The WTViewerFreePlus software captures measured numeric values, harmonic values, and waveform data. Users can view and save data on a PC using USB, GPIB, RS-232, or Ethernet.
You can use WTViewerFreePlus to connect WT300 / WT300E series power meters (hereafter referred to as WT) to a PC and:
As well as using the WT300 / WT300E series front panel to set up the power meter, users can quickly set up preferred conditions. It also shows setting parameters and status at a glance. For instance, you can set up the range-skip function (range-configuation setting) and specify the maximum order for the THD calculation.
The software can display items which cannot be shown on the display of the WT300 / WT300E series, such as multiple numeric measurement parameters, the harmonics data of each other, bar graphs, trend graphs, and voltage & current waveforms.
|Connection:||Communication configuration between WT and PC|
|Setting:||Set up WT measurement parameters|
|Measure:||Display measured results in bar graphs, trend graphs, etc.|
|File:||Save and load setup parameters|
|Exit:||Exit the software|
The following types of display screens are available.
|Measuring Mode||Normal, harmonics, integration|
|Types of Files||Waveform, calculated values, harmonics, settings|
|Display Screens||Numerical, waveform*, trend, harmonic Bar Graph*
* /G5option is required on .
|Data Acquisition Interval||100 ms at max. speed.
- The data storage period can be any custom settings (more than 2 seconds) and the data update rate of the body.
- Depends on your PC's performance.*When the WT data update interval is shorter than the time it takes for the software to collect one set of measured data, there will be pieces of data that the software will not collect.
|PC||CPU||Pentium 4 1.5 GHz or faster recommended|
|Memory||2 GB or more recommended|
|HDD||1 GB free space or more|
|Operating System||English version of Microsoft Windows XP (SP3 or later)1, Windows Vista 1 or Windows 7 2|
|1 32-bit versions are supported.|
|2 32-bit versions and 64-bit versions are supported.|
|Communication Board||GP-IB||NI (National Instruments)|
|PCI-GPIB or PCI-GPIB+1|
|PCIe-GPIB or PCIe-GPIB+1|
|PCMCIA-GPIB or PCMCIA-GPIB+1, 2|
|1 NI-488.2 driver Ver. 1.60 or later (except Ver. 2.3)|
|2 Not supported on Windows Vista or Windows 7|
|3 Use driver NI-488.2M Ver. 2.8.1 or later.|
|RS-232||An available PC COM port|
|Ethernet||An Ethernet port that supports 10BASE-T or 100BASE-TX|
|USB||A USB port that supports USB Revision 1.1 or higher|
|Display, Printer, and Mouse||Screen Resolution||1024×768 dots or higher|
|Operating System||Operating system mentioned above|
|Display||Numeric Data Display||Available|
|Harmonic Bar Display||Available|
|Vector Graph Display Function||N.A.|
|Display||From the PC||Available|
|Types of Files||Conversion to CSV||Available|
|Data Acquisition Interval||100 ms at max. speed.||Available|
The WTViewerFreePlus is a free software including the IM CD.
It can detect connected WT300 series automatically and there are dedicated Setting page and Measurement page separately.
Designing an instrumentation system for high current measurement requires careful consideration of the trade-offs associated with each type of sensing device. The purpose of this application note is to help engineers understand the sensing choices available and the corresponding trade-offs with each technology.
In a research paper published by ISLPED '22: Proceedings of the ACM/IEEE International Symposium on Low Power Electronics and Design, researchers from Loyola University Chicago and Purdue University use a Yokogawa Test&Measurement WT310E Power Meter to measure the energy consumption of the various techniques presented.
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