National Instruments NI 9403, Руководство по началу работы

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module sets all the DIO channels to high impedance for
approximately 280 ms.
When the channels are in an overcurrent state, the NI 9403 can
accept new line direction configuration and output state data but
cannot pass valid input data to the software.
After the overcurrent protection period, the NI 9403
automatically recovers to the latest direction configuration and
output state. If the overcurrent condition still exists, the module
again sets the channels to high impedance. This cycle continues
until the overcurrent condition is removed.
NI 9403 Getting Started Guide | © National Instruments | 13