvements in a lamp-monochromator-based facility at the National Institute of Standards and Technology (NIST), the Visible near-infrared Spectral Comparator Facility (VisSCF) which is used to calibrate optical detectors for spectral radiant power responsivity from 300 nm to 1100 nm, are described. These changes include extending the VisSCF operational range down to 300 nm from 350 nm, thereby fully covering the ultraviolet-A (UVA) spectral region and partially covering the UVB range. These improvements have lowered the magnitudes of most of the components in the uncertainty budget…

Spectral irradiance scale realization and uncertainty analysis based on a 14 mm diameter WC–C fixed point blackbody from 250 nm to 2500 nm

Spectral irradiance scale in the wavelength range from 250 nm to 2500 nm was realized at National Institute of Metrology on the basis of a large area tungsten carbide–carbon (WC–C) high temperature fixed point blackbody, which is composed of a 14 mm diameter WC–C fixed point cell and a variable temperature blackbody BB3500MP as a furnace. A series of 1000 W FEL tungsten halogen lamps were used as transfer standards. The new spectral irradiance scale was compared with the scale based on a variable-temperature blackbody…

A Meter Display for WinDaq Data Acquisition Software

A Meter Display for WinDaq Data Acquisition Software

The question often arises, “Is there a way to display the actual values in WinDaq?”. While real-time numerical data is displayed in WinDaq data acquisition software along with a real-time graph, some customers might prefer to display date in a larger “meter-style” graphical format. Fortunately, there’s a WinDaq add-on that allows you to do just Read More Source: DATAQ…

Special guests of Lake Shore Cryotronics this week

Visiting us this week in Ohio was Prof. Victorino Franco of the Univ. of Seville (right), shown with Lake Shore’s Brad Dodrill and the book they recently co-edited, “Magnetic Measurement Techniques for Materials Characterization.” Source: Lakeshore…

Differential sampling of AC waveforms based on a programmable Josephson voltage standard using a high-precision sampler

A high-precision sampler, Fluke 8588A multimeter in the sampling mode, was utilised to perform differential sampling of AC waveforms with a programmable Josephson voltage standard. The systematic error on the differential sampling, induced by the inherent voltage-response characteristics and built-in low-pass filter of the sampler, was estimated. Experimental results and numerical simulations revealed that the sampler could be used for reliable differential sampling of AC waveforms at frequencies up to several kilohertz, with an appropriate number of the voltage steps per…