perception_pipeline limit the rate at which point clouds are sent from Gazebo

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I am looking for a way to only send a point cloud scan of my environment once per second. Is there a way to control this in Gazebo?

From http://docs.ros.org/kinetic/api/movei... I see

max_update_rate: The octomap representation will be updated at rate less than or equal to this value.

But this seems to relate to the octomap; is there a way to reduce the sampling rate from with in Gazebo?

And is max_update_rate to be read as per second? So with a value of 1 does that mean the octomap will be updated no more than once per second?