To test if you damaged the channel, you can measure the resistance between any input channel of the FP-AI-111 and common. If it does not read 100 Ohms (within the accuracy of the DMM), you damaged the channel.
Also, the FP-AI-111 has a variable update rate depending upon the input filters. If all
16 channels are set to 500 Hz, the update rate (for all channels) is 290 ms. If all 16
channels are set to 50 Hz, the update rate (for all channels) is 1230 ms. For details on calculating the update rate, please see the FP-AI-111 Operating Instructions.
For module repair, can NI Tech Support for an RMA number.