I wanted to avoid the update of this comment every time after you add a new model and the package generation is independent of the packets per second.

    The HDL-64E S2 can spin at rates ranging from 300 RPM (5 Hz) to 900 RPM (15 Hz). The
    default is 600 RPM (10 Hz). Note that changing the spin rate does not change the data rate
    – the unit will send out the same number of packets (at a rate of 1.3 million data points per
    second) regardless of spin rate. The image resolution will increase or decrease depending on
    rotation speed.

http://www.velodynelidar.com/lidar/products/manual/63-HDL64E%20S2%20Manual_Rev%20D_2011_web.pdf p. 10