User Manual - Rev AJ California Instruments5.7.3 Amplifier BoardsThe Amplifier boards are each attached to a heat sink and stacked on top of each other at thetop portion of the power module enclosure. Sets of two boards are held together by a bracketwhich screws into the back wall of the power module enclosure. Power to each amplifier boardis supplied from the PFC section through a set of DC bus bars. Each amplifier board connectto the modulator board via a small ribbon cable. Each Amplifier board has four outputs (A+. AB+ and B-). These four outputs connect to a set of Inductor boards using stranded wires withAnderson style connectors. The connection between the Amplifier boards and the Inductorboards is specific and should not be reversed or damage could result. The output wireconnectors of eas-,ch amplifier board are color coded to help identify the correct connections. TheConnectorsconnections between the Modulator board and the Amplifier boards are one to one. (line up with amplifier boards).The layout of the Amplifier board is shown in Figure 5-5.Figure 5-5: Amplifier Board LayoutMX Series 153
