There is no self-test function on the WSDA-Base-101 Analog Base Station to test the analog outputs.
However, each channel can be tested by using whatever wireless node you have.
Using Node Commander software, confirm that any given channel on whatever wirelees node you have is working.
From there, reconfigure the sensor channel with Node Commander so that the output in Node Commander is VOLTS.
Again using Node Commander, direct the sensor output in VOLTS to each of the output channels on the backplane of the analog base station.
Using your DAQ, multi-meter or other analog measurement system, confirm that the analog voltage output matches the digital voltage output as reported by Node Commander.