I think it's funny that you mention that it will only do 6MHz beyond a sine wave...that's better than the Siglent except on the square which is 10MHz, and it isn't the best looking square at that! 6MHz for an arbitrary waveform is actually very good. I can't see how the Siglent has much better specs at all really.
Risetime?
The Siglent SDG 1025 specs I found on the Net list . . .
25MHz; 2 channels; 125MSa/s; wave length: 16Kpts
Here's some of the FeelTech FY3224S Specs from the Ebay Listing . . .
?Built-in arbitrary waveform with 250 MSa/s sampling rate.
?4 downloadable 2048 dots arbitrary waveform memories
?With 12 bit wide waveform generator
?Each function can be adjusted by host computer.
?Preinstalled 14 common waveforms.
?High frequency accuracy: magnitude 10?6
?High resolution: Full range frequency resolution can be 10 mHz.
?Both main and subsidiary wave duty cycle are adjustable separately (0.1%~99.9%?.
?All range continuously adjustable, digital directly setting.
Model
FY3224S
Sine wave frequency range
0Hz~24 MHz
Square wave frequency range
0Hz~6MHz
Triangle wave frequency range
0Hz~6MHz
Arbitrary wave frequency wave
0Hz~6MHz
I pulled the Trigger on this FY3224S DDS AW Function Signal Generator & also a Rigol DS1054Z Scope . . .
Should have the FY3224S within 10-Days & the Rigol Scope by this Wednesday . . .
It's been Years since my Trusty Old TekTronic RM43 35Mhz Tube Scope / 19" Rack Mount has been seen & My old HealthKit 1-100K Sine / Square Wave generator disappeared in an ancient move . . .
Will be kind-of-fun to get a more "Modern" test development electronics bench setup going . . .
This is My 1st Post Here . . . Cheers from Orion12