National-instruments NI 9401 User Manual download pdf (Page 10)

NI 9401 Operating Instructions and Specifications 10 ni.com

Overcurrent Protection

Overcurrent protection on the NI 9401 allows only a specified

amount of current for switching DIO channels or sourcing the

output load. If the NI 9401 goes into an overcurrent state, by

exceeding the specified maximum switching frequency or the

output load, the module power supply begins to drop in voltage

until it completely turns off or the overcurrent condition is

removed. When the module is in this state, it can accept new line

direction configuration and output state data but cannot pass valid

input data to the software. Refer to the Specifications section for

more information about the maximum switching frequency and

output load for each channel.

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National-instruments NI 9401 User Manual Page 10