Physics Signal Channel A Physics Signal Filter Block Physics Signal Channel B Physics Signal Channel C Physics Signal Channel D Physics Signal Channel Qi Physics Signal Channel Qo Slow Signals DC Feedback RTF Signal Receivers Threshold and Offset DACs Interface Controller Charge Low Gain Trigger Charge High Gain Trigger WISP Low Gain Trigger Phonon Low Gain Trigger Phonon High Gain Trigger Front Panel ZIP RTF Main Schematic Diagram Backplane RTF Module Addressing