В общем случае:
Any impedance mismatches along the transmission line such as those produced by a wheel load results in reflections that travel back towards the source of the signal in the transmission line. The hybrid circuit 15 directs these reflections to the receiver 21, where they are amplified, and then digitized by the analog to digital converter 24. The converted and sampled data is processed by the field programmable gate array (FPGA) 28.
В частном случае:
Referring now to FIG. 5 a, in an embodiment, there is shown multiple PDS ports 12 a, 12 b, and 12 c. The PDS ports 12 a, 12 b, and 12 c, are connected to the Wheel Analog Front-End (AFE) 501 via corresponding sensor buses. The Wheel AFE is connected to the Wheel Data Converter 503 via the receiver bus, and the Wheel AFE is also connected to the FPGA 28 via the sensor selector bus. The Wheel Data Converter 503 is connected to the FPGA 28 via the sample bus, and the computer 34 via the PLL control bus.
В любом случае эта шина - выход АЦП. Из рис. 5а видно, что она чисто цифровая.
Выборка в контексте АЦП имеет некоторый "аналоговый" оттенок.