14533 is specifically designed for application in Shimadzu QP5000 mass spectrometers. The 14533 is a direct "plug-in" replacement electron multiplier for the QP5000 mass spectrometer and is fully compatible with the Shimadzu hardware and software. There are three electrical connections to be made to properly install the AF533. Electrical connections are made via the three pins extending from the base of the multiplier. The positions of the three connection pins, 1) high voltage, 2) shield and 3) signal output, are shown in the diagram opposite. (Ground is connected via the mounting bracket).