This read-create object, in seconds, sets how long the histogram will accumulate data before collection automatically stops and p2mpHistStatus transitions to statusCaptured. It lets an admin bound a diagnostic capture to a specific time window rather than running indefinitely. For example, an engineer wanting a snapshot of RF conditions over a single busy hour would set p2mpCollDuration to 3600 seconds and then check p2mpHistStatus afterward to know when the data is ready to read.