A droplet generator having a bubble purging fluidic architecture comprises a firing chamber ; an inlet fluidically connecting the firing chamber to a fluid reservoir ; and an outlet configured to pass fluid droplets being ejected from the firing chamber. The device may include a fan to dissipate thermal energy generated during the operation of the plurality of graphics processing units. At least one die on one of the substrates is in optical communication with at least one opposing die on the other substrate. The processor is configured to select one of the sets of impedance control values and to serially transmit the selected set of impedance control values during a communication session. A clamping mechanism is positioned on the rake bolt and is configured to apply a clamping force to the upper jacket to secure the upper jacket against telescope movement. The method for controlling the forward link gain includes using the embedded subscriber unit in the power controlled repeater to control the forward link gain.