The new bull's eye detector (S1700201) was placed onto the table where the prototype one was located.
Adjusted the beam using the mirror located in front of the detector.  Between pins 3 and 8 of the DB9,
~ -14V was measured.  Between pins 1 and 6, ~ -26.5V.  Although it was a bit difficult to see with an
IR viewer, the spot on the photodiode looked reasonably well centered.  Powering up the detector caused
the high power shutter to close.  I reset the error condition without any issues.

    Not sure of the exact cause of the signal degradation of the previous detector, as reported by
Sheila, but a cable was close to the beam path.

    To debug some temperature related signals, I placed my hand on/over the temperature sensor closest
to the entrance of the laser room for more than a few seconds.  If I remember what Richard told me,
the signal labelled "north" on the MEDM screens, is in fact the south sensor and vice versa.