That video comes up as "not available".
Meanwhile, for PM etc. (and portable) use, the BC Group ESU-2300 looks good (as mentioned before).
But what's your opinion of the approach (measurement technique)* - no internal loads - used by the ESU-2050? It looks a bit pricey, especially considering all the "accessories" you would need - Pearson current transformer(s), a number of precision resistors, footswitch simulator etc. - plus the CQM-2000 (or similar) for testing REM. But it's lightweight, portable and highly accurate.
* If you believe the reports, it - current transformers etc. - is what the major ESU manufacturers use when calibrating their units. Note (by the way) that the ESU-2300 has a current transformer internal to the unit.
DSP? Or DFA? Apparently, "Digital Fast Acquisition" technology digitizes current transformer output signals using a high-speed analogue to digital converter. DFA technology achieves the high level of accuracy associated with modern ESU's, and effectively replaces the Fluke 8920A Wideband Digital Voltmeter previously used by ESU manufacturers (and some lucky biomeds). By the way, I'm sure I'm not the only one who still wonders why Fluke discontinued - and, as far as I am aware, never replaced - the 8920A.
