Rigol Dg1000z and SiFi

[Freighternut]

I would be interested to know if SiFi has overcome some the pulse limitations that the DG4000 series has I.E. excessive rise times on short pulses in a long pulse period as per this post:

 https://www.eevblog.com/forum/testgear/rigol-dg4000-arb-gen-as-pulse-generator/msg140689/#msg140689

From pulse specs in the datasheet the spec for rise time suggest that it may still have issues:

Rising/Falling Edge ?10 ns (limited by the current frequency setting and pulse width setting)

Can anybody comment on this?

[cyr]

Below is the rising edge of a 10 us pulse, configured with 10ns rise time, at 1kHz and at 1Hz. Looks OK.

The third one however is at 100mHz, at the "fastest" setting allowed (90ns rise, 100 us width)). Not exactly "high fidelity".... 

DG1032z

And the settings follow that pattern going to longer periods. At 1uHz, the shortest pulse is 10s and the rise time is 9 ms.

[Freighternut]

Thanks CYR!

Excellent information and it looks like the dg1000z would work for me. My requirement is for simulating relatively low frequency (narrow pulse, long period) inputs to  microcontrollers. I don't think that I have a need to go out  1uHZ if I do I will certainly need to add a schmitt trigger between the ARB and the micro input.


I have another question; can the two outputs be synchronized and phase adjusted. My requirement here is to simulate quadrature inputs.

Many thanks again for your excellent reply.

[cyr]

You can adjust the phase for each channel and align them with a button press, and for most waveforms you can set the channels up to track in frequency (not in pulse mode for some reason, but square should work for quadrature).

[rodpp]

Does anyone knows where can I find technical details about the Rigol SiFi technology?