AFG1022 channel 2 is a continues signal only no modulation, burst, or sweep.  AFG3022C has full function on both channels. 2. AFG1022 Phasing of channel 1 and 2 is only available on for Sine wave below 1 MHz.  AFG3022C has phase control on any signal type and frequency. 3. AFG1022 is only able to Burst on channel 1 Sine, Square, Ramp, Pulse, and Arb signal. It cannot Burst any signal under the Noise button.   AFG3022C may burst on any signal type.