4, signal generator reference clock output function
If you want to make the source complete synchronization is to let the clock synchronization, the purpose of reference clock output is to let the signal source synchronization.
5, Burst function
Is the input of a TTL signal, the signal source can generate a cycle of signal output.
6, frequency meter
In addition to the dial display, whether it is a LED digital tube or LCD liquid crystal display frequency, and the frequency meter circuit is overlapping.