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Wiren Board 4:Аппаратная часть/en: различия между версиями
Wiren Board 4:Аппаратная часть/en (просмотреть исходный код)
Версия 19:37, 25 августа 2015
, 8 лет назадНет описания правки
Fizikdaos (обсуждение | вклад) |
Fizikdaos (обсуждение | вклад) |
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| Строка 214: | Строка 214: | ||
*Active (closed); 0 is at the channel output. | *Active (closed); 0 is at the channel output. | ||
*Inactive (open), high impedance. Such outputs are called “open collectors”. | *Inactive (open), high impedance. | ||
Such outputs are called “open collectors”. | |||
Input stage of Ax channel consists of an analogue-to-digital converter ADCx and an input resistor Rx. Input resistance of the ADCx is high. It is always ON and does not affect the channel operation as it works in output mode. In input mode the Tx key is inactive (open) and, thus, does not affect voltage measuring at the channel terminals. Input resistance of the channel in input mode is formed by the Rx resistor. If no other circuits are connected to the channel terminals, the resistor downs the input voltage to zero, and the ADCx converter will read 0. | Input stage of Ax channel consists of an analogue-to-digital converter ADCx and an input resistor Rx. Input resistance of the ADCx is high. It is always ON and does not affect the channel operation as it works in output mode. In input mode the Tx key is inactive (open) and, thus, does not affect voltage measuring at the channel terminals. Input resistance of the channel in input mode is formed by the Rx resistor. If no other circuits are connected to the channel terminals, the resistor downs the input voltage to zero, and the ADCx converter will read 0. | ||