NI-DAQmx assigns names to local virtual channels that you create programmatically with the NI-DAQmx API when you do not provide a name for each local virtual channel.

Physical Channel Names Name To Assign Generated Local Virtual Channel Names
Dev1/ai0:1 — Dev1/ai0, Dev1/ai1
Dev1/ai0:7 "foo" foo0, foo1, ..., foo7
Dev1/ai0:7 "foo31" foo31, foo32, ..., foo38
Dev1/ai0:7 "foo 123" foo123, foo124, ..., foo130
Dev1/ai0:7 "a0:3, b" a0, a1, a2, a3, b0, b1, b2, b3