The document explains restrictions on setting width and delay on the output channels of a pulse generator. The width and delay must total less than the intended output period minus 75 ns, otherwise the channel will not output pulses at the intended period. If the total exceeds the period, the channel will still output a pulse but not maintain the intended timing. Leaving 75 ns of "dead time" ensures pulses are generated at the intended period. Multiple rates can be achieved by setting one channel's delay to match the period.