LCLS quad QE-002

Water Flow = 1.5 gpm at 110 psi.

Run 1. Power supply didn't regulate to 2 A at the beginning of measurements, so the first 2 measurements are at 0 Amps.   Regulation of EMHP is 0.6 % which is not good enough for the low current measurements.

Run 2.  Checked encoder again and moved it slightly.  

Run 3.   Switched to HP 6011A 0-120 A supply.  Stability at 2 A is   std dev = 3.1567e-4 A

Run 4.  Slightly (< 2 degrees) adjusted encoder again.  

Run 5.  Switched back to using HP 0-120 A supply.