Rapid-Tech Equipment was started in 1996 by Mike Collins after many years working in senior management in a number of the world’s leading test equipment companies. He believed there was a need for a company that could provide advice & high quality test & measuring equipment to it’s customers at a substantial cost savings.So, when you are in the market to buy test equipment, Rapid-Tech Equipment is your complete test & measurement equipment resource. This website is designed to provide the most-up-to-date technical information, and it is hoped that you our customer will find out everything you need to know without having to look further.
Guildline Instruments 6640G Quantum Hall Resistance (QHR)
Guildline Instruments 6640G Quantum Hall Resistance (QHR) Bridge has been completely redesigned to offer better uncertainties and operate more efficiently.
FEATURES
Patented toroid design
Introducing a new dual-processor design
Fast measurements with dedicated high speed real-time processor
The built-in Windows 10 computer and touchscreen display provide complete measurement results and graphs
Best accuracy: ± 0.015 ppm of reading at qhr currents of 30 µa – 100 µa with interchange
Fast measurement speed of 2 seconds
Modify all key parameters “on-the-fly” while the measurement is running
Linearity: ± 0.005 ppm of full scale
Resolution: ± 0.0001 ppm of full scale
Fully programmable USB, IEEE 488.2
Industry standard SCPI programming command language