Translations:Wiren Board 5:Аппаратная часть/350/en
Версия от 04:08, 15 декабря 2015; EvgenyBoger (обсуждение | вклад) (Новая страница: «Input stage of Ax channel consists of an analogue-to-digital converter ADCx and an input resistor Rx (100kOhm). The ADC has a high input impedance, so it doesn'…»)
Input stage of Ax channel consists of an analogue-to-digital converter ADCx and an input resistor Rx (100kOhm).
The ADC has a high input impedance, so it doesn't affect the channel operation even if the channel works as output.
In input mode the Tx switch is inactive (open) and, thus, does not affect voltage measuring at the channel terminals. Input impedance in input mode is determined by the Rx resistance.
If the channel terminal is left floating, the input voltage measured by ADCs is pulled down to zero by the Rx resistance.