I have another unit I'm using on the bench that has 2Mpts waveform output memory for $350 more if you need that.
800MS/s
5Vpp into 50 Ohms, 10Vpp open circuit
2Mpts output memory
Can edit the waveform point by point with oscilloscope monitoring
Can also enter polynomial and transcendental functions for the waveforms
Can record a signal and play back as the arbitrary waveform
Can download and upload waveform through GPIB