O2 voltz

[Bruce Plecan]

For the lack of anything else to do, I hooked the heated O2 up, and was
looking at the voltage drop across a sensor resistor, I been thinking of
using.
  As the heater warmed up, the voltage drop across the resistor changed,
just meaning the heater was drawing less current.
  I had hooked the scope probe across the O2, and cold there was no output,
to be expected, but as it warmed up the output swung toward, .2v.  Just in
atmospheric conditions.  Ok, so then it should go way high in pure O2 right,
nope went a little over .3, and stopped there.
  Did I need to load the sensor?.
  The heater doesn't go to a high enough temperature for the O2 to fully
swing high?.
  Does the engine side need to see a slight amount of pressure to reference
to?.
Grumpy