SMPTE target brightness is 12ftL. Start with about 16ftL then as the lamp ages, it will drop through the 12ftL target area and when it gets to 8ftL, replace it.
SMPTE target brightness is 12ftL. Start with about 16ftL then as the lamp ages, it will drop through the 12ftL target area and when it gets to 8ftL, replace it.