measure anode luminous sensitivity) VOLTAGE 0 V ON LIGHT LEVEL OFF 5 6 7 8 9 (minutes) 1 µA ANODE I max. OUTPUT Ii I min. OR Ii I max. I min. 5 6 7 8 9 (minutes) WARM-UP PERIOD (5 minutes or more) THBV4_0440EA Figure 4-40: Light hysteresis In light hysteresis test, the photomultiplier tube is operated
