Interesting subject so I did look it up:
LiveRC - Reilley Motorsports Blinky Buster ESC tech tool

So what I see is that he had a power supply and a motor inside that box and a zero timing should give a 2A current draw. As many topics here go about setting the motor timing to a certain current on a motor analyser he has a base reading and and extra timing should draw more current.
You can create such a setup by your self.

Why a power supply and no battery?
Easy, a battery will drop in voltage over the time, a PSU will stay constant all day.

In the search I found this:
Yes, I was right, a motor and power supply with which he knows the base amps for a zero timing setting.