RIGOL DG5000 Series - Manual (Page 106)

RIGOL Chapter 5 IQ Modulation Output
User’s Guide for DG5000 5-8
To Set Code Rate
Users can set the transmission rate of the code.
When internal modulation is selected, press Rate and use the numeric keyboard or
knob to modify the value. The available range is from 1 bps to 1 Mbps, and the default
value is 9600 kbps.