Quote Originally Posted by dlin View Post
Is the Ushio metal halide bulb a direct replacement for a mercury vapor bulb? Any adjustments required to the circuitry of my unit (Amergraph V28)?

I was actually wondering this as well. I would think the strike current would be lower for metal halide as opposed to mercury vapor. I was also wondering if the spectral output of the metal halide bulb would have an effect on integrator calibration. Not a huge issue since I'd run calibrations again after replacing the bulb, but it would be interesting to know.