Abstract: A fluid collection and measurement container includes a first wall and a second wall disposed opposite the first wall. The second wall is secured to the first wall and the first wall and the second wall define an expandable volume therebetween. A first electrolytic element is disposed on the first wall and a second electrolytic element is disposed on the second wall. A first terminal is connected to the first electrolytic element and a second terminal is connected to the second electrolytic element.

Abstract: A performance monitor determines a performance characteristic of a plurality of dispensers receiving fluid from a reservoir. Each of the plurality of dispensers has an actuator that, when actuated, causes the each of the dispensers to generate a droplet of the fluid. A driver generates a drive command to the actuator to adjust a physical attribute of the droplet based on the performance characteristic to satisfy a performance criteria.

Abstract: Disclosed are dual frequency GPS receivers using single frequency sequencing and methods of using the same to track both first global positioning signals at a first frequency and second global positioning signals at a second frequency. Both of the first global positioning signals and the second global positioning signals are received with a multi-frequency antenna or multiple antennas of different frequencies. The first global positioning signals and the second global positioning signals are separated and converted into first and second translated global positioning signals, respectively, having an intermediate frequency or frequencies. Frequency sequencing is controlled to selectively alternately couple the first and second translated global positioning signals one at a time to the channels of the digital signal processor for use in navigation solution determination.