This read-write object sets the fine-grained performance-monitoring collection interval — either 5 or 15 minutes, defaulting to 15 — applied to every PM entity monitored on the Ethernet NTE GE114G Card. Switching this to the 5-minute interval gives admins finer visibility into short-lived error bursts or transient link problems on the Ethernet NTE GE114G Card, at the cost of more frequent polling and storage, and it's distinct from the coarser 1-day and rollover PM bins that this setting does not affect. An admin troubleshooting intermittent errors on the Ethernet NTE GE114G Card might switch this from interval-15min to interval-5min temporarily to capture short spikes that a 15-minute bucket would otherwise average away.